作者：计算机学长阿伟
开发技术：SpringBoot、SSM、Vue、MySQL、ElementUI等，“文末源码”。
开发运行环境
- 开发语言：Java
- 数据库：MySQL
- 技术：SpringBoot、Vue、Mybaits Plus、ELementUI
- 工具：IDEA/Ecilpse、Navicat、Maven
源码下载地址：
Java项目-基于springboot框架的学习选课系统项目实战(附源码+文档)资源-CSDN文库
一、项目简介
学生选课系统是一个面向学生和教师的在线选课平台，其设计简洁明了，便于用户快速上手。系统以绿色和白色为主色调，营造出清新舒适的视觉体验。在页面顶部，系统标题清晰明了，导航栏则提供了多个功能选项卡，如“个人信息”、“课程管理”等，用户可以通过点击这些选项卡来访问相应的功能区域。整个系统提供了包括修改密码、学生管理、教师管理、课程信息管理、选课信息管理、作业信息管理以及学生成绩管理等一系列实用功能，全面满足用户在使用过程中的各种需求。
二、系统项目部分截图
2.1后台系统部分页面效果
三、部分核心代码
package com.controller;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import com.utils.ValidatorUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.annotation.IgnoreAuth;
import com.entity.JiaoshiEntity;
import com.entity.view.JiaoshiView;
import com.service.JiaoshiService;
import com.service.TokenService;
import com.utils.PageUtils;
import com.utils.R;
import com.utils.MD5Util;
import com.utils.MPUtil;
import com.utils.CommonUtil;
import java.io.IOException;
/**
* 教师
* 后端接口
*/
@RestController
@RequestMapping("/jiaoshi")
public class JiaoshiController {
@Autowired
private JiaoshiService jiaoshiService;
@Autowired
private TokenService tokenService;
/**
* 登录
*/
@IgnoreAuth
@RequestMapping(value = "/login")
public R login(String username, String password, String captcha, HttpServletRequest request) {
JiaoshiEntity user = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("gonghao", username));
if(user==null || !user.getMima().equals(password)) {
return R.error("账号或密码不正确");
}
String token = tokenService.generateToken(user.getId(), username,"jiaoshi", "教师" );
return R.ok().put("token", token);
}
/**
* 注册
*/
@IgnoreAuth
@RequestMapping("/register")
public R register(@RequestBody JiaoshiEntity jiaoshi){
//ValidatorUtils.validateEntity(jiaoshi);
JiaoshiEntity user = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("gonghao", jiaoshi.getGonghao()));
if(user!=null) {
return R.error("注册用户已存在");
}
Long uId = new Date().getTime();
jiaoshi.setId(uId);
jiaoshiService.insert(jiaoshi);
return R.ok();
}
/**
* 退出
*/
@RequestMapping("/logout")
public R logout(HttpServletRequest request) {
request.getSession().invalidate();
return R.ok("退出成功");
}
/**
* 获取用户的session用户信息
*/
@RequestMapping("/session")
public R getCurrUser(HttpServletRequest request){
Long id = (Long)request.getSession().getAttribute("userId");
JiaoshiEntity user = jiaoshiService.selectById(id);
return R.ok().put("data", user);
}
/**
* 密码重置
*/
@IgnoreAuth
@RequestMapping(value = "/resetPass")
public R resetPass(String username, HttpServletRequest request){
JiaoshiEntity user = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("gonghao", username));
if(user==null) {
return R.error("账号不存在");
}
user.setMima("123456");
jiaoshiService.updateById(user);
return R.ok("密码已重置为：123456");
}
/**
* 后端列表
*/
@RequestMapping("/page")
public R page(@RequestParam Map<String, Object> params,JiaoshiEntity jiaoshi,
HttpServletRequest request){
EntityWrapper<JiaoshiEntity> ew = new EntityWrapper<JiaoshiEntity>();
PageUtils page = jiaoshiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, jiaoshi), params), params));
return R.ok().put("data", page);
}
/**
* 前端列表
*/
@IgnoreAuth
@RequestMapping("/list")
public R list(@RequestParam Map<String, Object> params,JiaoshiEntity jiaoshi,
HttpServletRequest request){
EntityWrapper<JiaoshiEntity> ew = new EntityWrapper<JiaoshiEntity>();
PageUtils page = jiaoshiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, jiaoshi), params), params));
return R.ok().put("data", page);
}
/**
* 列表
*/
