Spring Cloud Alibaba微服务从入门到进阶

分手后的思念是犯贱 2023-02-27 08:29 23阅读 0赞

[别人的学习笔记：SpringCloud Alibaba微服务实战][SpringCloud Alibaba]

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SpringCloud：是一个开发分布式应用的工具集，提供了若干多的工具  
SpringCloud Alibaba :是一个一站式的微服务开发解决方案，遵循了Cloud的标准

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课程链接:  
[Spring Cloud Alibaba微服务从入门到进阶][Spring Cloud Alibaba]

[手记][Link 1]

# 第1章 课程介绍 #

## 1-1 本课导学 ##

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## 1-2 项目环境搭建 ##

### maven配置阿里云仓库 ###

打开maven的pom.xml文件  
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配置从阿里云下载依赖  
https://help.aliyun.com/document\_detail/131465.html?spm=5176.10695662.1996646101.searchclickresult.94a21b68rDNcab

*  maven配置指南  
    打开maven的配置文件(windows机器一般在maven安装目录的conf/settings.xml)，在标签中添加mirror子节点:

<mirror>
        <id>aliyunmaven</id>
        <mirrorOf>*</mirrorOf>
        <name>阿里云公共仓库</name>
        <url>https://maven.aliyun.com/repository/public</url>
    </mirror>

<mirror>
        <id>aliyunmaven</id>
        <mirrorOf>central</mirrorOf>
        <name>阿里云公共仓库</name>
        <url>https://maven.aliyun.com/repository/public</url>
    </mirror>

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# 第2章 Spring Boot基础 #

2-1 本章概述 (01:10)

# 2-2 Spring Boot是什么，能做什么？ #

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## 2-3 编写第一个Spring Boot应用 ##

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启动是先mvn clean install 确保所有的jar都下载ok,防止启动运行的时候报错  
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## 2-4 Spring Boot应用组成分析 ##

pom.xml  
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## 2-5 Spring Boot开发三板斧 ##

![在这里插入图片描述][20200716220348941.png]

## 2-6 必会：Spring Boot Actuator 监控 ##

[Spring Boot 监控: Actuator ][Spring Boot _ Actuator]

## 2-7 必会：Spring Boot配置管理 ##

两种配文件：

1.  application.yml
2.  application.properties

2-8 必会：Profile (07:34)  
2-9 本章总结 (00:59)

# 第3章 微服务的拆分与编写 #

3-1 本章概述 (01:34)

## 3-2 单体应用 ##

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单体架构的缺点  
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## 3-3 微服务 ##

一个复杂的系统拆分成若干的小型的应用，这些小型应用通过协作共同构建成这个系统，这每个小型的应用就是微服务  
小型应用（微服务）之间可以通过restfulApi或者消息队列通信  
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3-4 项目效果演示 (05:30)  
3-5 微服务拆分  
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## 3-6 项目架构图 ##

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## 3-7 数据库设计 ##

**数据库数据建模**

[5款非常好用的免费数据库建模工具（免费）][5]  
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## 3-8 API文档 ##

[API文档 ][API_]

3-9 如何创建小程序 (02:28)  
3-10 前端代码如何使用 (05:17)

## 3-11 创建项目-1 ##

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包结构  
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### mybatis通用Mapper ###

[github地址][github]

[1.3 和 Spring Boot 集成][1.3 _ Spring Boot]  
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3-12 创建项目-2 (15:37)

## 3-13 整合Lombok简化代码编写 ##

### @Builder ###

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## 3-14 解决IDEA的红色警告 ##

[Intellij IDEA中Mybatis Mapper自动注入警告的6种解决方案][Intellij IDEA_Mybatis Mapper_6]  
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## 3-15 编写用户微服务与内容微服务-1 ##

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架构师的必备技能： UML（画图工具）  
![在这里插入图片描述][20200721205333334.png]  
**两种项目开发流程：**  
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3-16 编写用户微服务与内容微服务-2 (10:51)  
3-17 编写用户微服务与内容微服务-3 (11:52)  
3-18 现有架构存在的问题 (02:07)

# 第4章 Spring Cloud Alibaba介绍 #

## 4-1 Spring Cloud Alibaba是什么 ##

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4-2 版本与兼容性 (15:16)

SpringCloud 版本发布规划  
[SpringCloud Alibaba 版本与springaboot版本][SpringCloud Alibaba _springaboot]

spring-boot版本说明  
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Spring Cloud 版本说明  
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伦敦地铁名：

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SpringCloud 生产环境版本选择：  
![在这里插入图片描述][20200722201240882.png]  
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## 4-3 为项目整合Spring Cloud Alibaba ##

<dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Greenwich.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>0.9.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>

[spring-cloud-alibaba版本说明,依赖管理][spring-cloud-alibaba]

# a第5章 服务发现-Nacos #

5-1 服务提供者与服务消费者 (01:34)

## 5-2 大白话剖析服务发现原理 ##

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## 5-3 什么是Nacos ##

Nacos 致力于帮助您发现、配置和管理微服务。Nacos 提供了一组简单易用的特性集，帮助您快速实现动态服务发现、服务配置、服务元数据及流量管理。

Nacos 帮助您更敏捷和容易地构建、交付和管理微服务平台。 Nacos 是构建以“服务”为中心的现代应用架构 (例如微服务范式、云原生范式) 的服务基础设施。

服务（Service）是 Nacos 世界的一等公民。Nacos 支持几乎所有主流类型的“服务”的发现、配置和管理：

Kubernetes Service

gRPC & Dubbo RPC Service

Spring Cloud RESTful Service  
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## 5-4 搭建Nacos Server ##

