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
@EnableFeignClients
public 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 username;

	private String name;

	private int age;

	private BigDecimal balance;

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public BigDecimal getBalance() {
		return 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;

@RestController
public class MovieController {

	@Autowired
	private UserFeignClient userFeignClient;

	@GetMapping("/movie/{id}")
	public User findById(@PathVariable("id") Long id) {
		return this.userFeignClient.findById(id);
	}

	@RequestMapping(value="/test", method=RequestMethod.GET)
	public User userPost(User user)
	{
		return this.userFeignClient.postUser(user);

	}
}