springcloud是基于springboot搭建的微服务。它利用spring boot的开发便利性巧妙地简化了分布式系统基础设施的开发,如服务发现注册、配置中心、消息总线、负载均衡、断路器、数据监控等,都可以用spring boot的开发风格做到一键启动和部署。
spring cloud官方文档:
spring cloud 中文网 :
最终搭建后的工程源代码:https://github.com/onpwerb/springcloud
一、新建maven工程
根据spring cloud官方文档,在pom.xml导入如下代码
<!-- spring cloud 配置 --> <parent> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</artifactid> <version>1.4.5.release</version> </parent> <dependencymanagement> <dependencies> <dependency> <groupid>org.springframework.cloud</groupid> <artifactid>spring-cloud-dependencies</artifactid> <version>camden.sr6</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencymanagement> <dependencies> <dependency> <groupid>org.springframework.cloud</groupid> <artifactid>spring-cloud-starter-config</artifactid> </dependency> <dependency> <groupid>org.springframework.cloud</groupid> <artifactid>spring-cloud-starter-eureka</artifactid> </dependency>
二、建立注册中心
新建名称为 discovery 的 module
1.在该module下的pom.xml导入如下配置:
<!-- @enableeurekaserver --> <dependencies> <dependency> <groupid>org.springframework.cloud</groupid> <artifactid>spring-cloud-netflix-eureka-server</artifactid> <!--<version>1.1.6.release</version>--> </dependency> </dependencies>
2.在src/main/java目录下新建discovery文件夹,然后新建一个application
package discovery; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.cloud.netflix.eureka.server.enableeurekaserver; @springbootapplication @enableeurekaserver public class discoveryapplicaion { public static void main(string[] args) { springapplication.run(discoveryapplicaion.class, args); } }
3.在该module下的src/main/resources文件夹下,新建文件application.yml,配置注册中心eureka的相关服务
server: port: 8081 eureka: instance: hostname: localhost client: registerwitheureka: false fetchregistry: false serviceurl: defaultzone: http://${eureka.instance.hostname}:${server.port}/eureka/
三、构建一个服务a
新建一个名为service的module
1.在src/main/java目录下新建service文件夹,然后新建一个application
package service; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.cloud.client.discovery.enablediscoveryclient; import org.springframework.web.bind.annotation.getmapping; import org.springframework.web.bind.annotation.restcontroller; @springbootapplication @enablediscoveryclient @restcontroller public class serviceapplication { @getmapping("/service") public string service(){ return "service"; } public static void main(string[] args) { springapplication.run(serviceapplication.class, args); } }
2.在该module下的src/main/resources文件夹下,新建文件application.yml
spring: application: name: service.service eureka: client: serviceurl: defaultzone: http://localhost:8081/eureka/ server: port: 8082
四、构建第二个服务b
新建一个名为service2的module
1.在src/main/java目录下新建service2文件夹,然后新建一个application
package service2; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.cloud.client.discovery.enablediscoveryclient; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.restcontroller; @springbootapplication @enablediscoveryclient @restcontroller public class service2application { @requestmapping("/service2") public string service2(){ return "service2"; } public static void main(string[] args) { springapplication.run(service2application.class, args); } }
2.在该module下的src/main/resources文件夹下,新建文件application.yml
spring: application: name: service2 eureka: client: serviceurl: defaultzone: http://localhost:8081/eureka/ server: port: 8083
五、配置网关
新建名称为 gateway 的 module
1.在该module下的pom.xml导入如下配置:
package gateway; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.cloud.netflix.eureka.enableeurekaclient; import org.springframework.cloud.netflix.zuul.enablezuulproxy; @springbootapplication @enablezuulproxy @enableeurekaclient public class gatewayapplication { public static void main(string[] args) { springapplication.run(gatewayapplication.class, args); } }
2.在src/main/java目录下新建gateway文件夹,然后新建一个application
eureka: client: serviceurl: defaultzone: http://localhost:8081/eureka/ spring: application: name: gateway server: port: 8084 zuul: routes: service: /service/** service2: /service2/**
3.在该module下的src/main/resources文件夹下,新建文件application.yml
六、启动服务
先启动discovery模块,再启动其他模块
在浏览器依次输入:
http://localhost:8081/
http://localhost:8082/service
http://localhost:8083/service2
http://localhost:8084/service/service
http://localhost:8084/service2/service2
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