SpringCloud 学习笔记-03-EnableEurekaClient客户端-SerciceOrderApplication

1.参考前面的序列-SerciceOrderApplication，这里面使用到了负载均衡@EnableHystrix

package com.ml0115;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableEurekaClient
@EnableHystrix
public class SerciceOrderApplication {

  public static void main(String[] args) {
    SpringApplication.run(SerciceOrderApplication.class, args);
  }
  @Bean
  @LoadBalanced
  RestTemplate restTemplate() {
    return new RestTemplate();
  }


}

2.ServiceOrderControoler  作为前端的请求处理中心ServiceOrderControoler

package com.ml0115.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public   class  ServiceOrderControoler{
  
  @Autowired
  MemberService  memberService;
  
  @RequestMapping("/getOrderByUserList")
  public List<String> getOrderByUserList() {
    return memberService.getOrderByUserList();
  } 
  
  

}

3、后台访问，可以做其他服务客户端进行【服务名称访问】=MemberService

package com.ml0115.service;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;

@Service
public class MemberService {
  @Autowired
  RestTemplate restTemplate;

  public List<String> getOrderByUserList() {
    return restTemplate.getForObject("http://service-member/getUserList", List.class);
  } 
  
  @HystrixCommand(fallbackMethod = "orderError")
  public List<String> getOrderUserAll() {
  return restTemplate.getForObject("http://service-member/getMemberAll", List.class);
  }

  public List<String> orderError() {
    List<String> listUser = new ArrayList<String>();
    listUser.add("not orderUser list");
    return listUser;
  }
}

 4.application.yml配置信息

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8888/eureka/
server:
  port: 8764
spring:
  application:
    name: service-order

5.pom配置，我使用的是Eclipse，当然Ideal也可以，自动的识别，有些时候没有配置版本号会运行出现错误。

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.2.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
  </parent>
  <groupId>com.test</groupId>
  <artifactId>sercice-order</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>sercice-order</name>
  <description>目前状态不要</description>

  <properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
       
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-hystrix</artifactId>
       <version>1.4.7.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-tomcat</artifactId>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupId>org.junit.vintage</groupId>
          <artifactId>junit-vintage-engine</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-ribbon</artifactId>
      <version>1.4.7.RELEASE</version>
    </dependency>

  </dependencies>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>${spring-cloud.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>

</project>

运行访问测试地址：

http://localhost:8888/testString
http://localhost:8888/
http://localhost:8765/getOrderByUserList
http://localhost:8769/actuator/info
http://127.0.0.1:8769/api-member/getUserList?token=1224
http://localhost:8764/getOrderByUserList
http://localhost:8762/getUserList