SpringCloud配置Feign案例

电玩女神 2022-02-25 03:20 208阅读 0赞

### 一、引入相关jar ###

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-feign</artifactId>
    </dependency>

### 二、在公共接口微服务模块创建公用接口并申明为@FeignClient ###

@FeignClient(value = "MICROSERVICECLOUD-DEPT")
    public interface DeptClientService {
    	@RequestMapping(value = "/dept/get/{id}", method = RequestMethod.GET)
    	public Dept get(@PathVariable("id") long id);
    
    	@RequestMapping(value = "/dept/list", method = RequestMethod.GET)
    	public List<Dept> list();
    
    	@RequestMapping(value = "/dept/add", method = RequestMethod.POST)
    	public boolean add(Dept dept);
    }

### 三、在引用公用接口的微服务模块中的启动类中添加Feign相关注解 ###

@SpringBootApplication
    @EnableEurekaClient//开启Eureka客户端
    @EnableFeignClients(basePackages= {"com.zhq.springcloud"})
    @ComponentScan("com.zhq.springcloud")
    public class DeptConsumer80_Feign_App {
    
    	public static void main(String[] args) {
    		
    		SpringApplication.run(DeptConsumer80_Feign_App.class, args);
    	}
    
    }

### 四、引用所编写的接口  ###

package com.zhq.springcloud.controller;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.zhq.springcloud.entities.Dept;
    import com.zhq.springcloud.service.DeptClientService;
    
    @RestController
    public class DeptController_Consumer {
    
    	@Autowired
    	private DeptClientService service = null;
    
    	@RequestMapping(value = "/consumer/dept/get/{id}")
    	public Dept get(@PathVariable("id") Long id) {
    		return this.service.get(id);
    	}
    
    	@RequestMapping(value = "/consumer/dept/list")
    	public List<Dept> list() {
    		return this.service.list();
    	}
    
    	@RequestMapping(value = "/consumer/dept/add")
    	public Object add(Dept dept) {
    		return this.service.add(dept);
    	}
    
    }