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  2. springboot整合zookeeper和dubbo

springboot整合zookeeper和dubbo

由 别来无恙 提交于 2021-02-18 09:49:17

序言

dubbo就是个rpc框架，之前都是一直在用，现在稍微总结下以备以后使用。 我就直接贴代码了，代码肯定能运行，如果运行不了那么看我之前的zookeeper配置，或者把我贴的代码重新复制下，实在不行请留言，我看到会回复的。

  1. 整体项目结构

  • 项目是父子maven结构，父maven中基础jar包都依赖好了，子maven只需继承父maven，额外依赖自己的jar包就可以，其中domain是放实体类的，interfaceapi是放提供者提供给消费者的接口的。provider是提供者consumer是消费者，不过真实项目中可能一个模块即是消费者又是提供者。所以自己需要的话直接写就行，用法都一样的。

2.主pom文件

	<?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>tom.heliming.dubbo</groupId>
		<artifactId>dubbo-demo</artifactId>
		<packaging>pom</packaging>
		<version>1.0-SNAPSHOT</version>
		<modules>
			<module>provider</module>
			<module>consumer</module>
			<module>interfaceapi</module>
			<module>domain</module>
		</modules>
		<parent>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-parent</artifactId>
			<version>2.1.5.RELEASE</version>
			<relativePath/> <!-- lookup parent from repository -->
		</parent>
		<properties>
			<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
			<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
			<maven.compiler.source>1.8</maven.compiler.source>
			<maven.compiler.target>1.8</maven.compiler.target>
			<java.version>1.8</java.version>
		</properties>
		<dependencies>
			<!-- 引入spring-boot-starter以及dubbo和curator的依赖 -->
			<dependency>
				<groupId>com.alibaba.boot</groupId>
				<artifactId>dubbo-spring-boot-starter</artifactId>
				<version>0.2.0</version>
			</dependency>
			<!-- Spring Boot相关依赖 -->
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter</artifactId>
			</dependency>
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-web</artifactId>
			</dependency>

			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-test</artifactId>
				<!-- <scope>test</scope>-->
			</dependency>


		</dependencies>

	</project>

  1. domain模块

    pom 文件

     <?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>dubbo-demo</artifactId>
 		<groupId>tom.heliming.dubbo</groupId>
 		<version>1.0-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>

 	<artifactId>domain</artifactId>


 </project>

    User类

     package top.hh.domain;

 import java.io.Serializable;

 public class User implements Serializable {

 	private Integer id;
 	private Integer age;
 	private String  name;

 	public User() {
 	}

 	public User(Integer age, String name) {
 		this.age = age;
 		this.name = name;
 	}

 	public Integer getAge() {
 		return age;
 	}

 	public void setAge(Integer age) {
 		this.age = age;
 	}

 	public String getName() {
 		return name;
 	}

 	public void setName(String name) {
 		this.name = name;
 	}
 }

  2. 接口模块

  • pom文件

      <?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>dubbo-demo</artifactId>
          <groupId>tom.heliming.dubbo</groupId>
          <version>1.0-SNAPSHOT</version>
      </parent>
      <modelVersion>4.0.0</modelVersion>

      <artifactId>interfaceapi</artifactId>


      <dependencies>
          <dependency>
              <groupId>tom.heliming.dubbo</groupId>
              <artifactId>domain</artifactId>
              <version>1.0-SNAPSHOT</version>
          </dependency>
      </dependencies>
  </project>

    UserServiceApi类

      package top.hh.service;

  import top.hh.domain.User;

  import java.util.List;

  public interface UserServiceApi {

  	public List<User> getUserList(String userId) ;

  	}

  1. 提供者

  • pom文件

      <?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>dubbo-demo</artifactId>
          <groupId>tom.heliming.dubbo</groupId>
          <version>1.0-SNAPSHOT</version>
      </parent>
      <modelVersion>4.0.0</modelVersion>

      <artifactId>provider</artifactId>

      <dependencies>
          <dependency>
              <groupId>tom.heliming.dubbo</groupId>
              <artifactId>interfaceapi</artifactId>
              <version>1.0-SNAPSHOT</version>
          </dependency>
      </dependencies>
     <build>
  		<!-- 打包设置启动springboot的main函数 -->
  		<plugins>
  			<plugin>
  				<groupId>org.springframework.boot</groupId>
  				<artifactId>spring-boot-maven-plugin</artifactId>
  			</plugin>
  		</plugins>
  	</build>
  </project>

    application.yml

      #当前服务/应用的名字
  dubbo:
    application:
  	name: user-service-provider

  #注册中心的协议和地址
    registry:
  	protocol: zookeeper
  	#集群用逗号隔开
  	address: 127.0.0.1:2181

