SpringBoot + Vue 实现单表的增删改查及分页

前端：Vue后端：SpringBoot、Mybatis数据库：MySQL工具：IDEA环境：JDK1.8、Tomcat 8

CSDN-Lemon

3905人浏览 · 2020-05-10 13:52:10

CSDN-Lemon · 2020-05-10 13:52:10 发布

前言

前端：Vue
后端：SpringBoot、Mybatis
数据库：MySQL
工具：IDEA
环境：JDK1.8、Tomcat 8、Maven

一、创建表，添加数据

1、创建数据库：CREATE table users (id int(20) auto_increment primary key,name VARCHAR(20) not null,age int(20) not null,sex varchar(20) not null,address varchar(30) not null);

2、插入数据：insert into users (name,age,sex,address) values("詹姆斯",36,"男","洛杉矶湖人");

3、插入三条数据后如下图：
在这里插入图片描述

二、IDEA创建SpringBoot项目

在这里插入图片描述

三、后端页面开发

1、SpringBoot启动类 `DemoApplication.java`

package cn.lemon.demo;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("cn.lemon.demo.dao")
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }
}

2、在`pom.xml` 中引入项目依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.14.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>cn.lemon</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <!-- springboot tomcat 支持 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 热部署 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <!--数据库-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.2.RELEASE</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

3、SpringBoot 配置文件`application.properties`

## 端口
server.port=8081

##数据源配置
spring.datasource.url=jdbc:mysql://localhost:3306/db_users
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

##MyBatis配置
mybatis.mapper-locations=classpath*:mybatis/*.xml
mybatis.type-aliases-package=cn.lemon.demo.domain

4、创建实体类 `User.java` ，映射数据库表

package cn.lemon.demo.domain;

import java.io.Serializable;

/**
 * user 实体类
 */
public class User implements Serializable {

  private String address;
  private int age;
  private int id;
  private String name;
  private String sex;

  public String getAddress() {
    return address;
  }


  public void setAddress(String address) {
    this.address = address;
  }


  public int getAge() {
    return age;
  }


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


  public int getId() {
    return id;
  }


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


  public String getName() {
    return name;
  }


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


  public String getSex() {
    return sex;
  }


  public void setSex(String sex) {
    this.sex = sex;
  }

  @Override
  public String toString() {
    return "User{" +
        "address='" + address + '\'' +
        ", age=" + age +
        ", id=" + id +
        ", name='" + name + '\'' +
        ", sex='" + sex + '\'' +
        '}';
  }
}

5、创建数据访问层 `IUserDao.java` 接口，`IUserDao.xml` 映射文件，对数据库表的增删改查

package cn.lemon.demo.dao;

import cn.lemon.demo.domain.User;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

/**
 * 数据库访问层，访问数据库
 */
@Mapper
public interface IUserDao {

  /**
   * 添加用户
   *
   * @param user
   * @return
   */
  int add(User user);


  /**
   * 删除用户
   *
   * @param id
   * @return
   */
  int delete(int id);


  /**
   * 查询所有用户
   *
   * @return
   */
  List<User> findAll();

  /**
   * 根据ID查询用户
   *
   * @param id
   * @return
   */
  User findById(Integer id);

  /**
   * 根据姓名查询所有用户
   *
   * @param name
   * @return
   */
  List<User> findByName(String name);

  /**
   * 查询行数
   *
   * @return
   */
  int getRowCount();

  /**
   * 分页查询所有用户
   *
   * @param startRows
   * @return
   */
  List<User> queryPage(Integer startRows);

  /**
   * 修改用户
   *
   * @param user
   * @return
   */
  int update(User user);


}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lemon.demo.dao.IUserDao">

    <insert id="add" parameterType="user">
        INSERT INTO
          `user`(`name`,`age`,`sex`,`address`)
        VALUES
          (#{name},#{age},#{sex},#{address})
    </insert>

