SpringBoot第三谈

拼搏现实的明天。 2023-02-20 12:20 5阅读 0赞

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> 本人是一名即将进入大三的物联网工程专业的学生，写博客即是为了记录自己的学习历程，又希望能够帮助到很多和自己一样处于起步阶段的萌新。  
> 临渊羡鱼，不如退而结网。一起加油！  
> 博客主页:[https://blog.csdn.net/qq\_44895397][https_blog.csdn.net_qq_44895397]

## Spring Boot 集成 Dubbo ##

### 1、开发 Dubbo 服务接口 ###

**创建普通 Maven 项目，dubbo 服务接口工程**  
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**创建一个接口：**

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public interface StudentService { 
    
        String getName(String name);
    }

### 2、开发 Dubbo 服务提供者 ###

#### 创建 SpringBoot 框架的 WEB 项目 ####

#### 1）加入依赖 ####

1.  Dubbo 集成 SpringBoot 框架起步依赖

<dependency>
    	<groupId>com.alibaba.spring.boot</groupId>
    	<artifactId>dubbo-spring-boot-starter</artifactId>
    	<version>2.0.0</version>
    </dependency>

1.  Zookeeper 客户端依赖

<dependency>
    	<groupId>com.101tec</groupId>
    	<artifactId>zkclient</artifactId>
    	<version>0.10</version>
    </dependency>

1.  mysql驱动

<dependency>
    	<groupId>mysql</groupId>
    	<artifactId>mysql-connector-java</artifactId>
    </dependency>

1.  Mybatis整合spring boot的起步依赖

<dependency>
    	<groupId>org.mybatis.spring.boot</groupId>
    	<artifactId>mybatis-spring-boot-starter</artifactId>
    	<version>2.0.0</version>
    </dependency>

1.  redis依赖

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

1.  接口工程

<dependency>
    	<groupId>com.yky.springboot</groupId>
    	<artifactId>springbootdemossminterface</artifactId>
    	<version>1.0-SNAPSHOT</version>
    </dependency>

#### 2）核心配置文件 ####

1.  tomcat的配置

#tomcat的配置
    server.port=8090
    server.servlet.context-path=/

1.  mysql的配置

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    spring.datasource.url=jdbc:mysql://localhost:3306/springboot?serverTimezone=UTC&characterEncoding=utf-8
    spring.datasource.username=root
    spring.datasource.password=yky

1.  redis的配置

spring.redis.host=localhost
    spring.redis.port=6379
    #spring.redis.password=yky #密码

1.  指定mapper中映射文件存放的位置

mybatis.mapper-locations=classpath:mapper/*.xml

1.  **dubbo的配置**

#服务名称
    spring.application.name=springbootdemossmprivoder
    #设置当前工程为服务提供者
    spring.dubbo.server=true
    #设置注册中心
    spring.dubbo.registry=zookeeper://localhost:2181

#### 3）编写 Dubbo 的接口实现类 ####

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@Component
    @Service(interfaceName = "com.yky.springboot.service.StudentService",
            version = "1.0-SNAPSHOT",timeout = 15000)
    public class StudentServiceImpl implements StudentService { 
    
        @Autowired
        private StudentMapper studentMapper;
    
        @Override
        public Student queryStudentById(Integer id) { 
            return studentMapper.selectByPrimaryKey(id);
        }
    }

#### 4）启动类上添加@MapperScan@EnableDubboConfiguration注解 ####

1.  **@MapperScan**(basePackages = “com.yky.springboot.mapper”)：扫描mapper文件
2.  **@EnableDubboConfiguration**：加开启 Dubbo 配置

@SpringBootApplication
    @MapperScan(basePackages = "com.yky.springboot.mapper")
    @EnableDubboConfiguration
    public class SpringbootdemossmprivoderApplication { 
    
    	public static void main(String[] args) { 
    		SpringApplication.run(SpringbootdemossmprivoderApplication.class, args);
    	}
    
