一、 eureka client说明：
Eureka客户端是一个java客户端，用来简化与服务器的交互、作为轮询负载均衡器，并提供服务的故障切换支持。Netflix在其生产环境中使用的是另外的客户端，它提供基于流量、资源利用率以及出错状态的加权负载均衡
二、创建一个服务提供者
0.项目结构:
image.png
- 创建一个像cloud-client项目，创建完pom.xml文件如下:
<?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/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.cloud.client</groupId>
<artifactId>client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>client</name>
<description>this spring-boot client</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.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>Edgware.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</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>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
2.application.properties 配置文件如下：
spring.application.name:这个名字很重要的，以后服务与服务之间调用根据这个名字
eureka.client.serviceUrl.defaultZone:服务注册中心
server.port=8762
spring.application.name=service-hi
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
2.通过注解@EnableEurekaClient表明自己是一个eurekaclient
@SpringBootApplication
@EnableEurekaClient
public class ClientApplication {
public static void main(String[] args) {
SpringApplication.run(ClientApplication.class, args);
}
}
3.创建一个controller包下面创建一个 TestController
@RestController
public class TestController {
@Value("${server.port}")
String port;
@RequestMapping("/hi")
@ResponseBody
public String home(@RequestParam String name) {
return "hi "+name+",i am from port:" +port;
}
}
4：打开浏览器：输入服务注册中心:http://localhost:8761，这时候出现一个服务提供者：
image.png
5：打开浏览器输入：http://localhost:8762/hi?name=forezp 看到浏览器为：
image.png
三、源码下载
https://gitee.com/biaoxinwebstorm/cloud-client.git
https://github.com/yangliu123/cloud-client.git