    <delete id="delete">
        delete from user where id = #{id}
    </delete>

    <select id="findAll" resultType="user">
        select * from user
    </select>

    <select id="findById" resultType="user">
        select * from user where id = #{id}
    </select>

    <select id="findByName" resultType="user">
        select * from user where name like concat(concat('%',#{name}),'%')
			order by id desc
    </select>

    <select id="getRowCount" resultType="Integer">
		select count(*) from user
	</select>

    <select id="queryPage" resultMap="result" parameterType="Integer">
		select * from user order by id desc
			limit #{startRows},5
	</select>

    <resultMap id="result" type="cn.lemon.demo.domain.User">
        <result property="id" column="id"/>
        <result property="name" column="name"/>
        <result property="age" column="age"/>
        <result property="sex" column="sex"/>
        <result property="address" column="address"/>
    </resultMap>

    <update id="update">
        update user
        set name=#{name},age=#{age},sex=#{sex},address=#{address}
        where user.id=#{id}
    </update>
</mapper>

6、创建业务层 `IUserService.java`接口以及`UserServiceImpl.java`实现类

package cn.lemon.demo.service;

import cn.lemon.demo.domain.User;

import java.util.List;

public interface IUserService {

  /**
   * 添加用户
   *
   * @param user
   * @return
   */
  User add(User user);


  /**
   * 删除用户
   *
   * @param id
   * @return
   */
  int delete(int id);


  /**
   * 查询所有用户
   *
   * @return
   */
  List<User> findAll();


  /**
   * 根据ID查询用户
   *
   * @param id
   * @return
   */
  User findById(Integer id);


  /**
   * 根据姓名查询所有用户
   *
   * @param name
   * @return
   */
  List<User> findByName(String name);


  /**
   * 查询行数
   *
   * @return
   */
  int getRowCount();


  /**
   * 分页查询所有用户
   *
   * @param startRows
   * @return
   */
  List<User> queryPage(Integer startRows);


  /**
   * 修改用户
   *
   * @param user
   * @return
   */
  int update(User user);


}

package cn.lemon.demo.service.impl;

import cn.lemon.demo.dao.IUserDao;
import cn.lemon.demo.domain.User;
import cn.lemon.demo.service.IUserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class UserServiceImpl implements IUserService {

  @Resource
  private IUserDao iUserDao;

  @Override
  public User add(User user) {
    iUserDao.add(user);
    return user;
  }


  @Override
  public int delete(int id) {
    return iUserDao.delete(id);
  }


  @Override
  public List<User> findAll() {
    return iUserDao.findAll();
  }


  @Override
  public User findById(Integer id) {
    return iUserDao.findById(id);
  }


  @Override
  public List<User> findByName(String name) {
    return iUserDao.findByName(name);
  }


  @Override
  public int getRowCount() {
    return iUserDao.getRowCount();
  }


  @Override
  public List<User> queryPage(Integer startRows) {
    return iUserDao.queryPage(startRows);
  }


  @Override
  public int update(User user) {
    return iUserDao.update(user);
  }


}

7、创建控制层 `WebController.java`

package cn.lemon.demo.web.controller;

import cn.lemon.demo.domain.User;
import cn.lemon.demo.service.impl.UserServiceImpl;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class WebController {

  @Resource
  private UserServiceImpl userService;

  @RequestMapping(value = "/delete", method = RequestMethod.POST)
  public Integer delete(Integer id) {
    System.out.println(id);
    int result = userService.delete(id);
    return result;
  }

  @RequestMapping(value = "/update", method = RequestMethod.POST)
  @ResponseBody
  public String update(User user) {
    int result = userService.update(user);
    if (result >= 1) {
      return "修改成功";
    } else {
      return "修改失败";
    }

  }

  @RequestMapping(value = "/add", method = RequestMethod.POST)
  public User add(User user) {
    return userService.add(user);
  }

