学生管理系统Element UI版

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搭建环境

• 创建vue项目：vue create day16_element_student

• 安装第三方组件：axios、element

npm install axios

vue add elment

SQL

tb_class:

CREATE TABLE `tb_class` (
  `c_id` varchar(32) NOT NULL COMMENT '班级ID',
  `c_name` varchar(50) DEFAULT NULL COMMENT '班级名称',
  `desc` varchar(200) DEFAULT NULL COMMENT '班级描述',
  PRIMARY KEY (`c_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


insert  into `tb_class`(`c_id`,`c_name`,`desc`) values ('c001','Java12班','花儿222'),('c002','Java34班','艺术223'),('c003','虚拟的班级','111'),('c004','222','22');

tb_student:

CREATE TABLE `tb_student` (
  `s_id` varchar(32) NOT NULL COMMENT '学生ID',
  `sname` varchar(50) DEFAULT NULL COMMENT '姓名',
  `age` int(11) DEFAULT NULL COMMENT '年龄',
  `birthday` datetime DEFAULT NULL COMMENT '生日',
  `gender` char(1) DEFAULT NULL COMMENT '性别',
  `c_id` varchar(32) DEFAULT NULL,
  PRIMARY KEY (`s_id`),
  KEY `c_id` (`c_id`),
  CONSTRAINT `tb_student_ibfk_1` FOREIGN KEY (`c_id`) REFERENCES `tb_class` (`c_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;



insert  into `tb_student`(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values ('s001','赵三',19,'2001-01-17 00:00:00','1','c001'),('s002','刘悦11',60,'1998-10-08 00:00:00','0','c002'),('s003','孙五',18,'2002-03-15 00:00:00','1','c001'),('s004','李三',19,'2001-04-14 00:00:00','0','c002'),('s005','梁桐',35,'2001-02-02 00:00:00','1','c002'),('s006','刘悦22',60,'2022-02-07 00:00:00','0','c002'),('s21','小红',20,'2022-03-20 00:00:00','0','c002');

tb_user:

DROP TABLE IF EXISTS `tb_user`;

CREATE TABLE `tb_user` (
  `u_id` varchar(32) NOT NULL COMMENT '用户编号',
  `user_name` varchar(50) DEFAULT NULL COMMENT '用户名',
  `password` varchar(32) DEFAULT NULL COMMENT '密码',
  `gender` bit(1) DEFAULT NULL COMMENT '性别,1表示男，0表示女',
  PRIMARY KEY (`u_id`),
  UNIQUE KEY `user_name` (`user_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


insert  into `tb_user`(`u_id`,`user_name`,`password`,`gender`) values ('1','jack','1234',''),('10','jack5','1234',''),('2','rose','1234','\0'),('3','张三','1234',''),('4','tom','1234',''),('5','jack2','1234',''),('6','jack1','1234',''),('7','jack3','1234',''),('8','jack4','1234',''),('cd0d2523b5024589af142787de8a7b2a','jack6','1234','');

后端

链接：https://pan.baidu.com/s/1FAb2WUSUwpRuwIB9Spy3oQ 
提取码：1234

关键代码

ClassesController：

package com.czxy.controller;

import com.czxy.domain.Classes;
import com.czxy.service.ClassesService;
import com.czxy.vo.BaseResult;
import org.springframework.web.bind.annotation.*;

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

/**
 * @Author 刘嘉俊
 * @Date 2022/2/21
 */
@RestController
@RequestMapping("/classes")
@CrossOrigin
public class ClassesController {

    @Resource
    private ClassesService classesService;

    @GetMapping
    public BaseResult<List<Classes>> list(){
        List<Classes> list = classesService.selectAll();
        return BaseResult.ok("查询成功",list);
    }

    @PostMapping
    public BaseResult add(@RequestBody Classes classes){
        boolean result = classesService.add(classes);

        if(result){
            return BaseResult.ok("添加成功");
        }

        return BaseResult.error("添加失败");
    }

    @GetMapping("/{cid}")
    public BaseResult<Classes> selectById(@PathVariable("cid") String cid){
        Classes classes = classesService.selectById(cid);

        return BaseResult.ok("查询详情成功",classes);
    }

    @PutMapping
    public BaseResult update(@RequestBody Classes classes){
        try {
            boolean result = classesService.update(classes);

            if(result){
                return BaseResult.ok("查询成功");
            }
            return BaseResult.error("更新失败");
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }

    @DeleteMapping("/{classesId}")
    public BaseResult delete(@PathVariable("classesId") String classesId){
        boolean result = classesService.deleteById(classesId);

        if(result){
            return BaseResult.ok("删除成功");
        }
        return BaseResult.error("删除失败");
    }
}

StudentController：

package com.czxy.controller;

import com.czxy.domain.Student;
import com.czxy.service.StudentService;
import com.czxy.vo.BaseResult;
import com.czxy.vo.StudentVo;
import com.github.pagehelper.PageInfo;
import org.springframework.web.bind.annotation.*;

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

/**
 * @Author 刘嘉俊
 * @Date 2022/2/21
 */
@RestController
@RequestMapping("/student")
@CrossOrigin
public class StudentController {

    @Resource
    private StudentService studentService;

    @PostMapping("/condition/{pageSize}/{pageNum}")
    public BaseResult condition(
            @PathVariable("pageSize") Integer pageSize,
            @PathVariable("pageNum") Integer pageNum,
            @RequestBody StudentVo studentVo) {

        // 查询
        PageInfo<Student> pageInfo = studentService.condition(pageSize,pageNum,studentVo);

        // 返回结果
        return BaseResult.ok("查询成功", pageInfo);
    }

    @GetMapping("/{sid}")
    public BaseResult selectById(@PathVariable("sid") String sid){
        Student student = studentService.selectById(sid);

        return BaseResult.ok("查询成功",student);
    }

    @PutMapping
    public BaseResult update(@RequestBody Student student){
        System.out.println(student);
        try {
            boolean result = studentService.update(student);
            if(result){
                return BaseResult.ok("更新成功");
            }else{
                return BaseResult.error("更新失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }

    @DeleteMapping("/{sid}")
    public BaseResult delete(@PathVariable("sid")String sid){
        System.out.println("sid" + sid);
        try {
            boolean result = studentService.delete(sid);
            if(result){
                return BaseResult.ok("删除成功");
            }
            return BaseResult.error("删除失败");
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }

    @PostMapping
    public BaseResult addStudent(@RequestBody Student student){
        try {
            boolean result = studentService.addStudent(student);
            if(result){
                return BaseResult.ok("添加成功");
            }
            return BaseResult.error("添加失败");
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }

    @PostMapping("/save")
    public BaseResult save(@RequestBody Student student){
        try {
            boolean result = studentService.saveOrUpdate(student);
            if(result){
                return BaseResult.ok("编辑 | 添加 成功");
            }else{
                return BaseResult.error("编辑 | 添加 失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }

    @PostMapping("/batchDelete")
    public BaseResult deleteIds(@RequestBody List<String> ids){
        try {
            studentService.deleteIds(ids);

            return BaseResult.ok("删除成功");
        } catch (Exception e) {
            e.printStackTrace();
            return BaseResult.error(e.getMessage());
        }
    }
}

UserController:

package com.czxy.controller;

import com.czxy.domain.User;
import com.czxy.service.UserService;
import com.czxy.vo.BaseResult;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;

/**
 * @Author 刘嘉俊
 * @Date 2022/3/16
 */

@RestController
@RequestMapping("/user")
@CrossOrigin
public class UserController {

    @Resource
    private UserService userService;

    @PostMapping("/login")
    public BaseResult login(@RequestBody User user){
        User loginUser = userService.login(user);

        if(loginUser != null){
            return BaseResult.ok("登录成功",loginUser);
        }else{
            return BaseResult.error("用户名或密码不匹配");
        }
    }

    @PostMapping("/check")
    public BaseResult check(@RequestBody User user){
        User findUser = userService.findByUsername(user.getUsername());

        if(findUser == null){
            return BaseResult.ok("用户名可用");
        }else{
            return BaseResult.error("用户名已存在");
        }
    }
}