    }

### 3、开发 Dubbo 服务消费者 ###

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<resources>
    	<resource>
    		<directory>src/main/java</directory>
    		<includes>
    			<include>**/*.*</include> </includes> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include>
    		</includes>
    	</resource>
    </resources>

#### 1）添加依赖 ####

1.  Dubbo 集成 SpringBoot 框架起步依赖
2.  Zookeeper 客户端依赖
3.  spring boot内嵌的jsp依赖，解析jsp页面
4.  接口工程

<dependency>
    		<groupId>com.alibaba.spring.boot</groupId>
    		<artifactId>dubbo-spring-boot-starter</artifactId>
    		<version>2.0.0</version>
    	</dependency>
    	
    	<dependency>
    		<groupId>com.101tec</groupId>
    		<artifactId>zkclient</artifactId>
    		<version>0.10</version>
    	</dependency>
    	
    	<dependency>
    		<groupId>org.apache.tomcat.embed</groupId>
    		<artifactId>tomcat-embed-jasper</artifactId>
    	</dependency>
    	
    	<dependency>
    		<groupId>com.yky.springboot</groupId>
    		<artifactId>springbootdemossminterface</artifactId>
    		<version>1.0-SNAPSHOT</version>
    	</dependency>

#### 2）核心配置文件 ####

1.  tomcat的配置
2.  视图解析器
3.  dubbo服务消费者的配置

#tomcat
    server.port=8080
    server.servlet.context-path=/
    
    #视图解析器
    spring.mvc.view.prefix=/
    spring.mvc.view.suffix=.jsp
    
    #dubbo服务消费者的配置
    #设置dubbo的配置
    spring.application.name=springbootdemossmconsumer
    #设置注册中心
    spring.dubbo.registry=zookeeper://localhost:2181

#### 3）控制层的编写 ####

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@Controller
    public class StudentController { 
    
        @Reference(interfaceName = "com.yky.springboot.service.StudentService",
                version = "1.0-SNAPSHOT", check = false)
        private StudentService service;
    
        @RequestMapping("/student/{stuid}")
        public ModelAndView selectStudent(@PathVariable("stuid") Integer id) { 
            ModelAndView mv = new ModelAndView();
            Student student = service.queryStudentById(id);
            mv.addObject("student", student);
            mv.setViewName("studentjsp");
            return mv;
        }
    }

#### 4）启动类上添加`@EnableDubboConfiguration` ####

## Spring Boot 非 web 应用程序 ##

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### 方式一：直接在 main 方法中，根据 SpringApplication.run()方 法获取返回的 Spring 容器对象，再获取业务 bean 进行调用 ###

*  SpringBoot 程序启动后，返回值是 `ConfigurableApplicationContext`，它也是一个  
    **Spring 容器对象**
 *  它其它相当于原来 Spring 中启动容器

ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("");

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### 方式二：Spring boot 的入口类实现 CommandLineRunner 接口 ###

1.  第一步：SpringBoot 的启动程序，会初始化 spring 容器
2.  第二步：通过容器获取 bean，并注入给 userService
3.  第三步：容器启动后调用 run 方法，在该方法中调用业务方法  
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## SpringBoot 启动Logo的修改或关闭 ##

### 关闭 SpringBoot Logo 图标及启动日志 ###

@SpringBootApplication
    public class Application { 
     	public static void main(String[] args) { 
    		 SpringApplication springApplication = new SpringApplication(Application.class);
     		//关闭启动 logo 的输出
     		springApplication.setBannerMode(Banner.Mode.OFF);
     		springApplication.run(args);
     } }

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### 修改启动的 logo 图标 ###

**在 src/main/resources 放入 banner.txt 文件**

[**可以利用网站生成图标： https://www.bootschool.net/ascii**][https_www.bootschool.net_ascii]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0ODk1Mzk3_size_16_color_FFFFFF_t_70 11]  
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**启动**  
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[https_blog.csdn.net_qq_44895397]: https://blog.csdn.net/qq_44895397
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[https_www.bootschool.net_ascii]: https://www.bootschool.net/ascii
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