  @RequestMapping("/userList")
  @ResponseBody
  public List<User> userList() {
    return userService.findAll();
  }

  @RequestMapping("/findByName")
  @ResponseBody
  public List<User> findByName(String name) {
    return userService.findByName(name);
  }

  
  @RequestMapping(value="/page")
  @ResponseBody
  public List<User> page(Integer page){
    int pageNow = page == null ? 1 : page;
    int pageSize = 5;
    int startRows = pageSize*(pageNow-1);
    List<User> list = userService.queryPage(startRows);
    return list;
  }

  @RequestMapping(value="/rows")
  @ResponseBody
  public int rows(){
    return userService.getRowCount();
  }
}

8、创建日志文件 `log4j.properties`，这样我们就可以在控制台看到打印日志

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
#log4j.rootCategory=debug, CONSOLE, LOGFILE
log4j.rootCategory=debug, CONSOLE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
#log4j.appender.LOGFILE=org.apache.log4j.FileAppender
#log4j.appender.LOGFILE.File=d:\axis.log
#log4j.appender.LOGFILE.Append=true
#log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
#log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

9、服务层测试 `UserServiceImplTest.java`（Ctrl + Shift + T）

package cn.lemon.demo.service.impl;

import cn.lemon.demo.domain.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import javax.annotation.Resource;
import java.util.List;

@SpringBootTest
@RunWith(SpringRunner.class)
public class UserServiceImplTest {

  @Resource
  private UserServiceImpl userService;

  @Test
  public void add() {
    User user = new User();
    user.setName("马化腾");
    user.setAge(50);
    user.setSex("男");
    user.setAddress("深圳市腾讯");
    userService.add(user);
  }


  @Test
  public void delete() {
    userService.delete(16);
  }


  @Test
  public void findAll() {
    List<User> userList = userService.findAll();
    for (User user : userList) {
      System.out.println(user.getName() + user.getAddress());
    }
  }


  @Test
  public void findById() {
    User user = userService.findById(1);
    System.out.println(user.getName());
  }


  @Test
  public void findByName() {
    List<User> userList = userService.findByName("詹");
    for (User user : userList) {
      System.out.println(user.getAge() + user.getAddress());
    }
  }


  @Test
  public void getRowCount() {
    int i = userService.getRowCount();
    System.out.println(i);
  }


  @Test
  public void queryPage() {
    List<User> userList = userService.queryPage(1);
    for (User user : userList) {
      System.out.println(user.getName() + user.getAddress());
    }
  }


  @Test
  public void update() {
    User user = new User();
    user.setId(13);
    user.setName("科比");
    user.setAge(40);
    user.setSex("男");
    user.setAddress("洛杉矶湖人");
    userService.update(user);

    User user1 = userService.findById(13);
    System.out.println(user1.getName() + user1.getAddress());
  }
}

三、安装 Vue CLI脚手架

Vue 详细介绍请点击 Vue基础

1、简单介绍

1、Vue 就是一款MVVM模式的框架。
2、Node.js基于事件循环的异步IO框架
3、NPM是Node.js的包管理系统，开发人员可以遵循Common.js规范来编写Node.js模块，然后发布到NPM上供其他开发人员使用。目前已经是世界最大的包模块管理系统。

2、安装 Node.js

1、官网下载 https://nodejs.org/en/download/
2、安装完成后，控制台执行node -v,查看是否安装成功
3、在命令行中运行命令npm install -g vue-cli,安装完成
4、安装完成Node应该自带了NPM了，在控制台输入npm -v查看：
在这里插入图片描述

