# 创建服务提供者
# 概述
当 Client 向 Server 注册时，它会提供一些元数据，例如主机和端口，URL，主页等。Eureka Server 从每个 Client 实例接收心跳消息。 如果心跳超时，则通常将该实例从注册 Server 中删除。
# POM
<?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>
<parent>
<groupId>com.starmcc</groupId>
<artifactId>hello-spring-cloud-dependencies</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../hello-spring-cloud-dependencies/pom.xml</relativePath>
</parent>
<artifactId>hello-spring-cloud-service-admin</artifactId>
<packaging>jar</packaging>
<name>hello-spring-cloud-service-admin</name>
<url>http://www.starmcc.com</url>
<inceptionYear>2019-Now</inceptionYear>
<dependencies>
<!-- Spring Boot Begin -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Boot End -->
<!-- Spring Cloud Begin -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<!-- Spring Cloud End -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.funtl.hello.spring.cloud.service.admin.ServiceAdminApplication</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
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# Application
@SpringBootApplication
@EnableEurekaClient
public class ServiceAdminApplication {
public static void main(String[] args) {
SpringApplication.run(ServiceAdminApplication.class, args);
}
}
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# application.yml
spring:
application:
name: hello-spring-cloud-service-admin
server:
port: 8762
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
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注意： 需要指明 spring.application.name，这个很重要，这在以后的服务与服务之间相互调用一般都是根据这个 name
# Controller
@RestController
public class AdminController {
@Value("${server.port}")
private String port;
@RequestMapping(value = "hi", method = RequestMethod.GET)
public String sayHi(@RequestParam(value = "message") String message) {
return String.format("Hi，your message is : %s i am from port : %s", message, port);
}
}
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启动工程，打开 http://localhost:8761 ，即 Eureka Server 的网址：
你会发现一个服务已经注册在服务中了，服务名为 HELLO-SPRING-CLOUD-SERVICE-ADMIN ,端口为 8762
这时打开 http://localhost:8762/hi?message=HelloSpring ，你会在浏览器上看到 :
Hi，your message is :"HelloSpring" i am from port：8762
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