[Github][]  
如何确定nacos的版本和springCloudAlibaba对应版本  
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[nacose官方参考文档][nacose]  
参考官方文档快速安装  
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安装好使用浏览器打开  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 54]  
进入nacse的管理控制台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 55]

## 5-5 将应用注册到Nacos ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 56]

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 57]

spring:
      cloud:
        nacos:
          discovery:
            # 指定nacos server的地址
            server-addr: 10.139.12.149:8848
            cluster-name: BJ

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 58]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 59]

@Slf4j
    @RestController
    public class TestController { 
        @Autowired
        private DiscoveryClient discoveryClient;
    
        /** * 测试：服务发现，证明内容中心总能找到用户中心 * * @return 用户中心所有实例的地址信息 */
        @GetMapping("test2")
        public List<ServiceInstance> getInstances() { 
            // 查询指定服务的所有实例的
            return this.discoveryClient.getInstances("center1");
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 60]

5-6 为内容中心引入服务发现 (05:06)

## 5-7 Nacos服务发现的领域模型 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 61]

*  命名空间  
    用于进行租户粒度的配置隔离。不同的命名空间下，可以存在相同的 Group 或 Data ID 的配置。Namespace 的常用场景之一是不同环境的配置的区分隔离，例如开发测试环境和生产环境的资源（如配置、服务）隔离等。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 62]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 63]  
    ![在这里插入图片描述][20200726102252307.png]

## 5-8 Nacos元数据 ##

**元信息**  
Nacos数据（如配置和服务）描述信息，如服务版本、权重、容灾策略、负载均衡策略、鉴权配置、各种自定义标签 (label)，从作用范围来看，分为服务级别的元信息、集群的元信息及实例的元信息。

*  可以下nacos控制太编辑元数据  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 64]
 *  也可以在配置文件中编辑元数据  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 65]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 66]

# 第6章 实现负载均衡-Ribbon #

## 6-1 负载均衡的两种方式 ##

1.  服务器端负载均衡 （单体项目模式）  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 67]  
    2.客户端测负载均衡  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 68]

## 6-2 手写一个客户端侧负载均衡器 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 69]

## 6-3 使用Ribbon实现负载均衡 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 70]

### SpringBoot整合Ribbon ###

1.  依赖  
    **libaba-nacos-discovery已经包含了Ribbon的依赖**
2.  注解  
    @LoadBalanced  
    在Spring Cloud中服务的发现与消费一文中首先使用了RestTemplate并且开启了客户端负载均衡功能，开启负载均衡很简单，只需要在RestTemplate的bean上再添加一个@LoadBalanced注解即可

服务消费端(客户端) 服务名cloud1 端口号8081

@SpringBootApplication
    @EnableFeignClients// (defaultConfiguration = GlobalFeignConfiguration.class)
    public class ContentCenterApplication { 
    
        public static void main(String[] args) { 
            SpringApplication.run(ContentCenterApplication.class, args);
        }
    
        // 在spring容器中，创建一个对象，类型RestTemplate；名称/ID是：restTemplate
        // <bean id="restTemplate" class="xxx.RestTemplate"/>
        @Bean
        @LoadBalanced
        public RestTemplate restTemplate() { 
            return  new RestTemplate();
        }
    }

@Slf4j
    @RestController
    @RequiredArgsConstructor(onConstructor = @__(@Autowired))
    public class TestController { 
        @GetMapping("cloud1/ribbon")
        public String getRibbon() { 
           String result = this.restTemplate.getForObject("http://cloud2/test/ribbon",String.class);
            System.out.println(result);
            return result;
        }
        }

没有配置

服务提供端代码

服务提供端1 服务名cloud2 端口号8082

@Slf4j
    @RestController
    public class TestController { 
        @GetMapping("test/ribbon")
        public String getRibbon() { 
            return "test/ribbon/8082";
        }
        }

服务提供端2 服务名cloud2 端口号8083

@Slf4j
    @RestController
    public class TestController { 
        @GetMapping("test/ribbon")
        public String getRibbon() { 
            return "test/ribbon/8083";
        }
        }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 71]

## 6-4 Ribbon组成 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 72]

## 6-5 Ribbon内置的负载均衡规则 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 73]

6-6 细粒度配置自定义01-Java代码方式

6-7 细粒度配置自定义02-父子上下文 (04:46)

## 6-8 细粒度配置自定义03-配置属性方式 ##

applicattion.yml

#user-center:
    # ribbon:
    # NFLoadBalancerRuleClassName: com.netflix.loadbalancer.RandomRule

6-9 细粒度配置自定义04-两种方式对比 (01:45)

## 6-10 细粒度配置自定义05-最佳实践总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 74]

6-11 全局配置 (01:30)

## 6-12 支持的配置项 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 75]

## 6-13 饥饿加载 ##

ribbon:
      eager-load:
        enabled: true
        clients: user-center,user2-center,user3-center

