支付网站开发费分录真正免费建站网站

网络的广泛应用给生活带来了十分的便利。所以把在线考试管理与现在网络相结合，利用java技术建设在线考试系统，实现在线考试的信息化管理。则对于进一步提高在线考试管理发展，丰富在线考试管理经验能起到不少的促进作用。

在线考试系统能够通过互联网得到广泛的、全面的宣传，让尽可能多的教师和学生了解和熟知在线考试系统的便捷高效，不仅为高校考试提供了服务，而且也推广了自己。对于在线考试而言，若拥有自己的系统，通过系统得到更好的管理，同时提升了形象。

本系统设计的现状和趋势，从需求、结构、数据库等方面的设计到系统的实现，分别为管理员、学生和教师的实现。论文的内容从系统的设计、描述、实现、分析、测试方面来表明开发的过程。本系统根据现实情况来选择一种可行的开发方案，借助java编程语言和MySQL数据库等实现系统的全部功能，接下来对系统进行测试，测试系统是否有漏洞和测试用户权限来完善系统，最终系统完成达到相关标准。

关键字：在线考试系统；java；MySQL数据库

基于SpringBoot的在线考试系统源码和论文305

演示视频：

Abstract

The wide application of the network has brought great convenience to life. Therefore, the online examination management is combined with the current network, and the online examination system is constructed by using java technology to realize the information management of the online examination. It can play a role in further improving the development of online examination management and enriching online examination management experience.

The online examination system can be widely and comprehensively publicized through the Internet, so that as many teachers and students as possible can understand and be familiar with the convenience and efficiency of the online examination system, which not only provides services for college examinations, but also promotes itself. For online exams, if you have your own system, you can get better management through the system and improve your image.

The current situation and trend of the system design, from the design of requirements, structure, database, etc. to the realization of the system, are the realization of administrators, students and teachers. The content of the paper shows the development process from the aspects of system design, description, implementation, analysis and testing. The system selects a feasible development plan according to the actual situation, realizes all the functions of the system with the help of java programming language and MySQL database, etc., and then tests the system to test whether there are loopholes in the system and test user permissions to improve the system, and finally the system Complete to meet relevant standards.

Keywords: Online text correcting system; Java; MySQL database

 

