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@FeignClient 接口调用

發(fā)布時(shí)間：2024/1/23 编程问答 29 豆豆

生活随笔收集整理的這篇文章主要介紹了 @FeignClient 接口调用小編覺得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.

在項(xiàng)目的啟動文件加入：@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);

????}

}

實(shí)例結(jié)構(gòu)如下：

那么有實(shí)體類: User.java

Fengn客戶端：UserFeignClient.java

控制器: MovieController.java調(diào)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客戶端

其中：@FeignClient("spring-boot-user")： spring-boot-user是eureka服務(wù)里面user項(xiàng)目的名稱，加入此注解，能直接連接user項(xiàng)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 {

????// 兩個(gè)坑：1. @GetMapping不支持?? 2. @PathVariable得設(shè)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，調(diào)取UserFeign客戶端

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);

?????????

????}

}

總結(jié)

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