## 6-14 扩展Ribbon-支持Nacos权重 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 76]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 77]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 78]**可以打性能好的实例机器权重设定大一点，差的机器设的小一点**

## 6-15 扩展Ribbon-同一集群优先调用 ##

同一集群优先调用是指：  
服务B 在北京和南京机房都有部署，服务A部署在南京机房。  
当服务A调用服务B时，优先调用南京机房的服务B，当南京机房不存在可用的服务B时，服务A才会调用北京机房的服务B  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 79]

6-16 扩展Ribbon-基于元数据的版本控制 (02:36)  
6-17 深入理解Nacos的Namespace (02:51)  
6-18 现有架构存在的问题 (02:48)

# 第7章 声明式HTTP客户端-Feign #

## 7-1 使用Feign实现远程HTTP调用 ##

1.加依赖

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>

2.启动类加注解

@EnableFeignClients

![在这里插入图片描述][20200803193230167.png]

写代码  
![在这里插入图片描述][2020080319420426.png]

@FeignClient(name = "user-center")
    public interface UserCenterFeignClient { 
        /** * http://user-center/users/{id} * * @param id * @return */
        @GetMapping("/users/{id}")
        UserDTO findById(@PathVariable Integer id);
    }

**Feign也实现了负载均衡，Feign的负载均衡也主要是通过Ribbon实现的**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 80]

## 7-3 细粒度配置自定义-01-Java代码方式-指定日志级别 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 81]

## 7-4 细粒度配置自定义-02-配置属性方式-指定日志级别 ##

服务端：服务提供端

@GetMapping("test/ribbon")
        public String getRibbon() { 
            return "test/ribbon/8082";
        }

客户端：服务访问端

yml

feign:
        config:
        #想要调用微服务的名称
         user-center:
            loggerLevel: full

7-5 全局配置-01-Java代码方式-指定日志级别

## 7-6 全局配置-02-配置属性方式-指定日志级别 ##

feign:
      client:
        config:
          # 全局配置
          default:
            loggerLevel: full

日志生效的前提是 SpringBooot 的日志打印级别为debug  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 82]

logging:
      level:
        com:
          example:
            cloud1:
              util:
                Cloud1FeignClient: debug

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 83]

## 7-7 支持的配置项 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 84]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 85]

## 7-8 配置最佳实践总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 86]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 87]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 88]

## 7-9 Feign的继承 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 89]

## 7-10 多参数请求构造 ##

[如何使用Feign构造多参数的请求][Feign]

## 7-11 Feign脱离Ribbon使用 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 90]  
// 脱离ribbon的使用, 调用任意url

@FeignClient(name = "baidu", url = "http://www.baidu.com")
    public interface TestBaiduFeignClient { 
        @GetMapping("")
        String index();
    }

## 7-12 RestTemplate vs Feign ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 91]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 92]

## 7-13 Feign性能优化 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 93]

**为openfeign添加连接池**  
1.加依赖 pom

<dependency>
                <groupId>io.github.openfeign</groupId>
                <artifactId>feign-httpclient</artifactId>
            </dependency>

2.写配置 yml  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 94]

feign:
      client:
        config:
          # 全局配置
          default:
            loggerLevel: full
            requestInterceptors:
              - com.itmuch.contentcenter.feignclient.interceptor.TokenRelayRequestIntecepor
      httpclient:
        # 让feign使用apache httpclient做请求；而不是默认的urlconnection
        enabled: true
        # feign的最大连接数
        max-connections: 200
        # feign单个路径的最大连接数
        max-connections-per-route: 50

## 7-14 常见问题总结 ##

[Feign常见问题总结][Feign 1]

## 7-15 现有架构总结 ##

## 第8章 服务容错-Sentinel ##

## 8-1 雪崩效应 ##

**A不可用导致B不可用，B不可用导致C/D不可以用，即为雪崩效应（也叫级联失效/级联故障）**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 95]

## 8-2 常见容错方案 ##

1.  超时 设置请求超时时间，超出限制时间，则释放请求线程
2.  限流 B服务的一个实例最大QBS为1000，为设置这个实例的允许请求QBS上线为800，当请求QBS超过800时则，再有请求流量过来则直接拒绝
3.  舱壁模式  
    莫一个船舱进水，其他船舱也不会受影响  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 96]  
    每个controller 通过线程池这个钢板隔开，互不影响，每个controller 崩溃不影响另一个  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 97]
4.  断路器 监控+开关  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 98]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 99]

\#\#8-3 SpringBoot整合 Sentinel实现容错

Sentinel是支持轻量级的流量控制、熔断降级的java库  
1.加依赖

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
            </dependency>

没有注解/没有配置，只要加上sentinel的依赖应用就整合好了sentinel

## 8-4 Sentinel控制台 ##

[下载Sentinel控制台][Sentinel]  
**注意：生产环境中Sentinel控制台 的版本最好和依赖的版本相同**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 100]