查询所有前端

显示页面

 创建页面

 配置路由

const routes = [
  {
    path: '/studentList',
    name: '学生列表',
    component: () => import('../views/StudentList.vue')
  }
]

访问路径

http://localhost:8080/studentList

ajax操作

<template>
  <div>
    {{studentPage}}
  </div>
</template>

<script>
// 导入axios
import axios from 'axios'
export default {
  data() {
    return {
      studentVo: {    //条件查询

      },
      studentPage: {    //分页数据
        pageNum: 1,
        pageSize: 3
      }
    }
  },
  methods: {
    async condition() {
      // ajax查询
      var url = `http://localhost:8888/student/condition/${this.studentPage.pageSize}/${this.studentPage.pageNum}`
      let {data:baseResult} = await axios.post(url, this.studentVo)
      // 保存结果
      this.studentPage = baseResult.data
    }
  },
  mounted() {
    // 查询
    this.condition()
  },
}
</script>

<style>

</style>

整合element ui

<template>
  <div>
    <!-- 表单start -->
    <el-form :inline="true" :model="studentVo" size="mini" >
      <el-form-item label="班级">
        <el-select v-model="studentVo.cid" placeholder="请选择班级" clearable>
          <el-option label="Java12班" value="c001"></el-option>
          <el-option label="Java56班" value="c003"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="姓名">
        <el-input v-model="studentVo.sname" placeholder="请输入姓名" clearable></el-input>
      </el-form-item>
      <el-form-item label="年龄">
        <el-col :span="11">
          <el-input v-model="studentVo.startAge" placeholder="请输入开始年龄" clearable></el-input>
        </el-col>
        <el-col class="line" :span="2">-</el-col>
        <el-col :span="11">
          <el-input v-model="studentVo.endAge" placeholder="请输入结束年龄" clearable></el-input>
        </el-col>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="condition(1)">查询</el-button>
      </el-form-item>
    </el-form>
    <!-- 表单end -->
    <!-- 表格start -->
    <el-table
      :data="studentPage.list"
      @selection-change="handleSelectionChange"
      style="width: 100%">
      <el-table-column
        type="selection"
        width="55">
      </el-table-column>
      <el-table-column
        prop="sid"
        label="编号"
        width="180">
      </el-table-column>
      <el-table-column
        prop="sname"
        label="姓名"
        width="180">
      </el-table-column>
      <el-table-column
        prop="cid"
        label="班级"
        width="180">
      </el-table-column>
      <el-table-column
        prop="age"
        label="年龄"
        width="180">
      </el-table-column>
      <el-table-column
        prop="birthday"
        label="生日"
        width="180">
      </el-table-column>
      <el-table-column
        prop="gender"
        label="性别"
        width="180">
        <template slot-scope="scope">
          {{scope.row.gender == 1 ? "男" : "女"}}
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-button size="mini">编辑</el-button>
          <el-button size="mini" type="danger">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 表格end -->
    <!-- 分页条start -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="studentPage.pageNum"
      :page-sizes="[1, 2, 3, 5, 10]"
      :page-size="studentPage.pageSize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="studentPage.total">
    </el-pagination>
    <!-- 分页条end -->
  </div>
</template>

<script>
// 导入axios
import axios from 'axios'
export default {
  data() {
    return {
      studentVo: {    //条件查询

      },
      studentPage: {    //分页数据
        pageNum: 1,
        pageSize: 3
      }
    }
  },
  methods: {
    async condition(num) {
      if(num) {
        this.studentPage.pageNum = num
      }
      // ajax查询
      var url = `http://localhost:8888/student/condition/${this.studentPage.pageSize}/${this.studentPage.pageNum}`
      let {data:baseResult} = await axios.post(url, this.studentVo)
      // 保存结果
      this.studentPage = baseResult.data
    },
    handleSelectionChange(val) {
      console.info('批量删除')
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
      this.studentPage.pageSize = val
      this.studentPage.pageNum = 1
      // 重新开始
      this.condition()
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
      this.studentPage.pageNum = val
      // 重新开始
      this.condition()
    }
  },
  mounted() {
    // 查询
    this.condition()
  },
}
</script>

