创建module【cloud-consumerzk-order80】

改pm.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <parent>
  6.         <artifactId>cloud2020</artifactId>
  7.         <groupId>com.sgy.cloud2020</groupId>
  8.         <version>1.0-SNAPSHOT</version>
  9.     </parent>
  10.     <modelVersion>4.0.0</modelVersion>
  12.     <artifactId>cloud-consumerzk-order80</artifactId>
  14.     <dependencies>
  15.         <dependency>
  16.             <groupId>com.sgy.cloud2020</groupId>
  17.             <artifactId>cloud-consumer</artifactId>
  18.             <version>${project.version}</version>
  19.         </dependency>
  21.         <!--springcloud整合zookeeper-->
  22.         <dependency>
  23.             <groupId>org.springframework.cloud</groupId>
  24.             <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
  25.         </dependency>
  27.         <dependency>
  28.             <groupId>org.projectlombok</groupId>
  29.             <artifactId>lombok</artifactId>
  30.             <scope>provided</scope>
  31.         </dependency>
  32.     </dependencies>
  33. </project>

改主启动类

/**
 * Created by AaronShen on 2020/5/27
 */
@SpringBootApplication
// 服务发现注解
@EnableDiscoveryClient
public class OrderZkMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderMain80.class,args);
    }
}

改yml

server:
  port: 80

spring:
  cloud:
    zookeeper:
      connect-string: 192.168.200.10:2181
  application:
    name: cloud-consumer-order

controller

创建RestTemplate

/**
 * Created by AaronShen on 2020/5/27
 */
@Configuration
public class ApplicationContextBean {
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }
}

能导致服务调用失败

你必须添加@LoadBalanced注解，否则，使用RestTemplate调用服务会失败

创建controller

/**
 * Created by AaronShen on 2020/5/27
 */
@RestController
public class OrderController {
    private final static String PATMENT_URL = "http://cloud-payment-server";

    @Resource
    RestTemplate restTemplate;

    @GetMapping("/consumer/payment/zk")
    public Object order() {
        return restTemplate.getForObject(PATMENT_URL + "/zk",Object.class);
    }
}

测试

启动订单服务

查看zk客户端服务注册情况

可以清晰的看到服务已经注册进zookeeper中了

[zk: localhost:2181(CONNECTED) 25] ls /services
[cloud-consumer-order, cloud-payment-server]

浏览器访问订单服务

1610803428860.png

注意点：

  • 你必须为RestTemplate添加 @LoadBalanced 注解，否则调用失败