SpringCloud(二)註冊服務提供者搭建

上文已經寫了如何去搭建註冊中心,僅有註冊中心是遠遠不夠的,因此咱們須要註冊到註冊中心並提供服務的節點,這裏稱爲註冊服務提供者html

前提

閱讀上文,併成功搭建註冊中心,環境無需改變java

項目搭建

這裏咱們須要新建一個maven項目,項目名稱以前沒有起好,這裏就參考一下,個人是SpringCloudDemo,不要在乎這些細節!git

修改pom文件,參考以下:github

注意:請看好這些jar包的版本號,文末我會貼出以前我搭建的兩個比較簡單的demo的github路徑web

<?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>
        <!--用於監控項目,提供項目中的狀態信息-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--junit測試-->
        <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>

雖然版本號不一樣於EurekaServer註冊中心項目,可是經實踐是能夠正常使用的,請放心spring

新建一個啓動類(每一個springboot項目中都有)apache

 1 package com.hellxz.springcloudhelloworld;  2 
 3 import org.springframework.boot.SpringApplication;  4 import org.springframework.boot.autoconfigure.SpringBootApplication;  5 import org.springframework.cloud.client.discovery.EnableDiscoveryClient;  6 
 7 /**
 8  * @Author : Hellxz  9  * @Description: EurekaClient 10  * @Date : 2018/4/13 16:57 11  */
12 @EnableDiscoveryClient 13 @SpringBootApplication 14 public class SpringCloudDemoApplication { 15 
16     public static void main(String[] args) { 17         SpringApplication.run(SpringCloudDemoApplication.class, args); 18  } 19 }

新建一個controller類,留做以後測試springboot

 1 package com.hellxz.springcloudhelloworld;  2 
 3 import org.apache.log4j.Logger;  4 import org.springframework.beans.factory.annotation.Autowired;  5 import org.springframework.cloud.client.ServiceInstance;  6 import org.springframework.cloud.client.discovery.DiscoveryClient;  7 import org.springframework.web.bind.annotation.RequestMapping;  8 import org.springframework.web.bind.annotation.RequestMethod;  9 import org.springframework.web.bind.annotation.RestController; 10 
11 /**
12  * @Author : Hellxz 13  * @Description: 服務提供者 14  * @Date : 2018/4/12 11:36 15  */
16 @RestController 17 public class SpringbootController { 18 
19  @Autowired 20     private DiscoveryClient client; //注入發現客戶端
21 
22     private final Logger logger = Logger.getLogger(SpringbootController.class); 23 
24     @RequestMapping(value = "/hello", method = RequestMethod.GET) 25     public String hello(){ 26         //獲取服務實例,做用爲以後console顯示效果
27         ServiceInstance serviceInstance = client.getLocalServiceInstance(); 28         logger.info("/hello host:"+serviceInstance.getHost()+" service_id:" +serviceInstance.getServiceId()); 29         return "hello"; 30  } 31 }

在src/resources文件夾下建立application.yml 此次使用yaml進行配置,若是想嘗試properties文件方式,請參考上文,此處配置的提供服務地址請參考註冊中心的配置app

server: port: 8080 spring: application: name: hello-service eureka: client: serviceUrl: defaultZone: http://localhost:1111/eureka/

好了,咱們將這個項目跑在8080端口,並能夠去註冊中心註冊服務了maven

先啓動註冊中心的項目,待其啓動完畢以後,在來啓動本項目。

測試

輸入註冊中心的url查看:localhost:1111

 

 訪問剛纔配置的controller路徑: http://localhost:8080/hello

 

 如右圖所示,註冊成功。

此時咱們就能夠使用這個項目進行提供服務了

 

示例demo:

    https://github.com/HellxZ/EurekaServer

    https://github.com/HellxZ/EurekaClient

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