编写服务消费者

1、创建一个Maven项目，ArtificatId是microservice-sample-consumer-alarm

2、添加依赖

<parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>1.4.3.RELEASE</version>

  </parent>

  <properties>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <java.version>1.8</java.version>

  </properties>

  <dependencies>

    <dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-web</artifactId>

    </dependency>

    <dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-actuator</artifactId>

    </dependency>

  </dependencies>

  <!-- 引入spring cloud的依赖 -->

  <dependencyManagement>

    <dependencies>

      <dependency>

        <groupId>org.springframework.cloud</groupId>

        <artifactId>spring-cloud-dependencies</artifactId>

        <version>Camden.SR4</version>

        <type>pom</type>

        <scope>import</scope>

      </dependency>

    </dependencies>

  </dependencyManagement>

  <!-- 添加spring-boot的maven插件 -->

  <build>

    <plugins>

      <plugin>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-maven-plugin</artifactId>

      </plugin>

    </plugins>

  </build>

3、创建实体类

4、创建启动类

@SpringBootApplication
public class ConsumerAlarmApplication {
  @Bean
  public RestTemplate restTemplate() {
    return new RestTemplate();
  }

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

@的作用是实例化一个Bean并使用该方法的名称命名，在些等价于:

RestTemplate  restTemplate = new RestTemplate()

5、创建Controller，使用RestTemplate请求生产微服务

@RestController
public class AlarmConsumerController {
  @Autowired
  private RestTemplate restTemplate;

  @GetMapping("/alarm/findAll")
  public User findById() {
    return this.restTemplate.getForObject("http://localhost:8000" , AlarmBean.class);
  }
}

6、编写application.yml

server:
  port: 8010

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