四、IDEA创建Vue项目

1、新建 Module -> Static Web -> Vue.js
在这里插入图片描述

2、配置运行环境

3、npm启动

4、运行 http://localhost:8080/

5、各文件夹代表的意思（有小红旗的为重点）

五、前端页面开发

1、安装axios

在项目跟目录执行命令npm install --save axios
在这里插入图片描述
Axioss介绍：

axios 是一个基于 promise 的 HTTP 库，可以用在浏览器和 node.js 中

Axioss特点：

从浏览器中创建 XMLHttpRequests
从 node.js 创建 http 请求
支持 Promise API
拦截请求和响应
转换请求数据和响应数据
取消请求
自动转换 JSON 数据

2、安装element ui

在项目跟目录执行命令npm i element-ui -S
在这里插入图片描述
Element UI介绍：

Element UI一套为开发者、设计师和产品经理准备的基于 Vue 2.0 的桌面端组件库

3、修改`ui\src\App.vue`

<template>
  <div id="app">
    <el-row type="flex" justify="center">
      <el-col :xs="22" :sm="20" :md="18" :lg="18" :xl="16">
        <router-view/>
      </el-col>
    </el-row>
  </div>
</template>

<script>
export default {
  name: 'App',
  data() {
    return {
    }
  },
  methods: {
  }
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

4、修改`ui\src\mian.js`

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
//引入Elemnet-UI
import elementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'
import 'element-ui/lib/theme-chalk/display.css'

Vue.use(elementUI)

import axios from 'axios'
Vue.prototype.axios = axios

import qs from 'qs';
Vue.prototype.qs = qs;

Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  components: { App },
  template: '<App/>'
})

5、修改`ui\src\components\HelloWorld.vue`

<template>
  <div>
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input
          v-model="search"
          class="search_name"
          size="mini"
          placeholder="输入姓名查询">
        </el-input>
      </el-form-item>
      <el-form-item>
        <el-button
          type="text"
          @click="onSearch()"
          class="el-icon-search">查询
        </el-button>
      </el-form-item>
      <el-form-item>
        <el-button
          class="el-icon-refresh"
          type="text"
          @click="refreshData">刷新
        </el-button>
      </el-form-item>
      <el-form-item>
        <el-button
          class="el-icon-circle-plus-outline"
          type="text"
          @click="dialogVisible = true">添加
        </el-button>
      </el-form-item>
    </el-form>
    <el-table
      :data="tableData"
      highlight-current-row
      border
      style="width: 100%">
      <el-table-column
        label="编号">
        <template slot-scope="scope">
          <span>{{ scope.row.id }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="姓名">
        <template slot-scope="scope">
          <el-popover trigger="hover" placement="right">
            <p>姓名: {{ scope.row.name }}</p>
            <div slot="reference" class="name-wrapper">
              <el-button type="text">{{ scope.row.name }}</el-button>
            </div>
          </el-popover>
        </template>
      </el-table-column>
      <el-table-column
        label="年龄">
        <template slot-scope="scope">
          <span>{{ scope.row.age }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="性别">
        <template slot-scope="scope">
          <span>{{ scope.row.sex }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="地址">
        <template slot-scope="scope">
          <span>{{ scope.row.address }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        fixed="right"
        width="200">
        <template slot-scope="scope">
          <el-button
            size="mini"
            icon="el-icon-edit"
            @click="handleEdit(scope.$index, scope.row)">编辑
          </el-button>
          <el-button
            size="mini"
            type="danger"
            icon="el-icon-delete"
            @click="handleDelete(scope.$index, scope.row)">删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="70px" class="demo-ruleForm" size="medium">
      <el-dialog
        title="编辑"
        :append-to-body='true'
        :visible.sync="dialogVisible"
        width="80%"
        :before-close="handleClose">
        <el-input type="hidden" v-model="ruleForm.id"/>

        <el-form-item label="姓名" prop="name">
          <el-input v-model="ruleForm.name"></el-input>
        </el-form-item>

        <el-form-item label="年龄" prop="age">
          <el-input v-model="ruleForm.age"></el-input>
        </el-form-item>

        <el-form-item label="性别" prop="sex">
        <el-input v-model="ruleForm.sex"></el-input>
        </el-form-item>