启动sentinel

nohup java -jar sentinel-dashboard-1.6.2.jar --server.port=8980 &

打开浏览器登录

http://10.139.12.149:8980/

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 101]  
服务提供端 整合sentinel  
只需要添加 yml 配置即可  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 102]

spring:
      cloud:
        nacos:
          discovery:
            # 指定nacos server的地址
            server-addr: localhost:8848
            cluster-name: BJ
            # namespace: 56116141-d837-4d15-8842-94e153bb6cfb
        sentinel:
          filter:
            # 打开/关闭掉对Spring MVC端点的保护
            enabled: true
          transport:
            # 指定sentinel 控制台的地址
            dashboard: localhost:8080

启动：![在这里插入图片描述][20200804202224257.png]

**sentinel 也是懒加载**

需要先访问一次  
再刷新sentinel 控制台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 103]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 104]

## 8-5 流控规则 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 105]

**QPS: 每秒的查询率**

## 8-6 降级规则详解 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 106]

**RT 和 异常比例统计时以秒为单位，异常数以分钟为单位**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 107]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 108]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 109]

## 8-7 热点规则详解 ##

@GetMapping("test-hot")
        @SentinelResource("hot")
        public String testHot(
            @RequestParam(required = false) String a,
            @RequestParam(required = false) String b
        ) { 
            return a + " " + b;
        }

## 8-8 系统规则详解 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 110]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 111]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 112]

8-9 授权规则详解 (01:06)  
8-10 代码配置规则 (03:15)  
8-11 Sentinel与控制台通信原理剖析 (03:26)  
8-12 控制台相关配置项 (01:38)  
8-13 Sentinel API详解 (13:13)  
8-14 SentinelResource注解详解 (08:40)

## 8-15 RestTemplate整合Sentinel ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 113]

@SpringBootApplication
    @EnableFeignClients// (defaultConfiguration = GlobalFeignConfiguration.class)
    public class ContentCenterApplication { 
    
        public static void main(String[] args) { 
            SpringApplication.run(ContentCenterApplication.class, args);
        }
    
        // 在spring容器中，创建一个对象，类型RestTemplate；名称/ID是：restTemplate
        // <bean id="restTemplate" class="xxx.RestTemplate"/>
        @Bean
        @LoadBalanced
        @SentinelRestTemplate
        public RestTemplate restTemplate() { 
            RestTemplate template = new RestTemplate();
            template.setInterceptors(
                Collections.singletonList(
                    new TestRestTemplateTokenRelayInterceptor()
                )
            );
            return template;
        }
    }

@Autowired
        private RestTemplate restTemplate;
    
        @GetMapping("/test-rest-template-sentinel/{userId}")
        public UserDTO test(@PathVariable Integer userId) { 
            return this.restTemplate
                .getForObject(
                    "http://user-center/users/{userId}",
                    UserDTO.class, userId);
        }

可以在调试时避免干扰关掉

resttemplate:
      sentinel:
        # 设置成false，表示关闭@SentinelRestTemplate注解
        enabled: false

## 8-16 Feign整合Sentinel ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 114]

feign:
      sentinel:
        # 为feign整合sentinel
        enabled: true

*  fallback

@FeignClient(name = "cloud2", fallback = Cloud1FeignClientFallback.class)
    public interface Cloud1FeignClient { 
    
        /** * http://cloud2/test/ribbon} */
        @GetMapping("/test/ribbon")
        String getRibbon();
    
    }

@Component
    public class Cloud1FeignClientFallback implements Cloud1FeignClient { 
    
        @Override
        public String getRibbon() { 
            return "Feign流控/降级处理方法";
        }
    }

捕获连接失败的异常信息

fallbackFactory 比fallback 强大，fallbackFactory 可以捕获异常

@FeignClient(name = "user-center",
     // fallback = UserCenterFeignClientFallback.class,
        fallbackFactory = UserCenterFeignClientFallbackFactory.class
    )
    public interface UserCenterFeignClient { 
        /** * http://user-center/users/{id} * * @param id * @return */
        @GetMapping("/users/{id}")
        UserDTO findById(@PathVariable Integer id);
    }

@Component
    @Slf4j
    public class UserCenterFeignClientFallbackFactory implements FallbackFactory<UserCenterFeignClient> { 
        @Override
        public UserCenterFeignClient create(Throwable cause) { 
            return new UserCenterFeignClient() { 
                @Override
                public UserDTO findById(Integer id) { 
                    log.warn("远程调用被限流/降级了", cause);
                    UserDTO userDTO = new UserDTO();
                    userDTO.setWxNickname("流控/降级返回的用户");
                    return userDTO;
                }
            };
        }
    }

## 8-17 Sentinel使用姿势总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 115]

## 8-18 规则持久化01-拉模式 ##

不做持久化，每次重启微服务，之前设置在sentinel的规则就没有了

[Alibaba Sentinel规则持久化-推模式-手把手教程【基于Nacos】][Alibaba Sentinel_-_-_Nacos]

8-19 规则持久化02-推模式 (08:26)

## 8-20 生产环境使用Sentinel ##

8-21 集群流控 (04:36)  
8-22 扩展Sentinel01-错误页优化 (09:15)  
8-23 扩展Sentinel02-实现区分来源 (05:35)  
8-24 扩展Sentinel03-RESTful URL支持 (04:32)  
8-25 扩展Sentinel04-透过现象看本质 (03:57)  
8-26 配置项总结 (01:51)  
8-27 本章总结：再谈常见容错方案 (03:23)

