Spring Cloud 服务提供者

本文主要是介绍Spring Cloud 服务提供者，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

服务提供者是为其他系统提供服务的一方，服务提供者通过加入Eureka的服务治理体系中为服务消费者提供服务。

1、搭建项目

使用IDEA创建一个Spring Boot 项目spring-cloud-provider，该项目集成spring-cloud-parent父项目。
项目POM文件内容为：

<?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><groupId>com.chq.demo.spring-cloud</groupId><artifactId>spring-cloud-provider</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>spring-cloud-provider</name><description>Demo project for Spring Boot</description><parent><groupId>com.chq.demo.spring-cloud</groupId><artifactId>spring-cloud-parent</artifactId><version>0.0.1-SNAPSHOT</version></parent><dependencies><!-- 添加Eureka的依赖 --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-eureka</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency></dependencies></project>

2、配置application.yml文件

server:port: 8081
spring:application:name: spring-cloud-provider # 项目名称尽量用小写
eureka:client:serviceUrl:defaultZone: http://127.0.0.1:8001/eureka/ # 指定注册中心地址instance:preferIpAddress: true

3、创建一个实体类

public class UserEntity{private Long id;private String username;private String password;public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}
}

4、创建一个Controller

@RestController
public class ProviderController {@GetMapping("/{id}")public UserEntity getUser(@PathVariable Long id) {UserEntity entity = new UserEntity();entity.setId(id);entity.setUsername("张三");entity.setPassword("123456");return entity;}}

5、服务注册到Eureka

修改Spring Boot启动程序，通过@EnableDiscoveryClient注解，即可将spring-cloud-provider服务注册到Eureka上面去

@SpringBootApplication
@EnableDiscoveryClient
public class SpringCloudProviderApplication {public static void main(String[] args) {SpringApplication.run(SpringCloudProviderApplication.class, args);}
}