<style>

</style>

导航(嵌套路由)

• 步骤1：创建页面

  • 创建登录页面（模板页面）

  • 编写首页Home（上中下布局），编写导航（首页、班级管理/班级列表、学生管理/学生列表）

  • 创建页面：ClassesList.vue

• 步骤2：配置路由

• 步骤3：编写布局容器和导航

步骤1：创建页面

• 创建登录页面（模板页面）

• 编写首页Home（上中下布局），编写导航（首页、班级管理/班级列表、学生管理/学生列表）

• 创建页面：ClassesList.vue

 步骤2：配置路由

const routes = [
  {
    path: '/',
    redirect: '/home'    //重定向
  },
  {
    path: '/login',
    name: '登录',
    component: () => import('../views/Login.vue')
  },
  {
    path: '/home',
    name: '首页',
    component: () => import('../views/Home.vue'),
    children: [
      {
        path: '/studentList',
        name: '学生列表',
        component: () => import('../views/StudentList.vue')
      },
      {
        path: '/classesList',
        name: '班级列表',
        component: () => import('../views/ClassesList.vue')
      }
    ]
  },
  
]

步骤3：编写布局容器和导航

• 修改main.js，配置css加载顺序（配置重置样式）

• 修改App.vue，配置样式，上下自动填充

编写Home页面，完成导航和二级路由显示

<template>
  <el-container>
    <el-header class="home-header">
      <!-- 导航start -->
      <el-menu
        :default-active="$route.path"
        router
        class="el-menu-demo"
        mode="horizontal"
        background-color="#545c64"
        text-color="#fff"
        active-text-color="#ffd04b">
        <el-menu-item index="/home">首页</el-menu-item>
        <el-submenu index="/classes">
          <template slot="title">班级管理</template>
          <el-menu-item index="/classesList">班级列表</el-menu-item>
        </el-submenu>
        <el-submenu index="/student">
          <template slot="title">学生管理</template>
          <el-menu-item index="/studentList">学生列表</el-menu-item>
        </el-submenu>
      </el-menu>
      <!-- 导航end -->
    </el-header>
    <el-main>
      <!-- 二级路由 -->
      <router-view></router-view>
    </el-main>
    <el-footer>学生管理系统Element UI 版</el-footer>
  </el-container>
</template>

<script>
export default {

}
</script>

<style>
  .el-container {
    height: 100%;
  }
  .home-header {
    padding: 0;
  }
  .el-header, .el-footer {
    background-color: #B3C0D1;
    color: #333;
    text-align: center;
    line-height: 60px;
  }
</style>

编辑学生(弹出框)

分析

• 页面布局：

  • 添加一个“添加”按钮，点击可以显示弹出层

  • 拷贝添加的弹出框Dialog，且要求表单（班级列表、id、名称、年龄、生日、性别）

• 提供student变量，用于表单数据的绑定

• ajax操作

  • 查询班级列表

  • 添加按钮绑定事件，进行ajax提交（成功：刷新列表关闭弹出框，失败：错误提示，但不关闭弹出框）

页面布局

页面布局：

添加一个“添加”按钮，点击可以显示弹出层

拷贝添加的弹出框Dialog，且要求表单（班级列表、id、名称、年龄、生日、性别）

 <!-- 添加的弹出框start -->
    <el-dialog title="添加学生" :visible.sync="addStudentDialogVisible">
      <el-form :model="student" label-width="80px">
        <el-form-item label="班级列表" >
          <el-select v-model="student.cid" placeholder="请选择班级">
            <el-option label="区域一" value="shanghai"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="id" >
          <el-input v-model="student.sid"></el-input>
        </el-form-item>
        <el-form-item label="名称" >
          <el-input v-model="student.sname"></el-input>
        </el-form-item>
        <el-form-item label="生日" >
          <el-date-picker type="date" placeholder="选择生日" v-model="student.birthday" style="width: 100%;"></el-date-picker>
        </el-form-item>
        <el-form-item label="年龄" >
          <el-input v-model="student.age"></el-input>
        </el-form-item>
        <el-form-item label="性别" >
          <el-radio-group v-model="student.gender">
            <el-radio label="1">男</el-radio>
            <el-radio label="0">女</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="addStudentDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addStudentDialogVisible = false">确 定</el-button>
      </div>
    </el-dialog>
    <!-- 添加的弹出框end -->

