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

怼烎@ 2022-04-18 00:45 230阅读 0赞

### 服务提供    ###

本文中示例代码的引用版本：  
org.springframework.boot 版本 ：2.1.0.RELEASE  
org.springframework.cloud 版本：Greenwich.M1  
[示例代码-码云][-] [https://gitee.com/sharps/springcloud][-]

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/> 
    	</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。

[-]: https://gitee.com/sharps/springcloud