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.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.XueshengEntity;
import com.entity.view.XueshengView;import com.service.XueshengService;
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;/*** 学生* 后端接口* @author * @email * @date 2022-03-18 10:34:29*/
@RestController
@RequestMapping("/xuesheng")
public class XueshengController {@Autowiredprivate XueshengService xueshengService;@Autowiredprivate TokenService tokenService;/*** 登录*/@IgnoreAuth@RequestMapping(value = "/login")public R login(String username, String password, String captcha, HttpServletRequest request) {XueshengEntity user = xueshengService.selectOne(new EntityWrapper<XueshengEntity>().eq("xueshengzhanghao", 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,"xuesheng",  "学生" );return R.ok().put("token", token);}/*** 注册*/@IgnoreAuth@RequestMapping("/register")public R register(@RequestBody XueshengEntity xuesheng){//ValidatorUtils.validateEntity(xuesheng);XueshengEntity user = xueshengService.selectOne(new EntityWrapper<XueshengEntity>().eq("xueshengzhanghao", xuesheng.getXueshengzhanghao()));if(user!=null) {return R.error("注册用户已存在");}Long uId = new Date().getTime();xuesheng.setId(uId);xueshengService.insert(xuesheng);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");XueshengEntity user = xueshengService.selectById(id);return R.ok().put("data", user);}/*** 密码重置*/@IgnoreAuth@RequestMapping(value = "/resetPass")public R resetPass(String username, HttpServletRequest request){XueshengEntity user = xueshengService.selectOne(new EntityWrapper<XueshengEntity>().eq("xueshengzhanghao", username));if(user==null) {return R.error("账号不存在");}user.setMima("123456");xueshengService.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,XueshengEntity xuesheng,HttpServletRequest request){EntityWrapper<XueshengEntity> ew = new EntityWrapper<XueshengEntity>();PageUtils page = xueshengService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, xuesheng), params), params));return R.ok().put("data", page);}/*** 前端列表*/@IgnoreAuth@RequestMapping("/list")public R list(@RequestParam Map<String, Object> params,XueshengEntity xuesheng, HttpServletRequest request){EntityWrapper<XueshengEntity> ew = new EntityWrapper<XueshengEntity>();PageUtils page = xueshengService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, xuesheng), params), params));return R.ok().put("data", page);}/*** 列表*/@RequestMapping("/lists")public R list( XueshengEntity xuesheng){EntityWrapper<XueshengEntity> ew = new EntityWrapper<XueshengEntity>();ew.allEq(MPUtil.allEQMapPre( xuesheng, "xuesheng")); return R.ok().put("data", xueshengService.selectListView(ew));}/*** 查询*/@RequestMapping("/query")public R query(XueshengEntity xuesheng){EntityWrapper< XueshengEntity> ew = new EntityWrapper< XueshengEntity>();ew.allEq(MPUtil.allEQMapPre( xuesheng, "xuesheng")); XueshengView xueshengView =  xueshengService.selectView(ew);return R.ok("查询学生成功").put("data", xueshengView);}/*** 后端详情*/@RequestMapping("/info/{id}")public R info(@PathVariable("id") Long id){XueshengEntity xuesheng = xueshengService.selectById(id);return R.ok().put("data", xuesheng);}/*** 前端详情*/@IgnoreAuth@RequestMapping("/detail/{id}")public R detail(@PathVariable("id") Long id){XueshengEntity xuesheng = xueshengService.selectById(id);return R.ok().put("data", xuesheng);}/*** 后端保存*/@RequestMapping("/save")public R save(@RequestBody XueshengEntity xuesheng, HttpServletRequest request){xuesheng.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());//ValidatorUtils.validateEntity(xuesheng);XueshengEntity user = xueshengService.selectOne(new EntityWrapper<XueshengEntity>().eq("xueshengzhanghao", xuesheng.getXueshengzhanghao()));if(user!=null) {return R.error("用户已存在");}xuesheng.setId(new Date().getTime());xueshengService.insert(xuesheng);return R.ok();}/*** 前端保存*/@RequestMapping("/add")public R add(@RequestBody XueshengEntity xuesheng, HttpServletRequest request){xuesheng.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());//ValidatorUtils.validateEntity(xuesheng);XueshengEntity user = xueshengService.selectOne(new EntityWrapper<XueshengEntity>().eq("xueshengzhanghao", xuesheng.getXueshengzhanghao()));if(user!=null) {return R.error("用户已存在");}xuesheng.setId(new Date().getTime());xueshengService.insert(xuesheng);return R.ok();}/*** 修改*/@RequestMapping("/update")public R update(@RequestBody XueshengEntity xuesheng, HttpServletRequest request){//ValidatorUtils.validateEntity(xuesheng);xueshengService.updateById(xuesheng);//全部更新return R.ok();}/*** 删除*/@RequestMapping("/delete")public R delete(@RequestBody Long[] ids){xueshengService.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<XueshengEntity> wrapper = new EntityWrapper<XueshengEntity>();if(map.get("remindstart")!=null) {wrapper.ge(columnName, map.get("remindstart"));}if(map.get("remindend")!=null) {wrapper.le(columnName, map.get("remindend"));}int count = xueshengService.selectCount(wrapper);return R.ok().put("count", count);}}

