JavaEE——作业管理系统

基于Springboot的简易学生作业管理系统

目录

一、大概介绍下项目结构:

二、项目结构图

三、页面实现

3.1身份为学生的页面实现效果（权限=1）

3.1.1登录

3.1.2注册

3.1.3登录成功

3.1.4查看学生名单

3.1.5学生管理作业（可提交、更新、删除作业）

3.1.6学生更新作业

3.1.7学生提交作业

3.2身份为教师的页面实现效果（权限=0）

3.2.1登录

3.2.2注册

3.2.3登录成功

3.2.4教师管理学生名单（可添加学生、更改学生信息、删除学生信息）

3.2.5教师更改学生信息

3.2.6教师添加学生

3.2.7教师管理作业

3.2.8教师更改作业信息

3.2.9教师布置新作业

3.2.10教师检查已提交的作业

四、代码解析

使用学生操作进行解析（教师和用户操作与学生操作大同小异）

实体类——model：Student

4.1表结构

4.2实体类

4.3mapper类

4.4mapper.xml

4.5service类

4.6controller类

4.7登录成功代码

4.8学生查看学生名单

4.9学生管理作业

4.10学生更改作业

4.11学生提交作业

五、Git地址

---

一、大概介绍下项目结构:

• 持久层框架使用的是：Mybatis(配置 .xml文件版)
• 使用了RESTful：通过GET,POST请求实现各种功能
• 模板引擎使用的是：Thymeleaf
• 数据库使用的是：Mysql
• 数据访问使用的是：Spring Data JPA

---

二、项目结构图

---

三、页面实现

3.1身份为学生的页面实现效果（权限=1）

3.1.1登录

3.1.2注册

3.1.3登录成功

3.1.4查看学生名单

3.1.5学生管理作业（可提交、更新、删除作业）

3.1.6学生更新作业

3.1.7学生提交作业

---

3.2身份为教师的页面实现效果（权限=0）

3.2.1登录

3.2.2注册

3.2.3登录成功

3.2.4教师管理学生名单（可添加学生、更改学生信息、删除学生信息）

3.2.5教师更改学生信息

3.2.6教师添加学生

3.2.7教师管理作业

3.2.8教师更改作业信息

3.2.9教师布置新作业

3.2.10教师检查已提交的作业

---

四、代码解析

使用学生操作进行解析（教师和用户操作与学生操作大同小异）

实体类——model：Student

4.1表结构

4.2实体类

在com.example.demo.model包中新建一个类，命名为Student.java。

package com.example.demo.model;

public class Student {

    int stuid;
    String stuname;

    public int getStuid() {
        return stuid;
    }

    public void setStuid(int stuid) {
        this.stuid = stuid;
    }

    public String getStuname() {
        return stuname;
    }

    public void setStuname(String stuname) {
        this.stuname = stuname;
    }

    @Override
    public String toString() {
        return "Student{" +
                "stuid=" + stuid +
                ", stuname='" + stuname + '\'' +
                '}';
    }
}

4.3mapper类

在com.example.demo.mapper包中新建一个类，编写mapper接口（Studentmapper.java）。

package com.example.demo.mapper;

import com.example.demo.model.Student;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface Studentmapper {

    List<Student> selectStudent();
    public void insertStudent(@Param("stuid")int stuid, @Param("stuname")String stuname);

    Student findstudentById(int stuid);

    int updateStudent(Student student);

    int deleteStudent(int stuid);
}

4.4mapper.xml

写了接口之后在resource下新建一个mapping文件夹，用于存放映射文件新建studentmapper.xml文件。

<?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="com.example.demo.mapper.Studentmapper">

    <!--新增-->
    <insert id="insertStudent">
        insert into student (stuid,stuname) values (#{stuid},#{stuname});
    </insert>

    <select id="selectStudent" resultType="Student">
        select stuid,stuname from student;
    </select>

    <select id="findstudentById" resultType="Student">
        select * from student where stuid=#{stuid}
    </select>

    <update id="updateStudent" parameterType="Student">
        update student set stuname=#{stuname} where stuid=#{stuid};
    </update>

    <delete id="deleteStudent" parameterType="int">
        delete from student where stuid=#{stuid};
    </delete>
</mapper>

在application.properties中添加配置扫描映射文件和实体类

mybatis.type-aliases-package=com.example.demo.model
mybatis.mapper-locations=classpath:/mapper/*.xml

