使用IDEA搭建SpringCloud项目

创建Eurake Server

1、选中项目右击–>New–>Module

勾选Web->Spring Web

勾选Spring Cloud Discovery->Eureka Server

2、修改application.properties文件

server.port=8761
eureka.instance.hostname=localhost
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.service-url.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/

3、修改启动类DemocloudApplication

添加@EnableEurekaServer，该注解表明标注类是一个Eureka Server。

@SpringBootApplication
@EnableEurekaServer
public class DemocloudApplication {public static void main(String[] args) {SpringApplication.run(DemocloudApplication.class, args);}
}

4、启动项目

在浏览器中输入http://localhost:8761/

创建生产者

1、勾选Spring Cloud Discovery->Eureka Discovery Client

2、修改application.properties文件

server.port=7901
spring.application.name=demo-user
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
logging.level.root=INFO

3、修改启动类DemoclientApplication

添加@EnableEurekaClient，该注解表明标注类是一个生产者。

@SpringBootApplication
@EnableEurekaClient
public class DemoclientApplication {public static void main(String[] args) {SpringApplication.run(DemoclientApplication.class, args);}
}

4、创建Controller

@RestController
@RequestMapping("/user")
public class UserController {@RequestMapping("/sayHello")public String sayhello(){return "I`m provider 1 ,Hello consumer!";}
}

5、运行服务

在浏览器中输入http://localhost:7901/user/sayHello

创建消费者

1、勾选Spring Cloud Discovery->Eureka Discovery Client

2、修改application.properties文件

server.port=7902
spring.application.name=demo-guest
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
logging.level.root=INFO

3、修改启动类DemoguestApplication

添加@EnableDiscoveryClient，该注解表明标注类是一个消费者。

@SpringBootApplication
@EnableDiscoveryClient
public class DemoguestApplication {public static void main(String[] args) {SpringApplication.run(DemoguestApplication.class, args);}@Bean@LoadBalancedpublic RestTemplate restTemplate(){return new RestTemplate();}
}

4、创建Controller

@RestController
public class GuestController {@Autowiredprivate RestTemplate restTemplate;@RequestMapping("/hello")public String hello(){//服务地址 http://{服务提供者应用名名称}/{具体的controller}String url="http://DEMO-USER/user/sayHello";//返回值类型和我们的业务返回值一致return restTemplate.getForObject(url, String.class);}
}

5、运行服务

在浏览器中输入http://localhost:7902/hello