# 第9章 消息驱动的微服务-Spring Cloud Alibaba RocketMQ #

## 9-1 Spring实现异步的方法 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 116]

## 9-2 引入MQ后的架构演进 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 117]

## 9-3 MQ适用场景 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 118]

## 9-4 MQ的选择 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 119]  
[常用MQ产品的对比][MQ]

## 9-5 搭建RocketMQ ##

[RocketMQ 4.5.1安装教程][RocketMQ 4.5.1]

## 9-6 搭建RocketMQ控制台 ##

[RocketMQ控制台安装教程][RocketMQ]

## 9-7 RocketMQ的术语与概念 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 120]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 121]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 122]

## 9-8 RocketMQ进阶 ##

[Apache RocketMQ开发者指南][Apache RocketMQ]

## 9-9 Spring消息编程模型01-编写生产者 ##

1.  加依赖

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
                 <version>4.5.1</version>
            </dependency>

1.  没有注解
2.  写配置 yml  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 123]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 124]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70 125]

@RequiredArgsConstructor(onConstructor = @__(@Autowired))
    public class ShareService { 
    
        private final RocketMQTemplate rocketMQTemplate;
        private final RocketmqTransactionLogMapper rocketmqTransactionLogMapper;
    
    
        @Transactional(rollbackFor = Exception.class)
        public void auditByIdWithRocketMqLog(Integer id, ShareAuditDTO auditDTO, String transactionId) { 
            this.auditByIdInDB(id, auditDTO);
    
            this.rocketmqTransactionLogMapper.insertSelective(
                RocketmqTransactionLog.builder()
                    .transactionId(transactionId)
                    .log("审核分享...")
                    .build()
            );
        }
        }

## 9-10 Spring消息编程模型02-编写消费者 ##

[Spring Boot Messaging][]

@RocketMQTransactionListener(txProducerGroup = "tx-add-bonus-group")
    @RequiredArgsConstructor(onConstructor = @__(@Autowired))
    public class AddBonusTransactionListener implements RocketMQLocalTransactionListener { 
        private final ShareService shareService;
        private final RocketmqTransactionLogMapper rocketmqTransactionLogMapper;
    
        @Override
        public RocketMQLocalTransactionState checkLocalTransaction(Message msg) { 
            MessageHeaders headers = msg.getHeaders();
            String transactionId = (String) headers.get(RocketMQHeaders.TRANSACTION_ID);
    
            // select * from xxx where transaction_id = xxx
            RocketmqTransactionLog transactionLog = this.rocketmqTransactionLogMapper.selectOne(
                RocketmqTransactionLog.builder()
                    .transactionId(transactionId)
                    .build()
            );
            if (transactionLog != null) { 
                return RocketMQLocalTransactionState.COMMIT;
            }
            return RocketMQLocalTransactionState.ROLLBACK;
        }
    }

9-11 分布式事务01-流程剖析、概念术语、事务消息三状态 (05:37)  
9-12 分布式事务02-编码实现 (18:54)  
9-13 Spring Cloud Stream是什么？ (01:28)  
9-14 Spring Cloud Stream编程模型 (02:04)  
9-15 Spring Cloud Stream-编写生产者 (04:53)  
9-16 Spring Cloud Stream-编写消费者 (04:02)  
9-17 Spring Cloud Stream自定义接口01-发送消息【附带解决Mybatis的坑】 (04:19)  
9-18 Spring Cloud Stream自定义接口02-消费消息 (03:46)  
9-19 透过现象看本质 (02:21)  
9-20 消息过滤 (02:02)  
9-21 Spring Cloud Stream的监控 (03:05)  
9-22 Spring Cloud Stream异常处理 (02:53)  
9-23 Spring Cloud Stream + RocketMQ实现分布式事务01-重构生产者 (10:38)  
9-24 Spring Cloud Stream + RocketMQ实现分布式事务02-重构消费者 (05:51)  
9-25 Spring Cloud Stream知识盘点【必看】 (01:47)

# 第10章 API网关-Spring Cloud Gateway #

## 10-1 为什么要使用网关？ ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 1]

## 10-2 Spring Cloud Gateway是什么？优缺点分析 ##

## 10-3 编写Spring Cloud Gateway ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 5]

*  加依赖

<dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-gateway</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>

*  改配置  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 6]  
    打开浏览器

http://localhost:8040/cloud2/test/ribbon

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 7]

被调用服务

server:
      port: 8082
      application:
        name: cloud2
        
    spring:
      cloud:
        nacos:
          discovery:
            server-addr: 10.139.12.149:8848

@GetMapping("test/ribbon")
        public String getRibbon() { 
            System.out.println("test/ribbon/8083");
            return "test/ribbon/8082";
        }

## 10-4 核心概念 ##

## 10-5 架构剖析 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 10]

## 10-6 内置路由谓词工厂详解（Route Predicate Factories） ##

[Spring Cloud Gateway-路由谓词工厂详解（Route Predicate Factories）][Spring Cloud Gateway-_Route Predicate Factories]

## 10-7 自定义路由谓词工厂 ##

**类名必须以RoutePredicateFactory结尾**

@Component
    public class TimeBetweenRoutePredicateFactory
        extends AbstractRoutePredicateFactory<TimeBeweenConfig> { 
        public TimeBetweenRoutePredicateFactory() { 
            super(TimeBeweenConfig.class);
        }
    