4.5service类

在com.example.demo.service包中新建一个StudentService类，编写业务层了（StudentService.java）,直接在新建StudentService类来写业务。

package com.example.demo.service;

import com.example.demo.mapper.Studentmapper;
import com.example.demo.model.Student;
import com.example.demo.model.StudentHomework;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class StudentService {
    @Autowired
    Studentmapper studentmapper;

    public boolean insertStudent(int stuid,String stuname){
        studentmapper.insertStudent(stuid,stuname);
        return true;
    }

    public List<Student> selectStudent(){
        return studentmapper.selectStudent();
    }

    public Student findstudentById(int stuid){

        return studentmapper.findstudentById(stuid);
    }

    public int updateStudent(Student student){
        return studentmapper.updateStudent(student);
    }

    public int deleteStudent(int stuid){
        return studentmapper.deleteStudent(stuid);
    }
}

4.6controller类

编写完业务之后就是编写控制器：在com.example.demo.controller包中新建一个StudentController.java

使用Restful：用@GetMapping、@PostMapping取代了@RequestMapping相当于增加了method=“GET”等内容，根据请求方法映射到不同的方法。

package com.example.demo.controller;

import com.example.demo.model.Homework;
import com.example.demo.model.Student;
import com.example.demo.model.StudentHomework;
import com.example.demo.service.HomeworkService;
import com.example.demo.service.StudentHomeworkService;
import com.example.demo.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Map;

@Controller

public class StudentController {

    @Autowired
    StudentHomeworkService studentHomeworkService;

    @RequestMapping("/addstudenthomework")
    public String addstudenthomework(){
        return "addstudenthomework";
    }

    @RequestMapping("/doaddstudenthomework")
    public String doaddstudenthomework(StudentHomework studentHomework, Map<String,Object> map){
        studentHomeworkService.insertStudentHomework(studentHomework.getStuid(),studentHomework.getHomeworkid(),studentHomework.getHomeworktitle(),studentHomework.getHomeworkContent());
        map.put("msg","添加成功");
        return "student";
    }

    @GetMapping("/updatepage/{id}")
    public String updatepage(Model model, @PathVariable int id){
        StudentHomework studentHomework=studentHomeworkService.findById(id);
        model.addAttribute("studenthomework",studentHomework);
        return "updatepage";
    }
    @PostMapping("/update")
    public String updatestudenthomework(StudentHomework studentHomework){
        studentHomeworkService.updateStudentHomework(studentHomework);
        return "student";
    }

    @GetMapping("/delete/{id}")
    public String deletestudenthomework(@PathVariable int id){
        studentHomeworkService.deleteStudentHomework(id);
        return "student";
    }

    @Autowired
    HomeworkService homeworkService;

    @RequestMapping("/showhomework1")
    public String selectHomework(Model model){
        List<Homework> homework=homeworkService.selectHomework();
        model.addAttribute("homework",homework);

        List<StudentHomework> studentHomeworks=studentHomeworkService.selectStudentHomework();
        model.addAttribute("studenthomework",studentHomeworks);

        return "showhomework1";
    }

    @Autowired
    StudentService studentService;

    @RequestMapping("/showstu1")
    public String selectStudent(Model model){
        List<Student> students=studentService.selectStudent();
        model.addAttribute("students",students);
        return "showstu1";
    }
}

4.7登录成功代码

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>学生界面</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" th:href="@{/css/style.css}"/>
</head>
<body class="back1" align="center">

<div style="margin-top: 50px"></div>
<h1 >欢迎同学进入</h1>

<div align="center">
    <fieldset class="field">
        <legend><h3>学生可使用的功能：&nbsp&nbsp</h3></legend>
        <ul type="none">
            <li class="li">1、提交作业</li>
            <li class="li">2、查看学生名单<br></li>
            <li class="li">3、查看已布置的作业<br></li>
            <li class="li">4、更新作业/删除作业<br></li>
        </ul>
    </fieldset>
</div>

<div>
    <a href="/showstu1" target="_blank">
        <button type="button" class="button">学生名单</button>
    </a>

    <br />
    <a href="/showhomework1" target="_blank">
        <button type="button" class="button">提交作业</button>
    </a>
</div>

</body>
</html>

4.8学生查看学生名单

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>学生查看学生名单</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" th:href="@{/css/style.css}"/>
</head>
<body class="back1">
<table border="0" class="table1" align="center" cellspacing="15px">
    <h3 align="center">学生名单</h3>
    <tr class="tr">
        <th class="th">学生学号</th>
        <th class="th">学生姓名</th>
    </tr>
    <tr th:each="user : ${students}" class="tr">
        <td th:text="${user.stuid}" class="td"></td>
        <td th:text="${user.stuname}" class="td"></td>
    </tr>
</table>
</body>
</html>

