1、spring cloud服务注册中心eureka---服务提供者(第二章)

服务提供

我们假设服务提供者有一个hello方法，可以根据传入的参数，提供输出“hello xxx，this is first messge”的服务

1、pom包配置
创建一个springboot项目，pom.xml中添加如下配置：

<?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.llx.springcloud</groupId>
	<artifactId>spring-cloud-producer</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>
	<name>spring-cloud-producer</name>
	<description>Demo project for Spring Boot</description>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.0.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.M1</spring-cloud.version>
	</properties>
	<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-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</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>
	<repositories>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>
</project>

2、配置文件
application.properties配置如下：

spring.application.name=spring-cloud-producer-one
server.port=9001
eureka.client.serviceUrl.defaultZone=http://localhost:8888/eureka/

参数在上一篇都已经解释过，这里不多说。

3、启动类
启动类中添加@EnableDiscoveryClient注解

@SpringBootApplication
@EnableDiscoveryClient
public class ProducerApplication {

	public static void main(String[] args) {
		SpringApplication.run(ProducerApplication.class, args);
	}
}

4、controller
提供hello服务

@RestController
public class HelloController {
	
    @RequestMapping("/hello")
    public String index(@RequestParam String name) {
        return "hello "+name+"，this is first messge";
    }
}

添加@EnableDiscoveryClient注解后，项目就具有了服务注册的功能。启动工程后，就可以在注册中心的页面看到SPRING-CLOUD-PRODUCER-ONE服务。