@RequestMapping("/lists")
public R list( JiaoshiEntity jiaoshi){
EntityWrapper<JiaoshiEntity> ew = new EntityWrapper<JiaoshiEntity>();
ew.allEq(MPUtil.allEQMapPre( jiaoshi, "jiaoshi"));
return R.ok().put("data", jiaoshiService.selectListView(ew));
}
/**
* 查询
*/
@RequestMapping("/query")
public R query(JiaoshiEntity jiaoshi){
EntityWrapper< JiaoshiEntity> ew = new EntityWrapper< JiaoshiEntity>();
ew.allEq(MPUtil.allEQMapPre( jiaoshi, "jiaoshi"));
JiaoshiView jiaoshiView = jiaoshiService.selectView(ew);
return R.ok("查询教师成功").put("data", jiaoshiView);
}
/**
* 后端详情
*/
@RequestMapping("/info/{id}")
public R info(@PathVariable("id") Long id){
JiaoshiEntity jiaoshi = jiaoshiService.selectById(id);
return R.ok().put("data", jiaoshi);
}
/**
* 前端详情
*/
@IgnoreAuth
@RequestMapping("/detail/{id}")
public R detail(@PathVariable("id") Long id){
JiaoshiEntity jiaoshi = jiaoshiService.selectById(id);
return R.ok().put("data", jiaoshi);
}
/**
* 后端保存
*/
@RequestMapping("/save")
public R save(@RequestBody JiaoshiEntity jiaoshi, HttpServletRequest request){
jiaoshi.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());
//ValidatorUtils.validateEntity(jiaoshi);
JiaoshiEntity user = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("gonghao", jiaoshi.getGonghao()));
if(user!=null) {
return R.error("用户已存在");
}
jiaoshi.setId(new Date().getTime());
jiaoshiService.insert(jiaoshi);
return R.ok();
}
/**
* 前端保存
*/
@RequestMapping("/add")
public R add(@RequestBody JiaoshiEntity jiaoshi, HttpServletRequest request){
jiaoshi.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());
//ValidatorUtils.validateEntity(jiaoshi);
JiaoshiEntity user = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("gonghao", jiaoshi.getGonghao()));
if(user!=null) {
return R.error("用户已存在");
}
jiaoshi.setId(new Date().getTime());
jiaoshiService.insert(jiaoshi);
return R.ok();
}
/**
* 修改
*/
@RequestMapping("/update")
@Transactional
public R update(@RequestBody JiaoshiEntity jiaoshi, HttpServletRequest request){
//ValidatorUtils.validateEntity(jiaoshi);
jiaoshiService.updateById(jiaoshi);//全部更新
return R.ok();
}
/**
* 删除
*/
@RequestMapping("/delete")
public R delete(@RequestBody Long[] ids){
jiaoshiService.deleteBatchIds(Arrays.asList(ids));
return R.ok();
}
/**
* 提醒接口
*/
@RequestMapping("/remind/{columnName}/{type}")
public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request,
@PathVariable("type") String type,@RequestParam Map<String, Object> map) {
map.put("column", columnName);
map.put("type", type);
if(type.equals("2")) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
Date remindStartDate = null;
Date remindEndDate = null;
if(map.get("remindstart")!=null) {
Integer remindStart = Integer.parseInt(map.get("remindstart").toString());
c.setTime(new Date());
c.add(Calendar.DAY_OF_MONTH,remindStart);
remindStartDate = c.getTime();
map.put("remindstart", sdf.format(remindStartDate));
}
if(map.get("remindend")!=null) {
Integer remindEnd = Integer.parseInt(map.get("remindend").toString());
c.setTime(new Date());
c.add(Calendar.DAY_OF_MONTH,remindEnd);
remindEndDate = c.getTime();
map.put("remindend", sdf.format(remindEndDate));
}
}
Wrapper<JiaoshiEntity> wrapper = new EntityWrapper<JiaoshiEntity>();
if(map.get("remindstart")!=null) {
wrapper.ge(columnName, map.get("remindstart"));
}
if(map.get("remindend")!=null) {
wrapper.le(columnName, map.get("remindend"));
}
int count = jiaoshiService.selectCount(wrapper);
return R.ok().put("count", count);
}
}
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