4.9学生管理作业

<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>学生管理作业</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" th:href="@{/css/style.css}"/>
</head>
<body class="back1">

<div class="left">
    <h3 align="center">已布置的作业</h3>
    <table border="0" class="table1"  cellspacing="15px">
        <tr class="tr">
            <th class="th">作业编号</th>
            <th class="th">作业题目</th>
        </tr>
        <tr th:each="user : ${homework}" class="tr">
            <td th:text="${user.homeworkid}" class="td"></td>
            <td th:text="${user.homeworktitle}" class="td"></td>
        </tr>
    </table>
</div>

<div class="right">
    <h3 align="center">提交作业</h3>
    <table border="0" class="table1"  cellspacing="15px">
        <tr class="tr">
            <th class="th">学生学号</th>
            <th  class="th" style="width: 100px">作业编号</th>
            <th class="th">作业题目</th>
            <th class="th">作业内容</th>
            <th width="80px" class="th"></th>
        </tr>
        <tr th:each="user : ${studenthomework}" class="tr">
            <td th:text="${user.stuid}" class="td"></td>
            <td th:text="${user.homeworkid}" class="td"></td>
            <td th:text="${user.homeworktitle}" class="td"></td>
            <td th:text="${user.homeworkContent}" class="td"></td>
            <td class="td">
                <a  th:href="@{'/updatepage/'+${user.id}}" >更改</a>
                <a th:href="@{'/delete/'+${user.id}}">删除</a>
            </td>
        </tr>
    </table>
    <a href="/addstudenthomework">
        <button type="button" class="button">提交作业</button>
    </a>
</div>


</body>
</html>

4.10学生更改作业

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>学生更新作业</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" th:href="@{/css/style.css}"/>
</head>
<body class="back1"align="center">

<div style="margin-top: 100px">
    <h1 align="center">更新作业进行中...</h1>
</div>

<div align="center" style="margin-top: 20px">
    <form action="/update" method="post">

        <div style="margin-top: 20px">
            <label class="label">&nbsp&nbsp&nbsp&nbsp&nbsp&nbspI&nbsp&nbsp&nbsp&nbspD：</label>
            <input  name="id" type="text" th:value="${studenthomework.id}" readonly="readonly" style="height: 25px"><br>
        </div>

        <div style="margin-top: 20px">
            <label class="label">学生学号：</label>
            <input  type="text" th:value="${studenthomework.stuid}" name="stuid" style="height: 25px"><br>
        </div>

        <div style="margin-top: 20px">
            <label class="label">作业编号：</label>
            <input  type="text" th:value="${studenthomework.homeworkid}" name="homeworkid" style="height: 25px"><br>
        </div>

        <div style="margin-top: 20px">
            <label class="label">作业题目：</label>
            <input  type="text" th:value="${studenthomework.homeworktitle}" name="homeworktitle" style="height: 25px"><br>
        </div>

        <div style="margin-top: 20px">
            <label class="label">作业内容：</label>
            <input type="text" th:value="${studenthomework.homeworkContent}" name="homeworkContent" style="height: 25px"><br>
        </div>
        <button  type="submit" class="button">提交</button>
    </form>
</div>

</body>
</html>

4.11学生提交作业

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>学生提交作业</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" th:href="@{/css/style.css}"/>
</head>
<body align="center" class="back1">
<form name="form" accept-charset="utf-8"  action="/doaddstudenthomework">

    <div style="margin-top: 100px">
        <h1 align="center">提交作业进行中...</h1>
    </div>

    <div style="margin: 20px">
        <label  class="label">学生学号：</label>
        <input type="text" id="stuid" name="stuid" maxlength="16" />
    </div>
    <div style="margin: 20px">
        <label  class="label">作业编号：</label>
        <input type="text" id="homeworkid" name="homeworkid" maxlength="16" />
    </div>

    <div style="margin: 20px">
        <label class="label">作业题目：</label>
        <input type="text" id="homeworktitle"  name="homeworktitle" maxlength="20"/>
    </div>

    <div style="margin: 20px">
        <label  class="label">作业内容：</label>
        <input type="text" id="homeworkContent" name="homeworkContent" maxlength="100" />
    </div>

    <div style="margin-top: 20px">
        <input type="submit" value="确定" class="button"/>
    </div>

</form>
</body>
</html>

五、Git地址

https://github.com/lovelycoder0/javaee016.git