第5.1.5 SpringCloudConfig

╰半橙微兮° 2022-04-02 09:47 202阅读 0赞

从下图可以看出，SpringCloudConfig用于统一管理各微服务的配置信息，例如数据库连接、redis连接、日志配置等跟各自系统有关的属性配置。采用此架构后，只需要将配置信息上传到svn或git上，通过http请求刷新可以实现各个环境的热部署。  
![1][]  
以往的系统都是采取`application-`环境后缀的方式，  
![1][1 1]  
采用springcloudconfig，就不需要了，只需要配置`bootstrap.yml`就可以了  
**1 config server**  
搭建configserver比较简单，代码量很少。  
**1.1 配置启动服务**  
也就这一个代码了

import lombok.extern.slf4j.Slf4j;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    @EnableConfigServer
    @Slf4j
    public class ConfigServerApplication { 
    
        public static void main(String[] args) { 
            try{ 
                SpringApplication.run(ConfigServerApplication.class, args);
            }finally { 
                log.info("server start finish");
            }
        }
    }

**1.2 pom.xml**  
从下面的配置可以看出，configserver的配置更新是通过消息队列来通知的。

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.dzmsoft</groupId>
        <artifactId>config-server</artifactId>
        <version>1.0.0</version>
        <packaging>jar</packaging>
    
        <name>config-server</name>
        <description>统一配置中心</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.1.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
            <spring-cloud.version>Finchley.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-server</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-bus-amqp</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            <dependency>
                <groupId>org.tmatesoft.svnkit</groupId>
                <artifactId>svnkit</artifactId>
                <version>1.9.0</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.14</version>
                <scope>provided</scope>
            </dependency>
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring-cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <finalName>${name}</finalName>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
        <repositories>
            <repository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
    
    
    </project>

**1.3 bootstrapy.yml**  
这里链接配置采取的是对接svn的方式，消息队列通过SpringCloud Bus对接RabbitMQ，敏感信息通过JCE进行加密

server:
      port: 9015
    spring:
      profiles:
        active: subversion
      application:
        name: config-server
      cloud:
        config:
          server:
            svn:
              uri: https://ip:port/svn/config
              username: test
              password: 123456
      rabbitmq:
        host: 192.168.5.130
        port: 5672
        username: test
        password: test123
    eureka:
      instance:
        #每5秒发送一次请求给eureka服务器
        lease-renewal-interval-in-seconds: 5
        #多久剔除服务
        lease-expiration-duration-in-seconds: 10
        preferIpAddress: true
        statusPageUrlPath: /actuator/info
        healthCheckUrlPath: /actuator/health
      client:
        service-url:
          defaultZone: http://192.168.5.102:8761/eureka
    management:
      endpoints:
        web:
          exposure:
            include: bus-refresh
    encrypt:
      key-store:
        location: classpath:config-server.keystore
        alias: config-server
        password: test
        secret: 123456

**1.4 敏感信息加密**  
`local_policy.jar`和`US_export_policy.jar`可以在[JCE下载][JCE]  
在服务器环境，将附件中 2个jar 放至 %JAVA\_HOME%/jre/lib/security 目录下  
在客户端配置文件 使用“\{cipher\} 密文”来保存加密数据  
例如：password: ‘\{cipher\}AQAQBnh2Gl488iZP29mRX6E3TzzfoQLFxGEzhpeoaHgz2ZN3usfP5IQljpBYQmMC23OqAj0gj1cY9XroJB4U2N/8Bs1cjwAqy2biOVboQma4EjRpVghWI8hc6IzReOCAPEYV1L9O7F+EODcvI5Y0Ub3S6d4MboKMSS3yazJZz6IkaGPstUCqDqKFigj7G24sQSVk5jaPZdwynORL7NZb6WLfmAVyQh6fOTe95TPXDpze//P9ICFAAG4PpMEDqNIm05apvXDbPl921RPA9OuIJv05Gc9xbJ622e3e1x7ZVwkNiuPBDD4QNGmZWfLe80XEs3FvMQdZgV68MuYUL6TsJIhzvzeijwoOvKHsA/MZxHFjIR6puaEntf4fhIkyPV73V8I=’  
**2 客户端配置**  
**2.1 bootstrap.yml**  
客户端只需要配置`bootstrap.yml`即可，这里连接的是eureka

spring:
      application:
        name: mp-server
      jackson:
        date-format: yyyy-MM-dd HH:mm:ss
        time-zone: GMT+8
        default-property-inclusion: non_null
      cloud:
        # 读取配置中心配置
        config:
          discovery:
            enabled: true
            service-id: config-server
          profile: dev
          label: mp-server
        bus:
          trace:
            enabled: true
    server:
      port: 8093
    eureka:
      instance:
        #每5秒发送一次请求给eureka服务器
        lease-renewal-interval-in-seconds: 5
        #多久剔除服务
        lease-expiration-duration-in-seconds: 10
        preferIpAddress: true
        statusPageUrlPath: /actuator/info
        healthCheckUrlPath: /actuator/health
      client:
        service-url:
          defaultZone: http://192.168.5.207:8761/eureka/,http://192.168.5.180:8761/eureka/,http://192.168.5.154:8761/eureka/

**2.2 客户端在svn中的配置文件**  
将这三个文件上传到svn中`https://ip:port/svn/config/工程名称`目录下  
![2][]  
**2.3 刷新配置**  
可以使用postman工具，向config server发送配置刷新post请求，没有异常即算配置成功。  
![2][2 1]

[1]: /images/20220402/c69ec4866dd34b3aa7370c4ff59f64cc.png
[1 1]: /images/20220402/38387818681249b4b112180c56aa5caa.png
[JCE]: https://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
[2]: /images/20220402/e9a5d25af2a14022882fc951dc3ec695.png
[2 1]: /images/20220402/ca9f330ae20c4c4387359990f2982eb0.png