spring-boot整合Dubbo分布式架构案例

1.运行环境

开发工具：intellij idea

JDK版本：1.8

项目管理工具：Maven 3.2.5

2.项目文件目录

3.Maven Plugin管理

总项目 pom.xml配置代码：

 <?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>spring-boot-dubbo</groupId>
     <artifactId>spring-boot-dubbo</artifactId>
     <packaging>pom</packaging>
     <version>1.0-SNAPSHOT</version>
     <modules>
         <module>spring-boot-dubbo-api</module>
         <module>spring-boot-dubbo-provider</module>
         <module>spring-boot-dubbo-consumer</module>
     </modules>

     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>1.5.6.RELEASE</version>
     </parent>

     <properties>
         <java.version>1.7</java.version>
         <springboot.version>1.5.6.RELEASE</springboot.version>
     </properties>

     <dependencies>
         <!-- Spring Boot web依赖 -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
         <!-- Spring Boot test依赖 -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
         <!-- Spring Boot dubbo依赖 -->
         <dependency>
             <groupId>io.dubbo.springboot</groupId>
             <artifactId>spring-boot-starter-dubbo</artifactId>
             <version>1.0.0</version>
         </dependency>
     </dependencies>

 </project>

provider pom.xml配置代码：

 <?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">
     <parent>
         <artifactId>spring-boot-dubbo</artifactId>
         <groupId>spring-boot-dubbo</groupId>
         <version>1.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

     <artifactId>spring-boot-dubbo-provider</artifactId>

     <dependencies>
         <dependency>
             <groupId>spring-boot-dubbo</groupId>
             <artifactId>spring-boot-dubbo-api</artifactId>
             <version>1.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
                 <version>${springboot.version}</version>
             </plugin>
         </plugins>
     </build>

 </project>

consumer pom.xml配置代码：

 <?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">
     <parent>
         <artifactId>spring-boot-dubbo</artifactId>
         <groupId>spring-boot-dubbo</groupId>
         <version>1.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

     <artifactId>spring-boot-dubbo-consumer</artifactId>

     <dependencies>
         <dependency>
             <groupId>spring-boot-dubbo</groupId>
             <artifactId>spring-boot-dubbo-api</artifactId>
             <version>1.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
                 <version>${springboot.version}</version>
             </plugin>
         </plugins>
     </build>

 </project>

4.api相关配置编写

ExampleService接口类编写

 package com.goku.demo.api.service;

 /**
  * Created by nbfujx on 2017-11-23.
  */
 public interface ExampleService {
     String echo(String str);
 }

5.provider相关配置编写

application.properties编写

## 避免和 consumer 工程端口冲突
server.port=8081

spring.dubbo.application.name=provider
spring.dubbo.registry.address=zookeeper://localhost:2181
spring.dubbo.protocol.name=dubbo
spring.dubbo.protocol.port=20880
## 本机的IP地址
spring.dubbo.protocol.host=127.0.0.1
spring.dubbo.scan=com.goku.demo
## 设置Module
spring.dubbo.module.default=false

ExampleServiceImpl接口实现类编写

package com.goku.demo.service.impl;

import com.goku.demo.api.service.ExampleService;
import com.alibaba.dubbo.config.annotation.Service;

/**
 * Created by nbfujx on 2017-11-23.
 */
@Service(version = "1.0.0")
public class ExampleServiceImpl implements ExampleService {

    @Override
    public String echo(String str) {
        return "hello"+ str;
    }
}

6.consumer相关配置编写

application.properties编写

spring.dubbo.application.name=consumer
spring.dubbo.registry.address=zookeeper://localhost:2181
spring.dubbo.scan=com.goku.demo
spring.dubbo.module.default=false

ExampleController控制器编写

 package com.goku.demo.controller;

 import com.alibaba.dubbo.config.annotation.Reference;
 import com.goku.demo.api.service.ExampleService;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;

 /**
  * Created by nbfujx on 2017-11-20.
  */
 @RestController
 public class ExampleController {

     @Reference(version = "1.0.0")
     public ExampleService exampleService;

     @RequestMapping("/")
     public String helloWorld()
     {
         return "helloWorld";
     }

     @RequestMapping("/{str}")
     public String echo(@PathVariable  String str)
     {
         return exampleService.echo(str);
     }
 }

7.在页面上运行

http://localhost:8080/

http://localhost:8080/str

8.降级服务

mock的配置可以在出现非业务异常(比如超时，网络异常等)时执行。mock的配置支持两种，一种为boolean值，默认的为false。如果配置为true，则缺省使用mock类名，即类名+Mock后缀；另外一种则是配置"return null"，可以很简单的忽略掉异常。

ExampleServiceMock缺省类编写

 package com.goku.demo.api.service;

 import org.springframework.stereotype.Service;

 /**
  * Created by nbfujx on 2017-11-27.
  */
 @Service
 public class ExampleServiceMock  implements ExampleService {
     @Override
     public String echo(String str) {
         return "hello"+ str+"this is error!";
     }
 }

ExampleController控制器修改

 package com.goku.demo.controller;

 import com.alibaba.dubbo.config.annotation.Reference;
 import com.goku.demo.api.service.ExampleService;
 import com.goku.demo.api.service.ExampleServiceMock;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;

 /**
  * Created by nbfujx on 2017-11-20.
  */
 @RestController
 public class ExampleController {

     @Reference(version = "1.0.0",check=false,mock="com.goku.demo.api.service.ExampleServiceMock")
     @Autowired
     public ExampleService exampleService;

     @RequestMapping("/")
     public String helloWorld()
     {
         return "helloWorld";
     }

     @RequestMapping("/{str}")
     public String echo(@PathVariable  String str)
     {
         return exampleService.echo(str);
     }
 }

测试服务未启动返回值

http://localhost:8080/str

9.GITHUB地址

https://github.com/nbfujx/springBoot-learn-demo/tree/master/spring-boot-dubbo

待续