Feign二： @FeignClient 接口调用

在项目的启动文件加入：@EnableFeignClients 注解，

import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;import org.springframework.cloud.netflix.feign.EnableFeignClients;import org.springframework.context.annotation.Bean;import org.springframework.web.client.RestTemplate;@EnableEurekaClient@SpringBootApplication@EnableFeignClientspublic class FeignApp {	public static void main(String[] args) {		SpringApplication.run(FeignApp.class, args);	}}

　　

实例结构如下：

 

 

 

 

那么有实体类: User.java

Fengn客户端：UserFeignClient.java

控制器: MovieController.java调取第三方user接口

 

User.java

import java.math.BigDecimal;public class User {	private  Long id;		private String useame;		private String name;		private int age;		private BigDecimal balance;	public Long getId() {		retu id;	}	public void setId(Long id) {		this.id = id;	}	public String getUseame() {		retu useame;	}	public void setUseame(String useame) {		this.useame = useame;	}	public String getName() {		retu name;	}	public void setName(String name) {		this.name = name;	}	public int getAge() {		retu age;	}	public void setAge(int age) {		this.age = age;	}	public BigDecimal getBalance() {		retu balance;	}	public void setBalance(BigDecimal balance) {		this.balance = balance;	}					}

　　

UserFeign客户端

其中：@FeignClient("spring-boot-user")： spring-boot-user是eureka服务里面user项目的名称，加入此注解，能直接连接user项目接口

import org.springframework.cloud.netflix.feign.FeignClient;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.muyang.bootmovie.entity.User;@FeignClient("spring-boot-user")public interface UserFeignClient {	// 两个坑：1. @GetMapping不支持2. @PathVariable得设置value	@RequestMapping(value="/simple/{id}", method=RequestMethod.GET)	public User findById(@PathVariable("id") Long id);		@RequestMapping(value="/test", method=RequestMethod.POST)	public User postUser(@RequestBody User user);}

　　

MovieController控制中心，调取UserFeign客户端

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import com.muyang.bootmovie.entity.User;import com.muyang.bootmovie.feign.UserFeignClient;@RestControllerpublic class MovieController {	@Autowired	private UserFeignClient userFeignClient;		@GetMapping("/movie/{id}")	public User findById(@PathVariable("id") Long id) {		retu this.userFeignClient.findById(id);	}		@RequestMapping(value="/test", method=RequestMethod.GET)	public User userPost(User user)	{		retu this.userFeignClient.postUser(user);			}}