上文已经写了如何去搭建注册中心,仅有注册中心是远远不够的,所以我们需要注册到注册中心并提供服务的节点,这里称为注册服务提供者
前提
阅读上文,并成功搭建注册中心,环境无需改变
项目搭建
这里我们需要新建一个maven项目,项目名称之前没有起好,这里就参考一下,我的是springclouddemo,不要在意这些细节!
修改pom文件,参考如下:
注意:请看好这些jar包的版本号,文末我会贴出之前我搭建的两个比较简单的demo的github路径
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<?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.hellxz</groupid>
<artifactid>springclouddemo</artifactid>
<version> 0.0 . 1 -snapshot</version>
<packaging>jar</packaging>
<name>springclouddemo</name>
<description>demo project for spring boot</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>
<dependencymanagement>
<dependencies>
<dependency>
<groupid>org.springframework.cloud</groupid>
<artifactid>spring-cloud-dependencies</artifactid>
<version>camden.sr3</version>
<type>pom</type>
<scope> import </scope>
</dependency>
</dependencies>
</dependencymanagement>
<properties>
<project.build.sourceencoding>utf- 8 </project.build.sourceencoding>
<project.reporting.outputencoding>utf- 8 </project.reporting.outputencoding>
<java.version> 1.8 </java.version>
</properties>
<dependencies>
<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>
<!--用于监控项目,提供项目中的状态信息-->
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-actuator</artifactid>
</dependency>
<!--junit测试-->
<dependency>
<groupid>junit</groupid>
<artifactid>junit</artifactid>
<version> 4.8 . 2 </version>
</dependency>
<dependency>
<groupid>org.springframework.cloud</groupid>
<artifactid>spring-cloud-starter-eureka</artifactid>
</dependency>
<dependency>
<groupid>org.springframework.cloud</groupid>
<artifactid>spring-cloud-config-server</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-maven-plugin</artifactid>
</plugin>
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-compiler-plugin</artifactid>
<configuration>
<source> 1.8 </source>
<target> 1.8 </target>
</configuration>
</plugin>
</plugins>
</build>
</project>
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虽然版本号不同于eurekaserver注册中心项目,但是经实践是可以正常使用的,请放心
新建一个启动类(每个springboot项目中都有)
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package com.hellxz.springcloudhelloworld;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.cloud.client.discovery.enablediscoveryclient;
/**
* @author : hellxz
* @description: eurekaclient
* @date : 2018/4/13 16:57
*/
@enablediscoveryclient
@springbootapplication
public class springclouddemoapplication {
public static void main(string[] args) {
springapplication.run(springclouddemoapplication. class , args);
}
}
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新建一个controller类,留作之后测试
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package com.hellxz.springcloudhelloworld;
import org.apache.log4j.logger;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.cloud.client.serviceinstance;
import org.springframework.cloud.client.discovery.discoveryclient;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.requestmethod;
import org.springframework.web.bind.annotation.restcontroller;
/**
* @author : hellxz
* @description: 服务提供者
* @date : 2018/4/12 11:36
*/
@restcontroller
public class springbootcontroller {
@autowired
private discoveryclient client; //注入发现客户端
private final logger logger = logger.getlogger(springbootcontroller. class );
@requestmapping (value = "/hello" , method = requestmethod.get)
public string hello(){
//获取服务实例,作用为之后console显示效果
serviceinstance serviceinstance = client.getlocalserviceinstance();
logger.info( "/hello host:" +serviceinstance.gethost()+ " service_id:" +serviceinstance.getserviceid());
return "hello" ;
}
}
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在src/resources文件夹下创建application.yml 这次使用yaml进行配置,如果想尝试properties文件方式,请参考上文,此处配置的提供服务地址请参考注册中心的配置
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server:
port: 8080
spring:
application:
name: hello-service
eureka:
client:
serviceurl:
defaultzone:
http: //localhost:1111/eureka/
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好了,我们将这个项目跑在8080端口,并可以去注册中心注册服务了
先启动注册中心的项目,待其启动完毕之后,在来启动本项目。
测试
输入注册中心的url查看:localhost:1111
访问刚才配置的controller路径: http://localhost:8080/hello
如右图所示,注册成功。
此时我们就可以使用这个项目进行提供服务了
示例demo:
https://github.com/hellxz/eurekaserver
https://github.com/hellxz/eurekaclient
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/hellxz/p/8855417.html