SpingCloud 2020微服务教程【6】EurekaServer模块搭建_com.antherd

视频链接：2020最新版SpringCloud框架开发教程-周阳
文章源码：https://github.com/geyiwei-suzhou/cloud2020/

cloud-eureka-server7001 Eureka Server模块
微服务模块
1. 建module
New --> Module --> Maven[Module SDK:1.8.0_191] --> name[cloud-eureka-server7001] --> Finish
2. 改pom
Spring Cloud老版本：

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
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Spring Cloud Hoxton版：

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
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<?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>cloud2020</artifactId>
    <groupId>com.antherd.springcloud</groupId>
    <version>1.0-SNAPSHOT</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>

  <artifactId>cloud-eureka-server7001</artifactId>

  <dependencies>
    <!--eureka-server-->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    </dependency>
    <!--引入公共api包-->
    <dependency>
      <groupId>com.antherd.springcloud</groupId>
      <artifactId>cloud-api-commons</artifactId>
      <version>${project.version}</version>
    </dependency>
    <!-- boot web actuator-->
    <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>
    <!-- 一般通用配置-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-devtools</artifactId>
      <scope>runtime</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>

</project>
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3. 写yml

server:
  port: 7001
eureka:
  instance:
    hostname: localhost #eureka服务端的实例名称
  client:
    register-with-eureka: false #false表示不向注册中心注册自己
    fetch-registry: false #false表示自己就是注册中心，职责就是维护服务实例，不需要检索服务
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/ #设置与Eureka Server交互的地址查询服务和注册服务都需要依赖这个地址
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4. 主启动
新建类：com.antherd.springcloud.EurekaMain7001

package com.antherd.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class EurekaMain7001 {

  public static void main(String[] args) {

    SpringApplication.run(EurekaMain7001.class, args);
  }
}
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5 写业务
5.1 entities
新建类： com.antherd.springboot.entities.Payment

package com.antherd.springcloud.entities;
	
import java.io.Serializable;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {

  private Long id;
  private String serial;
}
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新建类：com.antherd.springboot.entities.CommonResult

package com.antherd.springcloud.entities;
	
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {

  private Integer code;
  private String message;
  private T data;

  public CommonResult(Integer code, String message) {
    this(code, message, null);
  }
}
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5.2 RestTemplate

RestTemplate提供了多种便捷访问远程Http服务的方法，是一种简单便捷的访问restful服务末模板类，是Spring提供的用于访问Rest服务的客户端模板工具集。RestTemplate官方文档

新建类：com.antherd.springcloud.config.ApplicationContextConfig

package com.antherd.springcloud.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ApplicationContextConfig {

  @Bean
  public RestTemplate getRestTemplate() {
    return new RestTemplate();
  }
}

// applicationContext.xml <bean id="" class="">
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5.2 controller
新建类：com.antherd.springboot.contorller.OrderController

package com.antherd.springcloud.contorller;

import com.antherd.springcloud.entities.CommonResult;
import com.antherd.springcloud.entities.Payment;
import javax.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@Slf4j
public class OrderController {

  private  static final String PAYMENT_URL = "http://localhost:8001";

  @Resource
  private RestTemplate restTemplate;

  @PostMapping("/consumer/payment")
  public CommonResult<Payment> create(Payment payment) {
    return restTemplate.postForObject(PAYMENT_URL + "/payment", payment, CommonResult.class);
  }

  @GetMapping("/consumer/payment/{id}")
  public CommonResult<Payment> getPayment(@PathVariable Long id) {
    return restTemplate.getForObject(PAYMENT_URL + "/payment/" + id, CommonResult.class);
  }
}
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6. 启动测试
浏览器输入：localhost:7001