SpringCloud Eureka服務註冊與發現 --簡單使用

今天我們來講解一下Spring Cloud的Eureka組件的使用

1、建立Maven主項目

在主項目pom.xml加入以下依賴

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Hoxton.SR3</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

2、建立Eureka服務端模塊

第一步，新建Spring Boot模塊

File-->New-->Module-->springInitializr-->勾選Eureka Server -->OK

Eureka服務端pom.xml依賴如下

	<dependencies>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.1.2</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Hoxton.SR3</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

第二步，在Eureka服務端的application.properties文件里加入以下代碼

server.port=8771
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.serviceUrl.defaultZone=http://localhost:8771/eureka/
spring.application.name=EurekaService

第三步，給Application類添加@EnableEurekaServer註解

3、建立Eureka客戶端

第一步，新建Spring Boot模塊

File-->New-->Module-->springInitializr-->勾選Eureka Discovery Client -->OK

Eureka客戶端pom.xml依賴如下

	<dependencies>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.1.2</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Hoxton.SR3</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

第二步，在Eureka客戶端的application.properties文件里加入以下代碼

server.port=8772
eureka.client.serviceUrl.defaultZone=http://localhost:8771/eureka/
spring.application.name=commonservice

第三步，給Application類添加@EnableEurekaClient註解

4、啓動Eureka服務端和客戶端

最終效果圖