package com.controller;import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.apache.commons.lang3.StringUtils;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ResourceUtils;
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.annotation.IgnoreAuth;
import com.baidu.aip.face.AipFace;
import com.baidu.aip.face.MatchRequest;
import com.baidu.aip.util.Base64Util;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.entity.ConfigEntity;
import com.service.CommonService;
import com.service.ConfigService;
import com.utils.BaiduUtil;
import com.utils.FileUtil;
import com.utils.R;
/*** 通用接口*/
@RestController
public class CommonController{@Autowiredprivate CommonService commonService;private static AipFace client = null;@Autowiredprivate ConfigService configService;    /*** 获取table表中的column列表(联动接口)* @param table* @param column* @return*/@IgnoreAuth@RequestMapping("/option/{tableName}/{columnName}")public R getOption(@PathVariable("tableName") String tableName, @PathVariable("columnName") String columnName,String level,String parent) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("column", columnName);if(StringUtils.isNotBlank(level)) {params.put("level", level);}if(StringUtils.isNotBlank(parent)) {params.put("parent", parent);}List<String> data = commonService.getOption(params);return R.ok().put("data", data);}/*** 根据table中的column获取单条记录* @param table* @param column* @return*/@IgnoreAuth@RequestMapping("/follow/{tableName}/{columnName}")public R getFollowByOption(@PathVariable("tableName") String tableName, @PathVariable("columnName") String columnName, @RequestParam String columnValue) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("column", columnName);params.put("columnValue", columnValue);Map<String, Object> result = commonService.getFollowByOption(params);return R.ok().put("data", result);}/*** 修改table表的sfsh状态* @param table* @param map* @return*/@RequestMapping("/sh/{tableName}")public R sh(@PathVariable("tableName") String tableName, @RequestBody Map<String, Object> map) {map.put("table", tableName);commonService.sh(map);return R.ok();}/*** 获取需要提醒的记录数* @param tableName* @param columnName* @param type 1:数字 2:日期* @param map* @return*/@IgnoreAuth@RequestMapping("/remind/{tableName}/{columnName}/{type}")public R remindCount(@PathVariable("tableName") String tableName, @PathVariable("columnName") String columnName, @PathVariable("type") String type,@RequestParam Map<String, Object> map) {map.put("table", tableName);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));}}int count = commonService.remindCount(map);return R.ok().put("count", count);}/*** 单列求和*/@IgnoreAuth@RequestMapping("/cal/{tableName}/{columnName}")public R cal(@PathVariable("tableName") String tableName, @PathVariable("columnName") String columnName) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("column", columnName);Map<String, Object> result = commonService.selectCal(params);return R.ok().put("data", result);}/*** 分组统计*/@IgnoreAuth@RequestMapping("/group/{tableName}/{columnName}")public R group(@PathVariable("tableName") String tableName, @PathVariable("columnName") String columnName) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("column", columnName);List<Map<String, Object>> result = commonService.selectGroup(params);SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");for(Map<String, Object> m : result) {for(String k : m.keySet()) {if(m.get(k) instanceof Date) {m.put(k, sdf.format((Date)m.get(k)));}}}return R.ok().put("data", result);}/*** （按值统计）*/@IgnoreAuth@RequestMapping("/value/{tableName}/{xColumnName}/{yColumnName}")public R value(@PathVariable("tableName") String tableName, @PathVariable("yColumnName") String yColumnName, @PathVariable("xColumnName") String xColumnName) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("xColumn", xColumnName);params.put("yColumn", yColumnName);List<Map<String, Object>> result = commonService.selectValue(params);SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");for(Map<String, Object> m : result) {for(String k : m.keySet()) {if(m.get(k) instanceof Date) {m.put(k, sdf.format((Date)m.get(k)));}}}return R.ok().put("data", result);}/*** （按值统计）时间统计类型*/@IgnoreAuth@RequestMapping("/value/{tableName}/{xColumnName}/{yColumnName}/{timeStatType}")public R valueDay(@PathVariable("tableName") String tableName, @PathVariable("yColumnName") String yColumnName, @PathVariable("xColumnName") String xColumnName, @PathVariable("timeStatType") String timeStatType) {Map<String, Object> params = new HashMap<String, Object>();params.put("table", tableName);params.put("xColumn", xColumnName);params.put("yColumn", yColumnName);params.put("timeStatType", timeStatType);List<Map<String, Object>> result = commonService.selectTimeStatValue(params);SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");for(Map<String, Object> m : result) {for(String k : m.keySet()) {if(m.get(k) instanceof Date) {m.put(k, sdf.format((Date)m.get(k)));}}}return R.ok().put("data", result);}/*** 人脸比对* * @param face1 人脸1* @param face2 人脸2* @return*/@RequestMapping("/matchFace")@IgnoreAuthpublic R matchFace(String face1, String face2,HttpServletRequest request) {if(client==null) {/*String AppID = configService.selectOne(new EntityWrapper<ConfigEntity>().eq("name", "AppID")).getValue();*/String APIKey = configService.selectOne(new EntityWrapper<ConfigEntity>().eq("name", "APIKey")).getValue();String SecretKey = configService.selectOne(new EntityWrapper<ConfigEntity>().eq("name", "SecretKey")).getValue();String token = BaiduUtil.getAuth(APIKey, SecretKey);if(token==null) {return R.error("请在配置管理中正确配置APIKey和SecretKey");}client = new AipFace(null, APIKey, SecretKey);client.setConnectionTimeoutInMillis(2000);client.setSocketTimeoutInMillis(60000);}JSONObject res = null;try {File path = new File(ResourceUtils.getURL("classpath:static").getPath());if(!path.exists()) {path = new File("");}File upload = new File(path.getAbsolutePath(),"/upload/");File file1 = new File(upload.getAbsolutePath()+"/"+face1);File file2 = new File(upload.getAbsolutePath()+"/"+face2);String img1 = Base64Util.encode(FileUtil.FileToByte(file1));String img2 = Base64Util.encode(FileUtil.FileToByte(file2));MatchRequest req1 = new MatchRequest(img1, "BASE64");MatchRequest req2 = new MatchRequest(img2, "BASE64");ArrayList<MatchRequest> requests = new ArrayList<MatchRequest>();requests.add(req1);requests.add(req2);res = client.match(requests);System.out.println(res.get("result"));} catch (FileNotFoundException e) {e.printStackTrace();return R.error("文件不存在");} catch (IOException e) {e.printStackTrace();} return R.ok().put("score", com.alibaba.fastjson.JSONObject.parse(res.getJSONObject("result").get("score").toString()));}
}