Vue项目之学生管理系统实例详解

目录

• 查询学生
• 添加学生
• 修改学生
• 删除学生
• 总结

查询学生

步骤1：设置导航

步骤2：添加路由

步骤3：创建页面

步骤：

• 步骤1：准备2个变量（pageInfo、studentVo）
• 步骤2：编写查询condition函数，接收参数num
• 步骤3：页面加载成功时，查询第一页
• 步骤4：遍历结果

<template>
    <div>
        班级： <select v-model = "studentVo.cid">
            <option value="" disabled>--请选择--</option>
            <option :value="classes.cid" v-for = "(classes,index) in classesList" :key = "index">{{classes.cname}}</option>
        </select>
        姓名：<input type="text" v-model = "studentVo.studentName">
        年龄：<input type="text" v-model = "studentVo.startAge">——<input type="text" v-model = "studentVo.endAge">
        <input type="button" value = "查询" @click = "conditionStudent()">
        <table border="1">
            <tr>
                <td>ID</td>
                <td>班级</td>
                <td>姓名</td>
                <td>年龄</td>
                <td>生日</td>
                <td>性别</td>
                <td>操作</td>
            </tr>
            <tr v-for = "(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}</td>
                <td>{{student.classes == null ? student.cname : student.classes.cname}}</td>
                <td>{{student.sname}}</td>
                <td>{{student.age}}</td>
                <td>{{student.birthday}}</td>
                <td>{{student.gender == 1 ? '男' : '女'}}</td>
                <td>
                    <router-link :to="{path:'/studentEdit',query:{sid : student.sid}}">修改</router-link>
                    <router-link to="" @click.native.prevent = "deleteStudent(student.sid)">删除</router-link>
                </td>
            </tr>
        </table>
        <!-- 分页 start -->
        当前第 {{pageInfo.pageNum}}页，共{{pageInfo.pages}}页, 总计数{{pageInfo.total}}条,
        每页 <select v-model = "pageInfo.pageSize" @change = "conditionStudent(1)">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="5">5</option>
            <option value="10">10</option>
        </select>条
        <a href="" v-if = "!pageInfo.isFirstPage" @click.prevent = "conditionStudent(1)">首页</a>
        <a href="" v-if = "pageInfo.hasPreviousPage" @click.prevent = "conditionStudent(pageInfo.pageNum - 1)">上一页</a>
        <a href="" v-for = "(num,index) in pageInfo.pages" @click.prevent = "conditionStudent(num)" :key="index">{{num}}</a>
        <a href="" v-if = "pageInfo.hasNextPage" @click.prevent = "conditionStudent(pageInfo.pageNum - 1)">下一页</a>
        <a href="" v-if = "!pageInfo.isLastPage" @click.prevent = "conditionStudent(pageInfo.pages)">尾页</a>
        跳转到 <input v-model = "pageInfo.pageNum" placeholder="enter跳转" @keyup.enter = "conditionStudent()"> 页
        <!-- 分页 end -->
    </div>
</template>
<script>
import axios from 'axios'
export default {
    data() {
        return {
            classesList:[],
            studentVo: {
                cid:''
            },
            pageInfo:{
                pageNum:1,
                pageSize:2
            }
        }
    },
    methods:{
        async selectClasses(){
            let { data: baseResult } = await axios.get("http://localhost:8888/classes");
            this.classesList = baseResult.data
        },
        async conditionStudent(num){
            if(num){
                this.pageInfo.pageNum = num
            }
            var url = `http://localhost:8888/student/condition/${this.pageInfo.pageSize}/${this.pageInfo.pageNum}`;
            let {data: baseResult} = await axios.post(url,this.studentVo);
            this.pageInfo = baseResult.data
        },
    },
    mounted(){
        //查询所有班级
        this.selectClasses();
        //查询所有学生
        this.conditionStudent();
    }
}
</script>
<style>
</style>

