1、maven继承spring-boot
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --></parent>
2、指定jdk版本和字符集
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version></properties>
3、添加依赖
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-text</artifactId> <version>1.2</version> </dependency></dependencies>
4、添加插件
<plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId></plugin>
5、配置src/main/resources/application.yml
spring: datasource: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/react username: root password: 123456 type: com.alibaba.druid.pool.DruidDataSource jpa: show-sql: true hibernate: ddl-auto: update database: mysql database-platform: org.hibernate.dialect.MySQL5InnoDBDialect
6、编写启动类
package com.example.react;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class ReactApplication { public static void main(String[] args) { SpringApplication.run(ReactApplication.class, args); }}7、持久化对象类
package com.example.react.model;import lombok.*;import lombok.experimental.Accessors;import javax.persistence.*;/** * 用户类 */@Table(name = "t_user")@Entity@Setter@Getter@NoArgsConstructor@AllArgsConstructor@ToString@Accessors(chain = true)public class User { /** * 用户ID */ @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; /** * 用户名 */ private String name;}8、持久化操作接口
package com.example.react.dao;import com.example.react.model.User;import org.springframework.data.jpa.repository.JpaRepository;import org.springframework.stereotype.Repository;@Repositorypublic interface UserDao extends JpaRepository<User,Long> {}9、控制层
package com.example.react.controller;import com.example.react.model.User;import com.example.react.dao.UserDao;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.*;import java.util.List;@RestController@RequestMapping("/user")public class UserController { @Autowired private UserDao userDao; /** * 查询所有用户 * @return */ @GetMapping public List<User> all(){ return this.userDao.findAll(); } /** * 保存用户 * 新增或更新 * @param user * @return */ @PostMapping public Object save(@RequestBody User user){ this.userDao.save(user); return true; } /** * 根据ID删除用户 * @param id * @return */ @DeleteMapping("/{id}") public Object delete(@PathVariable Long id){ this.userDao.deleteById(id); return true; }}10、启动后台项目
11、在项目根路径创建前端项目，使用create-react-app
npx create-react-app web
给命令会在当前目录下使用create-react-app创建一个react单页项目
12、进入web目录，添加依赖库
npm install axios bootstrap@3.3.7 --save
13、在package.json中增加前后端交互代理
"proxy": http://localhost:8080
14、删除前端项目src 目录下无用的文件，只保留index.js和App.js，并修改文件使其能够运行
目录结构
index.js
import React from 'react';import ReactDOM from 'react-dom';import App from './App';ReactDOM.render(<App />, document.getElementById('root'));App.js
import React, { Component } from 'react';class App extends Component { render() { return ( <div> </div> ); }}export default App;15、在index.js中引入bootstrap样式文件
注意：这里只需要引入css文件即可
import React from 'react';import ReactDOM from 'react-dom';import 'bootstrap/dist/css/bootstrap.min.css';import App from './App';ReactDOM.render(<App />, document.getElementById('root'));16、接下来进行页面布局，这是一个简单的增删改查功能，所以只需要在一个页面编写全部功能即可，左侧为一个表格，右侧为一个表单，如下图
17、首先利用bootstrap中提供的栅格模式，将页面分为左右两栏，两栏中分别有一个panel
render() { return ( <div className="container-fluid" style={{marginTop: '20px'}}> <div className="row"> <div className="col-xs-4 col-xs-offset-1"> <div className="panel panel-default"> <div className="panel-body"> 表格区域 </div> </div> </div> <div className="col-xs-3 col-xs-offset-1"> <div className="panel panel-default"> <div className="panel-body"> 表单区域 </div> </div> </div> </div> </div> );}18、添加表格
<table className="table table-bordered"> <thead> <tr> <th>ID</th> <th>用户名</th> <th>操作</th> </tr> </thead> <tbody> </tbody></table>
19、添加表单
<form className="form-horizontal"> <div className="form-group"> <label htmlFor="name" className="col-xs-3">用户名</label> <div className="col-xs-8"> <input type="text" id="name" className="form-control"/> </div> </div> <div className="form-group"> <div className="col-sm-offset-2 col-sm-10"> <button className="btn btn-default">提交</button> </div> </div></form>
20、初始化 state
constructor(props) { super(props); this.state = { id:'', name:'', list:[] }}21、实现查询函数，并在App组件挂载渲染完成后执行查询函数
引入axios
import axios from 'axios';
声明查询函数
query = () =>{ axios.get('/user').then(({data})=>{ this.setState({ list:data }); });}组件挂载完成后执行查询函数
componentDidMount(){ this.query();}22、向表格中填充数据
<tbody>{ this.state.list.map(item=>{ return ( <tr key={item.id}> <td>{item.id}</td> <td>{item.name}</td> <td> <button className="btn btn-primary">修改</button> <button className="btn btn-danger" style={{marginLeft:'5px'}}>删除</button> </td> </tr> ) })}</tbody>23、对表单中的文本框和提交按钮进行控制
文本框
<input type="text" id="name" className="form-control" value={this.state.name} onChange={ (e)=>{ this.setState({ name:e.target.value }) }}/>提交按钮点击事件
<button className="btn btn-default" onClick={this.handleFormSubmit}>提交</button>点击事件函数
handleFormSubmit = (e) => { e.preventDefault(); if (this.state.name != '') { axios.post('/user', { id: !this.state.id ? '' : this.state.id, name: this.state.name }).then(({data}) => { this.setState({ id: '', name: '' }); this.query(); }) }}24、对表格中每一行的修改和删除按钮进行事件处理
<button className="btn btn-primary" onClick={() => { this.setState({id: item.id, name: item.name}) }}>修改 </button> <button className="btn btn-danger" style={{marginLeft: '5px'}} onClick={() => { this.deleteItem(item) }}>删除 </button>删除操作函数
deleteItem = (item) => { axios.delete(`/user/${item.id}`).then(({data}) => { this.query(); })}25、执行npm start启动前端
26、表单数据居中显示添加App.css
.table th, .table td { text-align: center; vertical-align: middle!important;}App.js中引入App.css
import './App.css'
源码地址：react-crud_jb51.rar
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