<groupId>com.etc</groupId>
<artifactId>spring-cloud-eureka-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-cloud-eureka-client</name>
二、創建完之後,項目如下:
<?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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.etc</groupId>
<artifactId>spring-cloud-eureka-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-cloud-eureka-client</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.M3</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<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>
</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>
三、修改配置文件,刪除application.properties文件,新建application.yml文件
server:
port:
8762
spring:
application:
name:
service-hello #服務名爲 service-hello,將會被調用者使用
eureka:
client:
service-url:
defaultZone:
http://localhost:8761/eureka/
注意:application.yml的格式一定要注意,格式不正確時,啓動報錯如下:
package com.etc.springcloudeurekaclient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
* Eureka客戶端,提供服務,進行服務註冊
* @EnableEurekaClient 和@EnableDiscoveryClient共同點就是:都是能夠讓註冊中心發現,掃描到該服務。
* 不同點:@EnableEurekaClient只適用於Eureka作爲註冊中心,@EnableDiscoveryClient可以是其他註冊中心。
*/
@EnableEurekaClient //表示他是一個 Eureka 客戶端,它會在註冊中心註冊自己
@SpringBootApplication
public class SpringCloudEurekaClientApplication {
public static void main(String[] args) {
SpringApplication.run(SpringCloudEurekaClientApplication.class, args);
}
}
五、新建一個Controller類,定義一個方法
package com.etc.springcloudeurekaclient.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 HelloController {
@Value("${server.port}")
String port;
@RequestMapping("/hello")
public String hello(@RequestParam(value="name",defaultValue = "zoey") String name){
return "hello "+name+",i am port:"+port;
}
}
六、啓動完成
eureka:
client:
register-with-eureka: false
fetch-registry: false
service-url:
defaultZone:
http://${eureka.instance.hostname}:${server.port}/eureka/
客戶端要正常啓動,首先要保證註冊中心的代碼是正確的,可以正常啓動的