添加学生

步骤1：设置导航

步骤2：添加路由

步骤3：创建页面

步骤：

• 创建数据 班级数组 和 学生对象
• 班级数据跟select绑定 table绑定学生对象
• 发送post请求添加学生

<template>
  <div>
    <table border="1">
      <tr>
        <td>ID</td>
        <td>
          <input type="text" v-model = "student.sid">
        </td>
      </tr>
      <tr>
        <td>班级</td>
        <td>
          <select v-model = "student.cid">
            <option value="">--请选择--</option>
            <option :value="classes.cid" v-for = "(classes,index) in classesList" :key="index">{{classes.cname}}</option>
          </select>
        </td>
      </tr>
      <tr>
        <td>姓名</td>
        <td>
          <input type="text" v-model = "student.sname">
        </td>
      </tr>
      <tr>
        <td>年龄</td>
        <td>
          <input type="text" v-model = "student.age">
        </td>
      </tr>
      <tr>
        <td>生日</td>
        <td>
          <input type="date" v-model = "student.birthday">
        </td>
      </tr>
      <tr>
        <td>性别</td>
        <td>
          <input type="radio" v-model = "student.gender" value = "1"> 男
          <input type="radio" v-model = "student.gender" value = "0"> 女
        </td>
      </tr>
      <tr>
        <td colspan="2">
          <input type="button" value = "添加学生" @click = "addStudent()">
        </td>
      </tr>
    </table>
  </div>
</template>
<script>
import axios from 'axios'
export default {
  data() {
    return {
      classesList:[],
      student:{}
    }
  },
  methods:{
      async selectClasses(){
        let {data:baseResult} = await axios.get(`http://localhost:8888/classes`);
        this.classesList = baseResult.data
      },
      async addStudent(){
        var url = "http://localhost:8888/student";
        let { data: baseResult } = await axios.post(url,this.student);
        if(baseResult.code == 20000){
            this.$router.push('/studentList')
        }else{
          alert(baseResult.message)
        }
      }
  },
  mounted(){
    //查询所有班级
    this.classesList = this.selectClasses();
  }
}
</script>
<style>
</style>

修改学生

步骤1：设置导航

步骤2：添加路由

步骤3：创建页面

步骤：

• 先获得路由传参传过来的参数 存储到data数据区域 cid
• 根据cid查询到学生 存储到student table对student进行数据双向关联
• 修改学生信息 发送ajax请求

<template>
    <div>
        <table border = "1">
            <tr>
                <td>编号</td>
                <td>
                    {{ classes.cid }}
                </td>
            </tr>
            <tr>
                <td>班级名称</td>
                <td>
                    <input type="text" v-model = "classes.cname">
                </td>
            </tr>
            <tr>
                <td>班级描述</td>
                <td>
                    <textarea name="" id="" cols="30" rows="10" v-model = "classes.desc"></textarea>
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <input type="text" value = "修改" @click = "editClasses()">
                </td>
            </tr>
        </table>
    </div>
</template>
<script>
import axios from 'axios';
export default {
    data() {
        return {
            classes:{},
            cid:'',
        };
    },
    methods:{
        async selectClassesById(){
            let url = `http://localhost:8888/classes/${this.cid}`;
            let { data: baseResult } = await axios.get(url);
            this.classes = baseResult.data
        },
        async editClasses(){
            var url = `http://localhost:8888/classes`;
            let { data: baseResult } = await axios.put(url,this.classes);
            if(baseResult.code == 20000){
                this.$router.push("/classesList");
            }else{
                alert(baseResult.message);
            }
        }
    },
    mounted(){
        //获得cid
        this.cid = this.$route.params.cid;
        //根据id查询班级信息
        this.selectClassesById();
    }
}
</script>
<style>
</style>