  #通信规则（通信协议和接口）
    protocol:
  	name: dubbo
  	port: 20880

  #连接监控中心
   # monitor:
   #   protocol: registry
  #开启包扫描，可替代 @EnableDubbo 注解
  ##dubbo.scan.base-packages=top.hh.provider.service

    UserServiceImpl类

		package top.hh.provider.service;

		import com.alibaba.dubbo.config.annotation.Service;
		import top.hh.domain.User;
		import top.hh.service.UserServiceApi;

		import java.util.ArrayList;
		import java.util.List;

		/**
		 * 提供者
		 */
		@Service
		@org.springframework.stereotype.Service
		public class UserServiceImpl implements UserServiceApi {

			@Override
			public List<User> getUserList(String userId) {
				List<User> list = new ArrayList<>();
				list.add(new User(1,userId+"hello"));
				return list;
			}
		}

ProviderApp启动类

	package top.hh.provider;


	import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
	import org.springframework.boot.SpringApplication;
	import org.springframework.boot.autoconfigure.SpringBootApplication;

	// 开启基于注解的dubbo功能（主要是包扫描@DubboComponentScan）
	// 也可以在配置文件中使用dubbo.scan.base-package来替代   @EnableDubbo
	@EnableDubbo
	@SpringBootApplication
	public class ProviderApp {

		public static void main(String[] args) {
			SpringApplication.run(ProviderApp.class,args);
		}
	}

  1. 消费者

  • pom文件

      <?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>dubbo-demo</artifactId>
  		<groupId>tom.heliming.dubbo</groupId>
  		<version>1.0-SNAPSHOT</version>
  	</parent>
  	<modelVersion>4.0.0</modelVersion>

  	<artifactId>consumer</artifactId>

  	<dependencies>
  		<dependency>
  			<groupId>tom.heliming.dubbo</groupId>
  			<artifactId>interfaceapi</artifactId>
  			<version>1.0-SNAPSHOT</version>
  		</dependency>
  	</dependencies>
     <build>
  		<!-- 打包设置启动springboot的main函数 -->
  		<plugins>
  			<plugin>
  				<groupId>org.springframework.boot</groupId>
  				<artifactId>spring-boot-maven-plugin</artifactId>
  			</plugin>
  		</plugins>
  	</build>
  </project>

    application.yml文件

      #避免和监控中心端口冲突，设为8081端口访问
  server:
    port: 8081

  dubbo:
    application:
  	name: login-service-consumer

  #注册中心的协议和地址
    registry:
  	protocol: zookeeper
  	#集群用逗号隔开
  	address: 127.0.0.1:2181

  #通信规则（通信协议和接口）
    protocol:
  	name: dubbo
  	port: 20881

  #连接监控中心
   # monitor:
   #   protocol: registry
  	#扫描包
   # packageName: top.hh.consumer.service

    LoginController类

      package top.hh.consumer.controller;

  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.bind.annotation.RestController;
  import top.hh.consumer.service.LoginServiceImpl;

  @RestController
  @RequestMapping
  public class LoginController {

  	@Autowired
  	LoginServiceImpl loginService;

  	@GetMapping(value = "login")
  	@ResponseBody
  	public String login(String userId) {
  		String result = loginService.loginService(userId);

  		if (result==null){
  			return "fail";
  		}
  		return result;
  	}
  }

    LoginServiceImpl类

      package top.hh.consumer.service;

  import com.alibaba.dubbo.config.annotation.Reference;
  import org.springframework.stereotype.Service;
  import top.hh.domain.User;
  import top.hh.service.UserServiceApi;

  import java.util.List;

  @Service
  public class LoginServiceImpl {

  	//failfast快速失效，只发起一次调用，失败立即报错，check=false启动时检查机制（默认是true：如果提供者没启动，消费者无法启动）
  	@Reference(cluster = "failfast", retries = 0, interfaceClass = UserServiceApi.class, lazy = true, check = false, timeout = 5000)
  	UserServiceApi userServiceApi;

  	public String loginService(String userId) {
  		List<User> userList = userServiceApi.getUserList(userId);

  		if (userList != null && userList.size() > 0) {
  			StringBuffer sbf = new StringBuffer();
  			sbf.append("success->");
  			userList.stream().forEach(str -> sbf.append("name :"+str.getName()));
  			return sbf.toString();
  		}
  		return "fail";
  	}
  }

    LoginApp启动类

      package top.hh;

  import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;

  @EnableDubbo
  @SpringBootApplication
  public class LoginApp {

  	public static void main(String[] args) {
  		SpringApplication.run(LoginApp.class, args);
  	}
  }

启动zookeeper, 提供者，消费者 访问：localhost:8081/login/?userId=1

标签
maven
java
bind
Spring
Spring Boot
ZooKeeper
YML
Dubbo
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