提供student变量，用于表单数据的绑定

添加：ajax操作

查询班级列表

添加按钮绑定事件，进行ajax提交（成功：刷新列表关闭弹出框，失败：错误提示，但不关闭弹出框）

<template>
  <div>
    <!-- 表单start -->
    <el-form :inline="true" :model="studentVo" size="mini" >
      <el-form-item label="班级">
        <el-select v-model="studentVo.cid" placeholder="请选择班级" clearable>
          <el-option v-for="(classes,index) in classesList" :key="index" :label="classes.cname" :value="classes.cid"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="姓名">
        <el-input v-model="studentVo.sname" placeholder="请输入姓名" clearable></el-input>
      </el-form-item>
      <el-form-item label="年龄">
        <el-col :span="11">
          <el-input v-model="studentVo.startAge" placeholder="请输入开始年龄" clearable></el-input>
        </el-col>
        <el-col class="line" :span="2">-</el-col>
        <el-col :span="11">
          <el-input v-model="studentVo.endAge" placeholder="请输入结束年龄" clearable></el-input>
        </el-col>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="condition(1)">查询</el-button>
      </el-form-item>
    </el-form>
    <!-- 表单end -->
    <el-button type="primary" @click="openAddDialog" >添加</el-button>
    <!-- 添加的弹出框start -->
    <el-dialog title="添加学生" :visible.sync="addStudentDialogVisible">
      <el-form :model="student" label-width="80px">
        <el-form-item label="班级列表" >
          <el-select v-model="student.cid" placeholder="请选择班级">
            <el-option v-for="(classes,index) in classesList" :key="index" :label="classes.cname" :value="classes.cid"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="id" >
          <el-input v-model="student.sid"></el-input>
        </el-form-item>
        <el-form-item label="名称" >
          <el-input v-model="student.sname"></el-input>
        </el-form-item>
        <el-form-item label="生日" >
          <el-date-picker type="date" placeholder="选择生日" v-model="student.birthday" style="width: 100%;"></el-date-picker>
        </el-form-item>
        <el-form-item label="年龄" >
          <el-input v-model="student.age"></el-input>
        </el-form-item>
        <el-form-item label="性别" >
          <el-radio-group v-model="student.gender">
            <el-radio label="1">男</el-radio>
            <el-radio label="0">女</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="addStudentDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addStudent">确 定</el-button>
      </div>
    </el-dialog>
    <!-- 添加的弹出框end -->
    <!-- 表格start -->
    <el-table
      :data="studentPage.list"
      @selection-change="handleSelectionChange"
      style="width: 100%">
      <el-table-column
        type="selection"
        width="55">
      </el-table-column>
      <el-table-column
        prop="sid"
        label="编号"
        width="180">
      </el-table-column>
      <el-table-column
        prop="sname"
        label="姓名"
        width="180">
      </el-table-column>
      <el-table-column
        prop="cid"
        label="班级"
        width="180">
      </el-table-column>
      <el-table-column
        prop="age"
        label="年龄"
        width="180">
      </el-table-column>
      <el-table-column
        prop="birthday"
        label="生日"
        width="180">
      </el-table-column>
      <el-table-column
        prop="gender"
        label="性别"
        width="180">
        <template slot-scope="scope">
          {{scope.row.gender == 1 ? "男" : "女"}}
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-button size="mini">编辑</el-button>
          <el-button size="mini" type="danger">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 表格end -->
    <!-- 分页条start -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="studentPage.pageNum"
      :page-sizes="[1, 2, 3, 5, 10]"
      :page-size="studentPage.pageSize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="studentPage.total">
    </el-pagination>
    <!-- 分页条end -->
  </div>
</template>

<script>
// 导入axios
import axios from 'axios'
export default {
  data() {
    return {
      studentVo: {    //条件查询