        <el-form-item label="地址" prop="address">
          <el-input v-model="ruleForm.address"></el-input>
        </el-form-item>

        <span slot="footer" class="dialog-footer">
            <el-button @click="cancel()" size="medium">取 消</el-button>
            <el-button @click="addUser()" type="primary" size="medium">确 定</el-button>
          </span>
      </el-dialog>
    </el-form>

    <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="70px" class="demo-ruleForm" size="medium">
      <el-dialog
        title="编辑"
        :append-to-body='true'
        :visible.sync="dialogUpdate"
        width="80%"
        :before-close="handleClose">
        <el-input type="hidden" v-model="ruleForm.id"/>

        <el-form-item label="姓名" prop="name">
          <el-input v-model="ruleForm.name"></el-input>
        </el-form-item>

        <el-form-item label="年龄" prop="age">
          <el-input v-model="ruleForm.age"></el-input>
        </el-form-item>

        <el-form-item label="性别" prop="sex">
          <el-input v-model="ruleForm.sex"></el-input>
        </el-form-item>

        <el-form-item label="住址" prop="address">
          <el-input v-model="ruleForm.address"></el-input>
        </el-form-item>

        <span slot="footer" class="dialog-footer">
            <el-button @click="cancel()" size="medium">取 消</el-button>
            <el-button @click="updateUser()" type="primary" size="medium">确 定</el-button>
          </span>
      </el-dialog>
    </el-form>
    <br>
    <div class="pages">
      <el-pagination
        background
        :disabled = "disablePage"
        :current-page.sync="currentPage"
        small
        layout="prev, pager, next"
        :page-size="pageSize"
        :total="total"
        @current-change="handleCurrentChange">
      </el-pagination>
    </div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        ruleForm: {
          id: '',
          name: '',
          age: '',
          sex: '',
          address: ''
        },
        rules: {
          name: [
            { required: true, message: '请输入姓名', trigger: 'blur' },
            { min: 2, max: 7, message: '长度在 2 到 7 个字符', trigger: 'blur' }
          ],
          address: [
            { required: true, message: '请输入地址', trigger: 'blur' },
            { min: 4, message: '长度大于 4 个字符', trigger: 'blur' }
          ],
        },
        tableData: [],
        search: '',
        dialogVisible: false,
        dialogUpdate: false,
        pageSize: 5,
        currentPage: 1,
        total: 0,
        disablePage: false
      }
    },
    methods: {
      handleEdit(index, row) {
        this.dialogUpdate = true;
        this.ruleForm = Object.assign({}, row); //这句是关键！！！
      },
      handleDelete(index, row) {
        console.log(index, row);
        this.$confirm('删除操作, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          let postData = this.qs.stringify({
            id: row.id,
          });
          this.axios({
            method: 'post',
            url:'/delete',
            data:postData
          }).then(response =>
          {
            this.getPages();
            this.currentPage = 1;
            this.axios.post('/page').then(response =>
            {
              this.tableData = response.data;
            }).catch(error =>
            {
              console.log(error);
            });
            this.$message({
              type: 'success',
              message: '删除成功!'
            });
            console.log(response);
          }).catch(error =>
          {
            console.log(error);
          });

