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文章目录

• 摘要
• 一、开发技术介绍
• 二、功能介绍
• 三、代码展示
• 四、效果图
• 五 、源码获取

摘要

随着社会的发展，系统的管理形势越来越严峻。越来越多的用户利用互联网获得信息，但各种信息鱼龙混杂，信息真假难以辨别。为了方便用户更好的获得在线考试信息，因此，设计一种安全高效的在线考试系统极为重要。

为设计一个安全便捷，并且使用户更好获取在线考试信息，本文主要有安全、简洁为理念，实现用户快捷寻找在线考试信息，从而解决在线考试信息管理复杂难辨的问题。该系统采用java语言、Spring Boot框架和mysql数据库进行开发设计，通过对在线考试管理业务流程的分析，分析了其功能性需求，设计了在线考试系统，该系统包括管理员和教师、学生三部分。同时还能为用户提供一个方便实用的在线考试系统，使得用户能够及时地找到合适自己的在线考试系统。管理员界面管理教师、学生的信息，也可以对系统上的所有信息进行修删查等操作，用户通过本系统可以及时了解在线考试信息。

关键词：在线考试系统；java语言；mysql数据库；

一、开发技术介绍

• Java
• SpringBoot
• MySQL
• MyBatis

二、功能介绍

本次系统采用springboot框架进行开发，springboot框架是一款企业界主流的软件开发技术，其简化了开发流程，大大缩减了软件开发所需的时间提高了软件的响应速度。系统总体结构图如图4-1所示。

三、代码展示

package com.cl.controller;import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.text.ParseException;
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.cl.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.cl.annotation.IgnoreAuth;import com.cl.entity.JiaoshiEntity;
import com.cl.entity.view.JiaoshiView;import com.cl.service.JiaoshiService;
import com.cl.service.TokenService;
import com.cl.utils.PageUtils;
import com.cl.utils.R;
import com.cl.utils.MPUtil;
import com.cl.utils.CommonUtil;
import java.io.IOException;/*** 教师* 后端接口* @author * @email */
@RestController
@RequestMapping("/jiaoshi")
public class JiaoshiController {@Autowiredprivate JiaoshiService jiaoshiService;@Autowiredprivate TokenService tokenService;/*** 登录*/@IgnoreAuth@RequestMapping(value = "/login")public R login(String username, String password, String captcha, HttpServletRequest request) {JiaoshiEntity u = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("jiaoshigonghao", username));if(u==null || !u.getJiaoshimima().equals(password)) {return R.error("账号或密码不正确");}String token = tokenService.generateToken(u.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 u = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("jiaoshigonghao", jiaoshi.getJiaoshigonghao()));if(u!=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 u = jiaoshiService.selectById(id);return R.ok().put("data", u);}/*** 密码重置*/@IgnoreAuth@RequestMapping(value = "/resetPass")public R resetPass(String username, HttpServletRequest request){JiaoshiEntity u = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("jiaoshigonghao", username));if(u==null) {return R.error("账号不存在");}u.setJiaoshimima("123456");jiaoshiService.updateById(u);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);jiaoshi = jiaoshiService.selectView(new EntityWrapper<JiaoshiEntity>().eq("id", 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);jiaoshi = jiaoshiService.selectView(new EntityWrapper<JiaoshiEntity>().eq("id", 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 u = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("jiaoshigonghao", jiaoshi.getJiaoshigonghao()));if(u!=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 u = jiaoshiService.selectOne(new EntityWrapper<JiaoshiEntity>().eq("jiaoshigonghao", jiaoshi.getJiaoshigonghao()));if(u!=null) {return R.error("用户已存在");}jiaoshi.setId(new Date().getTime());jiaoshiService.insert(jiaoshi);return R.ok();}/*** 修改*/@RequestMapping("/update")@Transactionalpublic 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();}}

四、效果图

五 、源码获取

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