        @Override
        public Predicate<ServerWebExchange> apply(TimeBeweenConfig config) { 
            LocalTime start = config.getStart();
            LocalTime end = config.getEnd();
            return exchange -> { 
                LocalTime now = LocalTime.now();
                return now.isAfter(start) && now.isBefore(end);
            };
        }
    
        @Override
        public List<String> shortcutFieldOrder() { 
            return Arrays.asList("start", "end");
        }
    
        public static void main(String[] args) { 
            DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT);
            System.out.println(formatter.format(LocalTime.now()));
        }
    }

@Data
    public class TimeBeweenConfig { 
        private LocalTime start;
        private LocalTime end;
    }

修改配置  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 11]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 12]

## 10-8 内置过滤器工厂详解（GatewayFilter Factories）【详解&调试技巧】 ##

[Spring Cloud Gateway-过滤器工厂详解（GatewayFilter Factories）][Spring Cloud Gateway-_GatewayFilter Factories]

## 10-9 自定义过滤器工厂【生命周期、自定义的方式、核心API、编码】 ##

@Slf4j
    @Component
    public class PreLogGatewayFilterFactory
        extends AbstractNameValueGatewayFilterFactory { 
        @Override
        public GatewayFilter apply(NameValueConfig config) { 
            return ((exchange, chain) -> { 
                log.info("请求进来了...{},{}", config.getName(), config.getValue());
                ServerHttpRequest modifiedRequest = exchange.getRequest()
                    .mutate()
                    .build();
                ServerWebExchange modifiedExchange = exchange.mutate()
                    .request(modifiedRequest)
                    .build();
    
                return chain.filter(modifiedExchange);
            });
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 18]

## 10-10 全局过滤器 ##

[Spring Cloud Gateway-全局过滤器（Global Filters）][Spring Cloud Gateway-_Global Filters]

## 10-11 悬念：如何为Spring Cloud Gateway整合Sentinel？ ##

**Sentinel1.6 才支持整合Spring Cloud Gateway**

## 10-12 监控Spring Cloud Gateway ##

[Spring Cloud Gateway监控][Spring Cloud Gateway]

## 10-13 排错、调试技巧总结【调试排错三板斧】 ##

[Spring Cloud Gateway排错、调试技巧总结][Spring Cloud Gateway 1]

## 10-14 进阶：再谈过滤器执行顺序 ##

![在这里插入图片描述][202008122021035.png_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 19]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 20]

![在这里插入图片描述][20200812202325647.png_pic_center]  
修改代码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 21]

## 10-15 Spring Cloud Gateway限流 ##

[Spring Cloud Gateway限流详解][Spring Cloud Gateway 2]

## 10-16 本章总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 22]

# 第11章 微服务的用户认证与授权 #

11-1 认证授权——必然会面临的话题

## 11-2 有状态 vs 无状态 ##

*  有状态(session)  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 23]
 *  无状态 (无状态现在使用的广泛)  
    无状态中的token和有状态的中的sessio一样都是判断用户是否登录的凭证  
    无状态请款下服务器端只做解密和校验不在进行存储，而是由客户端(浏览器)存储  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 24]
 *  无状态和有状态的优缺点  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 25]

## 11-3 微服务认证方案01-“处处安全”方案 ##

[OAuth2实现单点登录SSO][OAuth2_SSO]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 26]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 27]

## 11-4 微服务认证方案02-外部无状态，内部有状态方案 ##

## 11-5 微服务认证方案03-“网关认证授权，内部裸奔”方案 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 30]

## 11-6 微服务认证方案04-“内部裸奔”改进方案 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 31]

## 11-7 微服务认证方案05-方案对比与选择 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 32]

## 11-8 访问控制模型 ##

## 11-9 JWT是什么？【是什么、组成、上手】 ##

Springboot整合JWT

<dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt-api</artifactId>
                <version>0.10.7</version>
            </dependency>
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt-impl</artifactId>
                <version>0.10.7</version>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt-jackson</artifactId>
                <version>0.10.7</version>
                <scope>runtime</scope>
            </dependency>

11-10 实现认证授权01-实现小程序登录1 (10:05)  
11-11 实现认证授权01-实现小程序登录2 (14:32)  
11-12 AOP实现登录状态检查 (20:39)  
11-13 内容中心实现登录状态检查 (04:06)  
11-14 Feign实现Token传递 (09:29)  
11-15 RestTemplate实现Token传递 (09:41)  
11-16 AOP实现用户权限验证 (18:48)  
11-17 网关、用户中心、内容中心、前端登录授权集成测试 (04:36)  
11-18 本章总结 (02:12)

## 第12章 配置管理-Nacos ##

## 12-1 为什么要实现配置管理？ (01:52) ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 38]

## 12-2 使用Nacos管理配置 ##

SpringBoot整合Nacos管理配置  
1.加依赖

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            </dependency>

1.  没有注解
2.  写配置  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 39]  
    新建文件  
    bootstrap.yml

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 40]

spring:
      cloud:
        nacos:
          config:
            server-addr: 127.0.0.1:8848
            file-extension: yaml
      application:
        name: content-center
      profiles:
        active: dev

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 41]

代码

@Value("${your.configuration}")
        private String yourConfiguration;
    