删除学生

步骤1：设置导航

步骤2：添加方法

步骤：

• 根据cid发送ajax删除学生

<template>
    <div>
        班级： <select v-model = "studentVo.cid">
            <option value="" disabled>--请选择--</option>
            <option :value="classes.cid" v-for = "(classes,index) in classesList" :key = "index">{{classes.cname}}</option>
        </select>
        姓名：<input type="text" v-model = "studentVo.studentName">
        年龄：<input type="text" v-model = "studentVo.startAge">——<input type="text" v-model = "studentVo.endAge">
        <input type="button" value = "查询" @click = "conditionStudent()">
        <table border="1">
            <tr>
                <td>ID</td>
                <td>班级</td>
                <td>姓名</td>
                <td>年龄</td>
                <td>生日</td>
                <td>性别</td>
                <td>操作</td>
            </tr>
            <tr v-for = "(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}</td>
                <td>{{student.classes == null ? student.cname : student.classes.cname}}</td>
                <td>{{student.sname}}</td>
                <td>{{student.age}}</td>
                <td>{{student.birthday}}</td>
                <td>{{student.gender == 1 ? '男' : '女'}}</td>
                <td>
                    <router-link :to="{path:'/studentEdit',query:{sid : student.sid}}">修改</router-link>
                    <router-link to="" @click.native.prevent = "deleteStudent(student.sid)">删除</router-link>
                </td>
            </tr>
        </table>
        <!-- 分页 start -->
        当前第 {{pageInfo.pageNum}}页，共{{pageInfo.pages}}页, 总计数{{pageInfo.total}}条,
        每页 <select v-model = "pageInfo.pageSize" @change = "conditionStudent(1)">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="5">5</option>
            <option value="10">10</option>
        </select>条
        <a href="" v-if = "!pageInfo.isFirstPage" @click.prevent = "conditionStudent(1)">首页</a>
        <a href="" v-if = "pageInfo.hasPreviousPage" @click.prevent = "conditionStudent(pageInfo.pageNum - 1)">上一页</a>
        <a href="" v-for = "(num,index) in pageInfo.pages" @click.prevent = "conditionStudent(num)" :key="index">{{num}}</a>
        <a href="" v-if = "pageInfo.hasNextPage" @click.prevent = "conditionStudent(pageInfo.pageNum - 1)">下一页</a>
        <a href="" v-if = "!pageInfo.isLastPage" @click.prevent = "conditionStudent(pageInfo.pages)">尾页</a>
        跳转到 <input v-model = "pageInfo.pageNum" placeholder="enter跳转" @keyup.enter = "conditionStudent()"> 页
        <!-- 分页 end -->
    </div>
</template>
<script>
import axios from 'axios'
export default {
    data() {
        return {
            classesList:[],
            studentVo: {
                cid:''
            },
            pageInfo:{
                pageNum:1,
                pageSize:2
            }
        }
    },
    methods:{
        async selectClasses(){
            let { data: baseResult } = await axios.get("http://localhost:8888/classes");
            this.classesList = baseResult.data
        },
        async conditionStudent(num){
            if(num){
                this.pageInfo.pageNum = num
            }
            var url = `http://localhost:8888/student/condition/${this.pageInfo.pageSize}/${this.pageInfo.pageNum}`;
            let {data: baseResult} = await axios.post(url,this.studentVo);
            this.pageInfo = baseResult.data
        },
        async deleteStudent(sid){
            if(!confirm("您确定要删除么？")){
                return
            }
            let {data : baseResult} = await axios.delete(`http://localhost:8888/student/${sid}`)
            if(baseResult.code == 20000){
                this.conditionStudent(1);
            }else {
                    alert(baseResult.message)
            }
        }
    },
    mounted(){
        //查询所有班级
        this.selectClasses();
        //查询所有学生
        this.conditionStudent();
    }
}
</script>
<style>
</style>

后端

链接：https://pan.baidu.com/s/1GlS7hxzuwttHAp8bh1fbKQ

密码：hvac

后端部分代码：

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;
/**
 * @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());
        }
    }
}

总结

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