serviceComb学习笔记

##ServiceComb学习笔记

1.下载并安装SDK

 //使用git下载，需要先安装git
 git clone https://github.com/apache/servicecomb-java-chassis.git 
 cd servicecomb-java-chassis
 //将sdk安装的本地仓库
 mvn clean install -DskipTests

2.rest方式例子

1.创建父工程

• pom文件内容

  
  <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>4.0.0modelVersion>
  
      <groupId>com.zjbgroupId>
      <artifactId>servicecombtestartifactId>
      <packaging>pompackaging>
      <version>1.0-SNAPSHOTversion>
      <modules>
          <module>service-interfacemodule>
          <module>service-providermodule>
          <module>service-customermodule>
      modules>
      
      <parent>
          <groupId>org.springframework.bootgroupId>
          <artifactId>spring-boot-starter-parentartifactId>
          <version>1.5.12.RELEASEversion>
          
          <relativePath/>
      parent>
  
      <properties>
          <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
          <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
          <java.version>1.8java.version>
      properties>
  
      
      <dependencyManagement>
          <dependencies>
              <dependency>
                  <groupId>org.apache.servicecombgroupId>
                  <artifactId>java-chassis-dependenciesartifactId>
                  <version>1.0.0-m2version>
                  <type>pomtype>
                  <scope>importscope>
              dependency>
          dependencies>
      dependencyManagement>
  project>
  

2.创建接口类

• pom文件不需要添加任何内容

• 创建一个名字为RpcService的接口

  package com.zjb.service;
  
  /**
   * @author zhaojianbo
   * @date 2019/7/14 16:50
   */
  public interface RestService {
      String sayHello(String name);
  }
  

• mvn install 命令将该类安装到本地仓库中，供其他模块使用

3.服务提供者模块

• pom文件内容

  
  <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>servicecombtestartifactId>
          <groupId>com.zjbgroupId>
          <version>1.0-SNAPSHOTversion>
      parent>
      <modelVersion>4.0.0modelVersion>
  
      <artifactId>service-providerartifactId>
  
      <dependencies>
          
          <dependency>
              <groupId>org.hibernategroupId>
              <artifactId>hibernate-validatorartifactId>
          dependency>
          
          <dependency>
              <groupId>org.springframework.bootgroupId>
              <artifactId>spring-boot-starter-data-restartifactId>
          dependency>
          
          <dependency>
              <groupId>org.apache.servicecombgroupId>
              <artifactId>spring-boot-starter-providerartifactId>
          dependency>
          <dependency>
              <groupId>org.springframework.bootgroupId>
              <artifactId>spring-boot-starter-webartifactId>
          dependency>
          <dependency>
              <groupId>com.zjbgroupId>
              <artifactId>service-interfaceartifactId>
              <version>1.0-SNAPSHOTversion>
          dependency>
      dependencies>
  project>
  

• RestServiceImpl类的内容

  package com.zjb.impl;
  
  import com.zjb.service.RestService;
  import org.apache.servicecomb.provider.rest.common.RestSchema;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  
  /**
   * @author zhaojianbo
   * @date 2019/7/14 16:59
   */
  @RestSchema(schemaId = "provider")
  public class RestServiceImpl implements RestService {
      @Override
      @GetMapping("/hello")
      public String sayRest(String name) {
          return "hello world " + name;
      }
  }
  

• microservice.yaml文件的内容

  APPLICATION_ID: zjb.servicecomb.io
  service_description:
    name: provider
    version: 0.0.1
  servicecomb:
    handler:
      chain:
        Provider: {}
    rest: #rest通信
      address: 0.0.0.0:9080
    service:
      registry:
        address: http://127.0.0.1:30100 #服务注册中心的地址
        autodiscovery: false #是否可以自动发现
  

• spring启动类，略

4.服务消费者

• pom文件内容

  <?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>servicecombtest</artifactId>
          <groupId>com.zjb</groupId>
          <version>1.0-SNAPSHOT</version>
      </parent>
      <modelVersion>4.0.0</modelVersion>
  
      <artifactId>service-customer</artifactId>
  
      <dependencies>
          <!--校验规则-->
          <dependency>
              <groupId>org.hibernate</groupId>
              <artifactId>hibernate-validator</artifactId>
          </dependency>
          <!--rest的支持-->
          <dependency>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter-data-rest</artifactId>
          </dependency>
          <!--servicecomb-->
          <dependency>
              <groupId>org.apache.servicecomb</groupId>
              <artifactId>spring-boot-starter-provider</artifactId>
          </dependency>
          <dependency>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter-web</artifactId>
          </dependency>
          <dependency>
              <groupId>com.zjb</groupId>
              <artifactId>service-interface</artifactId>
              <version>1.0-SNAPSHOT</version>
          </dependency>
      </dependencies>
  </project>
  

• RestConsumerServiceImpl类

  package com.zjb.service.impl;
  
  import com.zjb.service.RestService;
  import org.apache.servicecomb.provider.springmvc.reference.RestTemplateBuilder;
  import org.springframework.stereotype.Service;
  import org.springframework.web.client.RestTemplate;
  
  /**
   * @author zhaojianbo
   * @date 2019/7/14 17:16
   */
  @Service
  public class RestConsumerServiceImpl implements RestService {
      //创建restTemplate模板
      private final RestTemplate restTemplate = RestTemplateBuilder.create();
  
      @Override
      public String sayRest(String name) {
          //微服务名称与提供者配置文件中的name对应
          String provideName = "provider";
          //cse是协议，类似dubbo://
          String returnResult = restTemplate.getForObject("cse://" + provideName + "/hello?name=" + name, String.class);
          return returnResult;
      }
  }
  

• RestConsumerController类

  package com.zjb.controller;
  
  import com.zjb.service.RestService;
  import org.apache.servicecomb.provider.rest.common.RestSchema;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  
  /**
   * @author zhaojianbo
   * @date 2019/7/14 17:22
   */
  @RestSchema(schemaId = "customer")
  public class RestConsumerController {
      @Autowired
      private RestService restService;
      @GetMapping("/hello")
      public String sayRest(String name) {
          return restService.sayRest(name);
      }
  }
  

• microservice.yaml

  APPLICATION_ID: zjb.servicecomb.io
  service_description:
    name: customer
    version: 0.0.1
  servicecomb:
    handler:
      chain:
        Provider: {}
    rest: #rest通信
      address: 0.0.0.0:9081
    service:
      registry:
        address: http://127.0.0.1:30100 #服务注册中心的地址
        autodiscovery: false #是否可以自动发现
  

• springBoot启动类，略

5.启动过程

• 启动注册中心，如果没有则下载ServiceComb Service-Center进到目录中运行service-center.exe(window平台下，使用默认端口，修改则进人conf中修改配置文件)
• 启动提供者
• 启动消费者