        @GetMapping("/test-config")
        public String testConfiguration() { 
            return this.yourConfiguration;
        }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 42]

打开nacos控制台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 43]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 44]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 45]

## 12-3 配置属性动态刷新与回滚(附回滚Bug) ##

在controller加注解  
@RefreshScope  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 46]

## 12-4 应用的配置共享 ##

![在这里插入图片描述][20200813201345984.png_pic_center]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 49]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 50]  
![在这里插入图片描述][20200813201404903.png_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 51]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 52]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 53]

## 12-5 引导上下文 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 54]

默认远程配置高于本地配置  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 55]  
要把这些配置内容放到远程配置中，放在applicatin.ymla和bootstrap.yml是不生效的  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 56]

## 12-6 Nacos数据持久化 (05:22) ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 57]

## 12-7 搭建生产可用的Nacos集群 ##

[搭建生产可用的Nacos集群][Nacos]

## 12-8 配置最佳实践总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 58]

# 第13章 调用链监控-Sleuth #

## 13-1 大白话剖析调用链监控原理 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 59]

*  调用链监控工具的原理  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 60]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 61]

## 13-2 整合Sleuth ##

![在这里插入图片描述][20200814091119406.png_pic_center]

*  Sleuth 术语:  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 62]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 63]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 64]

*  springBoot整合Sleuth

1.  加依赖  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 65]
2.  加注解
3.  该配置

## 13-3 Zipkin搭建与整合 ##

![在这里插入图片描述][20200814094148814.png_pic_center]

[Zipkin Server下载与搭建][Zipkin Server]

*  SpringBoot整合Zipkin

1.  加依赖  
    zipkin包含Sleuth

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zipkin</artifactId>
            </dependency>

1.  加注解
2.  该配置

spring:
      zipkin:
        base-url: http://localhost:9411/
        discoveryClientEnabled: false
      sleuth:
        sampler:
          # 抽样率，默认是0.1（10%）
          probability: 1.0

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 66]

## 13-4 整合Zipkin之后Nacos报错解决 (07:30) ##

[解决Spring Cloud Alibaba/Spring Cloud整合Zipkin之后的报错问题][Spring Cloud Alibaba_Spring Cloud_Zipkin]

spring:
      zipkin:
        base-url: http://localhost:9411/
        discoveryClientEnabled: false

这其实是Spring Cloud Sleuth子项目 spring-cloud-sleuth-zipkin 的一个Bug！

相关的Issue在：https://github.com/spring-cloud/spring-cloud-sleuth/issues/1376  
解决的Pul Request在：https://github.com/spring-cloud/spring-cloud-sleuth/pull/1379 ，代码已经合并了，在 Spring Cloud Greenwich SR3 版本中会修正！  
简单总结一下：

如果你使用的是Greenwich SR3之前的版本，务必使用 spring.zipkin.discoveryClientEnabled = false ，否则配置不生效！！  
如果你使用的是Greenwich SR3及更高版本，可使用 discovery-client-enabled 或者 discoveryClientEnabled 。

13-5 为所有微服务整合Zipkin (06:38)

## 13-6 Zipkin数据持久化（Elasticsearch） ##

下载  
[官网][Link 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 69]

指定环境变量启动  
![在这里插入图片描述][20200814104713219.png_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 73]

## 13-7 依赖关系图 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 74]  
添加依赖启动  
![在这里插入图片描述][20200814110326281.png_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 75]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 76]

第14章 业务功能完善  
14-1 本章概要 (00:24)  
14-2 编写分享列表页 (12:03)  
14-3 解决Mybatis结果映射问题 (01:59)  
14-4 积分兑换指定分享 (17:00)  
14-5 项目集成测试 (10:36)

# 第15章 进阶：既有代码优化与改善 #

15-1 本章概述 (01:14)

## 15-2 简单指标：Statistic ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 77]

利用IDEA Statistic这个插件来检查  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 78]

15-3 Alibaba Java代码规约 (03:30)

## 15-4 SonarQube ##

[手把手使用SonarQube分析、改善项目代码质量][SonarQube]

## 第16章 进阶：多维度微服务监控 ##

## 16-1 本章概要 ##

上几章提到的监控工具  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 79]

## 16-2 Spring Boot Actuator监控数据可视化：Spring Boot Admin ##

1.  整合springCloud 和springCloud alibaba

把springBoot Adimn 注册到nacos

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>

1.  写配置  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 83]
2.  写注解  
    在启动类上加注解  
    @EnableAdminServer  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 84]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 85]

被监控的服务要整合actuator

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>

management:
      endpoints:
        web:
          exposure:
            include: '*'
      endpoint:
        health:
          show-details: always

## 16-3 JVM监控 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 86]

16-4 GC日志、线程Dump日志、堆Dump可视化分析 (04:02)

## 16-5 日志监控 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 87]

[Spring Cloud Sleuth使用ELK收集&分析日志][Spring Cloud Sleuth_ELK]

16-6 其他监控 (01:15)  
第17章 进阶：完美融合异构微服务  
17-1 如何完美整合异构微服务？ (01:54)  
17-2 Spring Cloud Wii实现完美整合 (11:45)  
第18章 课程总结  
18-1 课程总结 (03:20)

