使用React和springboot做前后端分离项目的步骤方式

import React,{Component} from 'react'
import axios from 'axios'
export default class App extends Component{
	state = { //初始化状态
		aaa:[]
	} 
	getStudentData = ()=>{
		axios.get('http://localhost:3000/api1/ltl/students').then(
			response => {console.log('成功了',response.data.user);
				this.setState({aaa:response.data.user})
		},
			error => {console.log('失败了',error);}
		)
	}
	render(){
		const {aaa}=this.state
	    console.log("111",aaa)
		return (
			<div>
				<button onClick={this.getStudentData}>点我获取学生数据</button>
				<ul>
					{
				aaa.map((user)=>{
						return (
							<li>
							<div key={user.id}>
								<p>id: {user.id} 名字：{user.name}  密码：{user.pwd}</p>
							</div>
							</li>
						)
					})
					}
				</ul>		 	
			</div>
		)
	}
}

const proxy = require('http-proxy-middleware')
module.exports = function(app){
	app.use(
		proxy('/api1',{ //遇见/api1前缀的请求，就会触发该代理配置
			target:'http://localhost:8080', //请求转发给谁
			changeOrigin:true,//控制服务器收到的请求头中Host的值
			pathRewrite:{'^/api1':''} //重写请求路径(必须)
		})
	)
}

   <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.76</version>
  </dependency>

public class User {
    private Integer id;
    private String name;
    private String pwd;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", pwd='" + pwd + '\'' +
                '}';
    }
    public User() {
        super();
    }
    public  User(Integer id,String name, String pwd){
        this.id=id;
        this.name=name;
        this.pwd=pwd;
    }
}

import com.alibaba.fastjson.JSONObject;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.List;
@RestController
@RequestMapping("/ltl")
public class jsonController {
    @RequestMapping("/students")
    public  JSONObject jsonTest(){
        User user1 = new User(1,"小明","123456xm");
        User user2 = new User(2,"小红","123456xh");
        User user3 = new User(3,"小李","123456xl");
        List list = new ArrayList<User>();
        list.add(user1);
        list.add(user2);
        list.add(user3); 
        JSONObject jsonObject2 = new JSONObject();
        jsonObject2.put("user",list);
        System.out.println(jsonObject2);
        return jsonObject2;
    }
}