        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });
        });
      },
      handleClose(done) {
        this.$confirm('确认关闭？')
          .then(_ => {
            done();
          })
          .catch(_ => {});
      },
      handleCurrentChange() {
        console.log(`当前页: ${this.currentPage}`);
        let postData = this.qs.stringify({
          page: this.currentPage
        });
        this.axios({
          method: 'post',
          url:'/page',
          data:postData
        }).then(response =>
        {
          this.tableData = response.data;
        }).catch(error =>
        {
          console.log(error);
        });
      },
      cancel() {
        this.dialogUpdate = false;
        this.dialogVisible = false;
        this.emptyUserData();
      },
      emptyUserData(){
        this.ruleForm = {
          id: '',
          name: '',
          age: '',
          sex: '',
          address: ''
        }
      },
      addUser() {
        let postData = this.qs.stringify({
          name: this.ruleForm.name,
          age: this.ruleForm.age,
          sex: this.ruleForm.sex,
          address: this.ruleForm.address
        });
        this.axios({
          method: 'post',
          url:'/add',
          data:postData
        }).then(response =>
        {
          this.axios.post('/page').then(response =>
          {
            this.tableData = response.data;
            this.currentPage = 1;
            this.$message({
              type: 'success',
              message: '已添加!'
            });
          }).catch(error =>
          {
            console.log(error);
          });
          this.getPages();
          this.dialogVisible = false
          console.log(response);
        }).catch(error =>
        {
          console.log(error);
        });
      },
      updateUser() {
        let postData = this.qs.stringify({
          id: this.ruleForm.id,
          name: this.ruleForm.name,
          age: this.ruleForm.age,
          sex: this.ruleForm.sex,
          address: this.ruleForm.address
        });
        this.axios({
          method: 'post',
          url:'/update',
          data:postData
        }).then(response =>
        {
          this.handleCurrentChange();
          this.cancel();
          this.$message({
            type: 'success',
            message: '更新成功!'
          });
          console.log(response);
        }).catch(error =>
        {
          this.$message({
            type: 'success',
            message: '更新失败!'
          });
          console.log(error);
        });
      },
      onSearch() {
        let postData = this.qs.stringify({
          name: this.search
        });
        this.axios({
          method: 'post',
          url: '/findByName',
          data: postData
        }).then(response =>
        {
          this.tableData = response.data;
          this.disablePage = true;
        }).catch(error =>
        {
          console.log(error);
        });
      },
      getPages() {
        this.axios.post('/rows').then(response =>
        {
          this.total = response.data;
        }).catch(error =>
        {
          console.log(error);
        });
      },
      refreshData() {
        location.reload();
      }
    },
    created() {
      this.axios.post('/page').then(response =>
      {
        this.tableData = response.data;
      }).catch(error =>
      {
        console.log(error);
      });

      this.axios.post('/rows').then(response =>
      {
        this.total = response.data;
      }).catch(error =>
      {
        console.log(error);
      });

    },
  }
</script>
<style scoped>
  .search_name{
    width: 200px;
  }
  .pages{
    margin: 0px;
    padding: 0px;
    text-align: right;
  }
</style>

6、前后端整合

在ui\config\index.js文件中配置proxyTable{}

    //前后端整合
    proxyTable: {
      '/': {
        target:'http://localhost:8081', // 你请求的第三方接口
        changeOrigin:true, // 在本地会创建一个虚拟服务端，然后发送请求的数据，并同时接收请求的数据，这样服务端和服务端进行数据的交互就不会有跨域问题
        pathRewrite:{  // 路径重写，
          '^/': ''  // 替换target中的请求地址
        }
      }
    },

7、项目结构

在这里插入图片描述

六、项目运行显示

在这里插入图片描述

1、6位小写字母和数字必须包含两个字母rules: [{ required: true, message: "XXX不能为空", trigger: "blur" },{ max: 6, message: "最大长度为6位字符", trigger: "blur" },{pattern: /^(?=(?:[^a-z]*[a-z]){2})[a-z0-9]{6,6}$/, //不连续的两位字母// /^

Vue

echarts堆叠柱状图

Vue

Error in v-on handler: "TypeError: Cannot read properties of undefined (reading 'current')"

这是一个 Vue.js 错误，报错信息提示在 v-on 处理程序中出现了错误：“TypeError: Cannot read properties of undefined(读取 'current')”。这意味示在您的代码中，试图读取一个未定义的变量 'current'。您需要检查您的代码，确保 'current' 已正确定义并初始化。...