## 第19章 Spring Cloud Alibaba升级到2.1.0 ##

[Spring Cloud Alibaba升级到2.1.0][Spring Cloud Alibaba_2.1.0]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 88]

关于SPringBoot、springCloud、springCloudAlibaba 三者版本兼容性选择

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 89]

19-1 升级到Spring CLoud Alibaba 2.1.0-1 (04:40)  
19-2 升级到Spring CLoud Alibaba 2.1.0-2 (05:17)  
19-3 升级到Spring CLoud Alibaba 2.1.0-3 (02:21)  
19-4 升级到Spring CLoud Alibaba 2.1.0-4 (01:15)

[SpringCloud Alibaba]: https://blog.csdn.net/shunhua19881987/article/details/104053330?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param
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[Spring Cloud Alibaba]: https://coding.imooc.com/learn/list/358.html
[Link 1]: https://www.imooc.com/t/1863086
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[20200716215144312.png]: /images/20230209/ed2e5411a6d14d11a53f3d0a7bc9b994.png
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[20200716215709989.png]: /images/20230209/1b60254820a34a1a9548452b2381bc74.png
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[20200716220157630.png]: /images/20230209/b138d2724e6c44a2b9631d3ef45274fe.png
[20200716220348941.png]: /images/20230209/1ca630c6f8004fd2bb51299e8a0fcb1a.png
[Spring Boot _ Actuator]: https://blog.csdn.net/yangshengwei230612/article/details/107396413
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[20200719223027427.png]: /images/20230209/2f58a8241a164087ae5a06220d799b0e.png
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[5]: https://blog.csdn.net/u010164507/article/details/104748945/
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[API_]: https://t.itmuch.com/doc.html
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[github]: https://github.com/abel533/mapper
[1.3 _ Spring Boot]: https://github.com/abel533/mapper/wiki
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[Intellij IDEA_Mybatis Mapper_6]: https://www.imooc.com/article/287865
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[20200721205333334.png]: /images/20230209/df76e6df11ed4fccb7c375ac906f5cd9.png
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[SpringCloud Alibaba _springaboot]: https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E
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[20200722201240882.png]: /images/20230209/755998e1266649a4aae7abd38aaed9eb.png
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[spring-cloud-alibaba]: https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E#%E4%BE%9D%E8%B5%96%E7%AE%A1%E7%90%86
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[Github]: https://github.com/alibaba/nacos/tree/0.2.1
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[nacose]: https://nacos.io/zh-cn/docs/what-is-nacos.html
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[Feign]: https://www.imooc.com/article/289000
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[Feign 1]: https://www.imooc.com/article/289005
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[Sentinel]: https://github.com/alibaba/Sentinel/releases
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[Alibaba Sentinel_-_-_Nacos]: https://www.imooc.com/article/289464
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[MQ]: https://www.imooc.com/article/290040
[RocketMQ 4.5.1]: https://www.imooc.com/article/290089
[RocketMQ]: https://www.imooc.com/article/290092
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[Apache RocketMQ]: https://git.imooc.com/coding-358/rocketmq-dev-guide
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[Spring Boot Messaging]: https://docs.spring.io/spring-boot/docs/2.0.6.RELEASE/reference/htmlsingle/#boot-features-messaging
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[Spring Cloud Gateway-_Route Predicate Factories]: https://www.imooc.com/article/290804
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[Spring Cloud Gateway-_GatewayFilter Factories]: https://www.imooc.com/article/290816
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[Spring Cloud Gateway-_Global Filters]: https://www.imooc.com/article/290821
[Spring Cloud Gateway]: https://www.imooc.com/article/290822
[Spring Cloud Gateway 1]: https://www.imooc.com/article/290824
[202008122021035.png_pic_center]: https://img-blog.csdnimg.cn/202008122021035.png#pic_center
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[20200812202325647.png_pic_center]: https://img-blog.csdnimg.cn/20200812202325647.png#pic_center
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[Spring Cloud Gateway 2]: https://www.imooc.com/article/290828
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[OAuth2_SSO]: https://www.cnblogs.com/cjsblog/p/10548022.html
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[JWT]: https://www.imooc.com/article/290892
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[Nacos]: https://www.imooc.com/article/288153
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[20200814094148814.png_pic_center]: https://img-blog.csdnimg.cn/20200814094148814.png#pic_center
[Zipkin Server]: https://www.imooc.com/article/291572
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[Spring Cloud Alibaba_Spring Cloud_Zipkin]: https://www.imooc.com/article/291578
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[20200814103845447.png_pic_center]: https://img-blog.csdnimg.cn/20200814103845447.png#pic_center
[Link 2]: https://www.elastic.co/cn/downloads/elasticsearch
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 77]: https://img-blog.csdnimg.cn/20200814110723960.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg==,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg_size_16_color_FFFFFF_t_70_pic_center 78]: https://img-blog.csdnimg.cn/2020081411090916.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdzaGVuZ3dlaTIzMDYxMg==,size_16,color_FFFFFF,t_70#pic_center
[SonarQube]: https://www.imooc.com/article/291857
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[Spring Cloud Sleuth_ELK]: https://www.imooc.com/article/291751
[Spring Cloud Alibaba_2.1.0]: https://www.imooc.com/article/295059
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