      },
      studentPage: {    //分页数据
        pageNum: 1,
        pageSize: 3
      },
      addStudentDialogVisible: false,     //添加弹出框的控制变量
      student: {        //添加表单对象

      },
      classesList: [],  // 所有班级
    }
  },
  methods: {
    async condition(num) {
      if(num) {
        this.studentPage.pageNum = num
      }
      // ajax查询
      var url = `http://localhost:8888/student/condition/${this.studentPage.pageSize}/${this.studentPage.pageNum}`
      let {data:baseResult} = await axios.post(url, this.studentVo)
      // 保存结果
      this.studentPage = baseResult.data
    },
    handleSelectionChange(val) {
      console.info('批量删除')
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
      this.studentPage.pageSize = val
      this.studentPage.pageNum = 1
      // 重新开始
      this.condition()
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
      this.studentPage.pageNum = val
      // 重新开始
      this.condition()
    },
    async selectAllClasses() {
      // ajax 查询所有的班级
      var url = `http://localhost:8888/classes`
      let { data: baseResult } = await axios.get(url)
      // 保存结果
      this.classesList = baseResult.data
    },
    openAddDialog() {
      // 打开弹出框
      this.addStudentDialogVisible = true
      // 清空表单数据
      this.student = {}
      // 查询班级列表
      this.selectAllClasses()
    },
    async addStudent() {
      // 添加学生ajax
      var url = `http://localhost:8888/student/saveOrUpdate`
      let { data: baseResult } = await axios.post(url, this.student)
      // 处理结果
      if(baseResult.code == 20000) {
        // 成功：刷新页面，成功提示，关闭弹出框
        this.condition()
        this.$message.success(baseResult.message)
        this.addStudentDialogVisible = false
      } else {
        // 失败：失败提示
        this.$message.error(baseResult.message)
      }
    }
  },
  mounted() {
    // 查询班级
    this.selectAllClasses()
    // 查询学生
    this.condition()
  },
}
</script>

<style>

</style>

修改：ajax操作

点击修改按钮，通过id查询详情，显示弹出框，并自动填充表单。

<template>
  <div>
    <!-- 表单start -->
    <el-form :inline="true" :model="studentVo" size="mini" >
      <el-form-item label="班级">
        <el-select v-model="studentVo.cid" placeholder="请选择班级" clearable>
          <el-option v-for="(classes,index) in classesList" :key="index" :label="classes.cname" :value="classes.cid"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="姓名">
        <el-input v-model="studentVo.sname" placeholder="请输入姓名" clearable></el-input>
      </el-form-item>
      <el-form-item label="年龄">
        <el-col :span="11">
          <el-input v-model="studentVo.startAge" placeholder="请输入开始年龄" clearable></el-input>
        </el-col>
        <el-col class="line" :span="2">-</el-col>
        <el-col :span="11">
          <el-input v-model="studentVo.endAge" placeholder="请输入结束年龄" clearable></el-input>
        </el-col>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="condition(1)">查询</el-button>
      </el-form-item>
    </el-form>
    <!-- 表单end -->
    <el-button type="primary" @click="openAddDialog" >添加</el-button>
    <!-- 添加的弹出框start -->
    <el-dialog :title="dialogTitle" :visible.sync="addStudentDialogVisible">
      <el-form :model="student" label-width="80px">
        <el-form-item label="班级列表" >
          <el-select v-model="student.cid" placeholder="请选择班级">
            <el-option v-for="(classes,index) in classesList" :key="index" :label="classes.cname" :value="classes.cid"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="id" >
          <el-input v-model="student.sid"></el-input>
        </el-form-item>
        <el-form-item label="名称" >
          <el-input v-model="student.sname"></el-input>
        </el-form-item>
        <el-form-item label="生日" >
          <el-date-picker type="date" placeholder="选择生日" v-model="student.birthday" style="width: 100%;"></el-date-picker>
        </el-form-item>
        <el-form-item label="年龄" >
          <el-input v-model="student.age"></el-input>
        </el-form-item>
        <el-form-item label="性别" >
          <el-radio-group v-model="student.gender">
            <el-radio label="1">男</el-radio>
            <el-radio label="0">女</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="addStudentDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addStudent">确 定</el-button>
      </div>
    </el-dialog>
    <!-- 添加的弹出框end -->
    <!-- 表格start -->
    <el-table
      :data="studentPage.list"
      @selection-change="handleSelectionChange"
      style="width: 100%">
      <el-table-column
        type="selection"
        width="55">
      </el-table-column>
      <el-table-column
        prop="sid"
        label="编号"
        width="180">
      </el-table-column>
      <el-table-column
        prop="sname"
        label="姓名"
        width="180">
      </el-table-column>
      <el-table-column
        prop="cid"
        label="班级"
        width="180">
      </el-table-column>
      <el-table-column
        prop="age"
        label="年龄"
        width="180">
      </el-table-column>
      <el-table-column
        prop="birthday"
        label="生日"
        width="180">
      </el-table-column>
      <el-table-column
        prop="gender"
        label="性别"
        width="180">
        <template slot-scope="scope">
          {{scope.row.gender == 1 ? "男" : "女"}}
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-button size="mini" @click="openUpdateDialog(scope.row.sid)">编辑</el-button>
          <el-button size="mini" type="danger">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 表格end -->
    <!-- 分页条start -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="studentPage.pageNum"
      :page-sizes="[1, 2, 3, 5, 10]"
      :page-size="studentPage.pageSize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="studentPage.total">
    </el-pagination>
    <!-- 分页条end -->
  </div>
</template>