Vue

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CSDN-Lemon

@weixin_43860260

已为社区贡献1条内容

SpringBoot + Vue 实现单表的增删改查及分页

CSDN-Lemon

前言

前端：`Vue`

后端：`SpringBoot`、`Mybatis`

数据库：`MySQL`

工具：`IDEA`

环境：`JDK1.8`、`Tomcat 8`、`Maven`

一、创建表，添加数据

二、IDEA创建SpringBoot项目

三、后端页面开发

1、SpringBoot启动类 `DemoApplication.java`

2、在`pom.xml` 中引入项目依赖

3、SpringBoot 配置文件`application.properties`

4、创建实体类 `User.java` ，映射数据库表

5、创建数据访问层 `IUserDao.java` 接口，`IUserDao.xml` 映射文件，对数据库表的增删改查

6、创建业务层 `IUserService.java`接口以及`UserServiceImpl.java`实现类

7、创建控制层 `WebController.java`

8、创建日志文件 `log4j.properties`，这样我们就可以在控制台看到打印日志

9、服务层测试 `UserServiceImplTest.java`（Ctrl + Shift + T）

三、安装 Vue CLI脚手架

1、简单介绍

2、安装 Node.js

四、IDEA创建Vue项目

五、前端页面开发

1、安装axios

2、安装element ui

3、修改`ui\src\App.vue`

4、修改`ui\src\mian.js`

5、修改`ui\src\components\HelloWorld.vue`

6、前后端整合

7、项目结构

六、项目运行显示

代码下载

所有评论(0)

CSDN-Lemon

SpringBoot + Vue 实现单表的增删改查及分页

CSDN-Lemon

前言

前端：Vue

后端：SpringBoot、Mybatis

数据库：MySQL

工具：IDEA

环境：JDK1.8、Tomcat 8、Maven

一、创建表，添加数据

二、IDEA创建SpringBoot项目

三、后端页面开发

1、SpringBoot启动类 DemoApplication.java

2、在pom.xml 中引入项目依赖

3、SpringBoot 配置文件application.properties

4、创建实体类 User.java ，映射数据库表

5、创建数据访问层 IUserDao.java 接口 ，IUserDao.xml 映射文件，对数据库表的增删改查

6、创建业务层 IUserService.java接口以及UserServiceImpl.java实现类

7、创建控制层 WebController.java

8、创建日志文件 log4j.properties，这样我们就可以在控制台看到打印日志

9、服务层测试 UserServiceImplTest.java（Ctrl + Shift + T）

三、安装 Vue CLI脚手架

1、简单介绍

2、安装 Node.js

四、IDEA创建Vue项目

五、前端页面开发

1、安装axios

2、安装element ui

3、修改ui\src\App.vue

4、修改ui\src\mian.js

5、修改ui\src\components\HelloWorld.vue

6、前后端整合

7、项目结构

六、项目运行显示

代码下载

所有评论(0)

CSDN-Lemon

前端：`Vue`

后端：`SpringBoot`、`Mybatis`

数据库：`MySQL`

工具：`IDEA`

环境：`JDK1.8`、`Tomcat 8`、`Maven`

1、SpringBoot启动类 `DemoApplication.java`

2、在`pom.xml` 中引入项目依赖

3、SpringBoot 配置文件`application.properties`

4、创建实体类 `User.java` ，映射数据库表

5、创建数据访问层 `IUserDao.java` 接口，`IUserDao.xml` 映射文件，对数据库表的增删改查

6、创建业务层 `IUserService.java`接口以及`UserServiceImpl.java`实现类

7、创建控制层 `WebController.java`

8、创建日志文件 `log4j.properties`，这样我们就可以在控制台看到打印日志

9、服务层测试 `UserServiceImplTest.java`（Ctrl + Shift + T）

3、修改`ui\src\App.vue`

4、修改`ui\src\mian.js`

5、修改`ui\src\components\HelloWorld.vue`