SpringCloud从入门到精通教程（二）- 服务提供者

绝地灬酷狼 2023-02-26 01:05 8阅读 0赞

# 需求背景 #

> 服务提供者

# Tips技术点 #

1.** **@EnableEurekaClient注解

*  表示这是一个Eureka客户端程序

2. 配置application.yml中eureka属性值

*  比如填写Eureka注册中心地址等

# **代码演示** #

## 1. 项目目录结构 ##

**![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70][]**

## 2. pom.xml依赖组件 ##

<?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">
    	<modelVersion>4.0.0</modelVersion>
    
    	<artifactId>microservice-provider-user</artifactId>
    	<packaging>jar</packaging>
    
    	<parent>
    		<groupId>com.minbo.cloud</groupId>
    		<artifactId>spring-cloud-microservice-study</artifactId>
    		<version>0.0.1-SNAPSHOT</version>
    	</parent>
    
    	<dependencies>
    		
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    		</dependency>
    		<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>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-zipkin</artifactId>
    		</dependency>
    	</dependencies>
    </project>

## 3. application.yml配置文件 ##

server:
       port: 8000
    spring:
       application:
          name: microservice-provider-user # 项目名称尽量用小写
    eureka:
       # 配置开启健康检查
       client:
          healthcheck:
             enabled: true
          serviceUrl:
             defaultZone: http://localhost:8761/eureka/ # 指定注册中心的地址
       instance:
          # IP地址优先
          preferIpAddress: true
          # 按需配置续约更新时间和到期时间
          lease-expiration-duration-in-seconds: 30
          lease-renewal-interval-in-seconds: 10

注：spring.application.name是注册服务名，非常重要。服务消费者是通过此名称调用该服务提供者

## 4. 接口类（测试提供的方法） ##

package com.minbo.cloud.study.controller;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class HiController {
    
    	@Value("${server.port}")
    	String port;
    
    	// 提供的方法
    	@RequestMapping("/hi")
    	public String hi(@RequestParam(value = "name", defaultValue = "minbo") String name) {
    		String result = "hi " + name + " , i am from port:" + port;
    		System.out.println(result);
    		return result;
    	}
    }

## 5. 启动类 ##

添加@EnableEurekaClient注解

package com.minbo.cloud.study;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    public class UserApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(UserApplication.class, args);
    	}
    
    }

## 6. 是否注册成功 ##

查看Eureka界面，可以看到该服务提供者已经成功注册进来了

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 1][]

# 完整源码下载 #

我的[Github源码地址：][Github]

[https://github.com/hemin1003/spring-cloud-study/tree/master/spring-cloud-greenwich/microservice-provider-user][https_github.com_hemin1003_spring-cloud-study_tree_master_spring-cloud-greenwich_microservice-provider-user]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 2][]

# 上一章教程 #

[SpringCloud从入门到精通教程（一）- 服务的注册与发现(Eureka)][SpringCloud_- _Eureka]

# 下一章教程 #

[SpringCloud从入门到精通教程（三）- 服务消费者，实现方式一(ribbon)][SpringCloud_- _ribbon]

# 该系列教程 #

[SpringCloud从入门到精通教程][SpringCloud]

# 我的专栏 #

*  [SpringBoot系列专栏][SpringBoot]
 *  [SpringCloud系列专栏][SpringCloud]
 *  [高可用高并发实战][Link 1][专栏][Link 2]
 *  [微服务架构实战][Link 3]
 *  [DevOps实战专栏][DevOps]
 *  [程序化广告实战专栏][Link 2]

至此，全部介绍就结束了

\-------------------------------

[我的CSDN主页][CSDN]

[关于我][Link 4]（个人域名）

[我的开源项目集Github][Github 1]

期望和大家***一起学习，一起成长***，共勉，O(∩\_∩)O谢谢

欢迎交流问题，可加个人QQ 469580884，

或者，加我的群号 **751925591**，一起探讨交流问题

不讲虚的，只做实干家

Talk is cheap，show me the code

![20180411181545874][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70]: /images/20230209/5cd61868753948a6b59e129502e039bd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200713163230703.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw==,size_16,color_FFFFFF,t_70
[Github]: https://github.com/hemin1003/spring-cloud-study/tree/master/spring-cloud-greenwich/
[https_github.com_hemin1003_spring-cloud-study_tree_master_spring-cloud-greenwich_microservice-provider-user]: https://github.com/hemin1003/spring-cloud-study/tree/master/spring-cloud-greenwich/microservice-provider-user
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200713182817135.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hlbWluMTAwMw==,size_16,color_FFFFFF,t_70
[SpringCloud_- _Eureka]: https://hemin.blog.csdn.net/article/details/107317235
[SpringCloud_- _ribbon]: https://hemin.blog.csdn.net/article/details/107320219
[SpringCloud]: https://blog.csdn.net/hemin1003/category_9293625.html
[SpringBoot]: https://blog.csdn.net/hemin1003/article/category/9291077
[Link 1]: https://blog.csdn.net/hemin1003/article/category/9292134
[Link 2]: https://blog.csdn.net/hemin1003/article/category/9290971
[Link 3]: https://blog.csdn.net/hemin1003/article/category/9292162
[DevOps]: https://blog.csdn.net/hemin1003/article/category/9292130
[CSDN]: https://blog.csdn.net/hemin1003
[Link 4]: http://heminit.com/about/
[Github 1]: https://github.com/hemin1003
[20180411181545874]: https://img-blog.csdn.net/20180411181545874