<script>
// 导入axios
import axios from 'axios'
export default {
  data() {
    return {
      studentVo: {    //条件查询

      },
      studentPage: {    //分页数据
        pageNum: 1,
        pageSize: 3
      },
      addStudentDialogVisible: false,     //添加弹出框的控制变量
      student: {        //添加表单对象

      },
      classesList: [],  // 所有班级
      dialogTitle: '',  // 弹出框的标题
    }
  },
  methods: {
    async condition(num) {
      if(num) {
        this.studentPage.pageNum = num
      }
      // ajax查询
      var url = `http://localhost:8888/student/condition/${this.studentPage.pageSize}/${this.studentPage.pageNum}`
      let {data:baseResult} = await axios.post(url, this.studentVo)
      // 保存结果
      this.studentPage = baseResult.data
    },
    handleSelectionChange(val) {
      console.info('批量删除')
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
      this.studentPage.pageSize = val
      this.studentPage.pageNum = 1
      // 重新开始
      this.condition()
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
      this.studentPage.pageNum = val
      // 重新开始
      this.condition()
    },
    async selectAllClasses() {
      // ajax 查询所有的班级
      var url = `http://localhost:8888/classes`
      let { data: baseResult } = await axios.get(url)
      // 保存结果
      this.classesList = baseResult.data
    },
    openAddDialog() {
      // 设置标题
      this.dialogTitle = '添加学生'
      // 打开弹出框
      this.addStudentDialogVisible = true
      // 清空表单数据
      this.student = {}
      // 查询班级列表
      this.selectAllClasses()
    },
    async openUpdateDialog(sid) {
      // 设置标题
      this.dialogTitle = '修改学生'
      // 通过id查询详情
      var url = `http://localhost:8888/student/${sid}`
      let { data: baseResult } = await axios.get(url)
      this.student = baseResult.data
      // 查询班级列表
      this.selectAllClasses()
      // 打开弹出框
      this.addStudentDialogVisible = true
    },
    async addStudent() {
      // 添加学生ajax
      var url = `http://localhost:8888/student/saveOrUpdate`
      let { data: baseResult } = await axios.post(url, this.student)
      // 处理结果
      if(baseResult.code == 20000) {
        // 成功：刷新页面，成功提示，关闭弹出框
        this.condition()
        this.$message.success(baseResult.message)
        this.addStudentDialogVisible = false
      } else {
        // 失败：失败提示
        this.$message.error(baseResult.message)
      }
    }
  },
  mounted() {
    // 查询班级
    this.selectAllClasses()
    // 查询学生
    this.condition()
  },
}
</script>

<style>

</style>

源码获取

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