简介 

上一节，我们讲了创建spring cloud生产者，并利用docker-compose部署到swarm集群中，这节我们讨论一下最restTemlate调用生产者服务

一、创建模块（microservice-consumer-movie）

项目结构如下：

二、pom.xml文件

     
         
              
       
        microservice-spring-cloud
               
       
        com.jacky
               
       
        1.0-SNAPSHOT
           
          
      
       4.0.0
          
      
       microservice-consumer-movie
          
      
       pom
          
              
       
        ../microservice-provider-user
           
          
              
       
        UTF-8
               
       
        UTF-8
               
       
        1.8
           
          
              
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-web
                
               
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-eureka
                
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-actuator
                
               
           
          
              
                   
                        
         
          com.spotify
                         
         
          docker-maven-plugin
                         
                             
                              
           
           
            build-image
            
           
            install
            
            
            
             build
             
            
                          
                         
                             
                              
          
           http://192.168.6.130:5678
                              
          
           true
          
                              
                              
          
           ${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}
                              
                              
          
           java:openjdk-8-jdk-alpine
                              
                              
          
           ["java", "-jar", "/${project.build.finalName}.jar"]
                              
           
            
            
             /
             
            
             ${project.build.directory}
             
            
             ${project.build.finalName}.jar
             
            
                          
                     
                
           
      
     

三、实体类（User.java）

package com.jacky.cloud.entity;import java.math.BigDecimal;public class User {  private Long id;  private String username;  private String name;  private Short age;  private BigDecimal balance;  public Long getId() {    return this.id;  }  public void setId(Long id) {    this.id = id;  }  public String getUsername() {    return this.username;  }  public void setUsername(String username) {    this.username = username;  }  public String getName() {    return this.name;  }  public void setName(String name) {    this.name = name;  }  public Short getAge() {    return this.age;  }  public void setAge(Short age) {    this.age = age;  }  public BigDecimal getBalance() {    return this.balance;  }  public void setBalance(BigDecimal balance) {    this.balance = balance;  }}

四、MovieController.java

package com.jacky.cloud.controller;import com.jacky.cloud.entity.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;@RestControllerpublic class MovieController {  @Autowired  private RestTemplate restTemplate;  @Value("${user.userServicePath}")  private String userServicePath;  @GetMapping("/movie/{id}")  public User findById(@PathVariable Long id) {    return this.restTemplate.getForObject(this.userServicePath + id, User.class);  }}

五、启动类（MicroserviceSimpleConsumerMovieApplication）

package com.jacky.cloud;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;import org.springframework.context.annotation.Bean;import org.springframework.web.client.RestTemplate;@SpringBootApplication@EnableEurekaClientpublic class MicroserviceSimpleConsumerMovieApplication {  @Bean  public RestTemplate restTemplate() {    return new RestTemplate();  }  public static void main(String[] args) {    SpringApplication.run(MicroserviceSimpleConsumerMovieApplication.class, args);  }}

六、配置文件application.yml

server:  port: 7901spring:  application:    name: microservice-consumer-movie  #zipkin:    #base-url: http://127.0.0.1:7788user:   userServicePath: http://localhost:7900/simple/      #指定生产者的路径eureka:  client:    healthcheck:      enabled: true    serviceUrl:      defaultZone: http://jacky:admin@peer1:8761/eureka/,http://jacky:admin@peer2:8762/eureka/,http://jacky:admin@peer3:8763/eureka/  instance:    prefer-ip-address: true    instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}