Spring Boot+Dubbo

介绍

• Dubbo是阿里巴巴公司开源的一个高性能、轻量级的 Java RPC 框架。

• Zookeeper是一个开源的分布式的，为分布式应用提供协调服务的 Apache 项目。

这里是需要使用到Zookeeper的，可以理解为Nacos和OpenFeign，需要把不同的服务注册到Zookeeper然后不同服务之间需要相互调用，则需要使用Dubbo。

下载安装

• 安装Zookeeper

  • 下载链接：zookeeper

  • 配置文件：

    解压运行需要在conf目录下创建zoo.cfg文件，其内容为：

      # The number of milliseconds of each tick
      tickTime=2000
      # The number of ticks that the initial 
      # synchronization phase can take
      initLimit=10
      # The number of ticks that can pass between 
      # sending a request and getting an acknowledgement
      syncLimit=5
      # the directory where the snapshot is stored.
      # do not use /tmp for storage, /tmp here is just 
      # example sakes.
      dataDir=D:/application/apache-zookeeper-3.8.0-bin/data
      # the port at which the clients will connect
      clientPort=10011
      admin.serverPort=2182
    

    最主要修改的是clientPort，要指定其端口号

  • 启动服务：

    zkCli.cmd

• 安装dubbo-admin

  • 下载链接：dubbo-admin

  • 修改配置：

    修改\dubbo-admin-server\src\main\resources 指定zookeeper地址

  • 打包dubbo-admin:

    mvn clean package -Dmaven.test.skip=true

  • 运行jar包和前端

  • 账号密码默认为root

代码部分

目录结构

pom内容

• 内容：

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.7.6</spring-boot.version>
        <dubbo-version>3.2.0-beta.4</dubbo-version>
    </properties>
    <dependencyManagement>
          <dependencies>
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-dependencies</artifactId>
                  <version>${spring-boot.version}</version>
                  <type>pom</type>
                  <scope>import</scope>
              </dependency>
              <dependency>
                  <groupId>org.projectlombok</groupId>
                  <artifactId>lombok</artifactId>
                  <optional>true</optional>
              </dependency>
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-starter-test</artifactId>
                  <scope>test</scope>
              </dependency>
              <!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter -->
              <dependency>
                  <groupId>org.apache.dubbo</groupId>
                  <artifactId>dubbo-spring-boot-starter</artifactId>
                  <version>${dubbo-version}</version>
              </dependency>
  
              <dependency>
                  <groupId>org.apache.dubbo</groupId>
                  <artifactId>dubbo-bom</artifactId>
                  <version>${dubbo-version}</version>
                  <type>pom</type>
              </dependency>
              <dependency>
                  <groupId>org.apache.dubbo</groupId>
                  <artifactId>dubbo-dependencies-zookeeper-curator5</artifactId>
                  <version>${dubbo-version}</version>
                  <type>pom</type>
              </dependency>
          </dependencies>
      </dependencyManagement>
  

gmall-interface

public interface DemoService {
    String sayInfo(String name);
}

dubbo-service-provider

• pom.xml

  <dependencies>
        <!-- spring boot starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.dragon</groupId>
            <artifactId>gmall-interface</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper-curator5</artifactId>
            <type>pom</type>
            <exclusions>
                <exclusion>
                    <artifactId>slf4j-reload4j</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
  

• application.properties

  server.port=8080
  # 注册中心的服务名
  dubbo.application.name=dubbo-springboot-service-provider
  dubbo.protocol.name=dubbo
  dubbo.protocol.port=30881
  dubbo.application.qos-port=32223
  
  # 注册中心地址
  #zookeeper.address = 127.0.0.1
   dubbo.registry.address=zookeeper://${zookeeper.address:127.0.0.1}:10011 #端口为zookeeper设置的端口
  

• 具体代码

  

  @DubboService //添加了 @DubboService 注解，通过这个配置可以基于 Spring Boot 去发布 Dubbo 服务
  public class ServiceImpl implements DemoService {
      @Override
      public String sayInfo(String name) {
          return "hello" + name;
      }
  }
  

注意：启动类需要添加注解：@EnableDubbo

dubbo-service-consumer

• pom.xml

  <dependencies>
  
          <dependency>
              <groupId>org.apache.dubbo</groupId>
              <artifactId>dubbo-spring-boot-starter</artifactId>
          </dependency>
          <dependency>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter-web</artifactId>
          </dependency>
          <dependency>
              <groupId>org.apache.dubbo</groupId>
              <artifactId>dubbo-dependencies-zookeeper-curator5</artifactId>
              <type>pom</type>
              <exclusions>
                  <exclusion>
                      <groupId>org.slf4j</groupId>
                      <artifactId>slf4j-reload4j</artifactId>
                  </exclusion>
              </exclusions>
          </dependency>
  
          <dependency>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter</artifactId>
          </dependency>
  
          <dependency>
              <groupId>com.dragon</groupId>
              <artifactId>gmall-interface</artifactId>
              <version>0.0.1-SNAPSHOT</version>
          </dependency>
      </dependencies>
  

• application.properties

  server.port=8081
  # 在注册中心的服务名
  dubbo.application.name=dubbo-springboot-service-consumer
  dubbo.protocol.name=dubbo
  dubbo.protocol.port=-1
  # 注册中心地址
  dubbo.registry.address=zookeeper://${zookeeper.address:127.0.0.1}:10011
  

• 具体代码

@Component
public class Task implements ConsumerTask {
    @DubboReference
    private DemoService demoService;

    @Override
    public void Task(){
        String result = demoService.sayInfo("Dubbo!");
        System.out.println("result =======> " + result);

        new Thread(() -> {
            while (true){
                try{
                    Thread.sleep(1000);

                    System.out.println("Thread Result ======> " + result);
                }catch (Exception e){
                    e.printStackTrace();
                    Thread.currentThread().interrupt();
                }
            }
        }).start();
    }
}

注意：启动类需要添加注解：@EnableDubbo