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使用JSP/SERVLET实现在校学生管理系统

作者：互联网

项目编号: BS-GX-012

本系统基于JSP/SERVLET技术开发实现，前端采用easyui进行页面设计，用户交互性好，采用三层架构，MVC设计模式，数据库采用MYSQL数据库，开发工具为IDEA或ECLIPSE。

系统分为管理员、老师端、学生端三个角色！

管理员：进入系统可以进行 学生管理，教师管理，基础信息管理（年级管理，班级管理，课程管理），系统管理，成绩统计分析管理等。管理员用户在user表中type类型为1 的用户。

学生用户：进入系统可以  查询考试成绩，查看班级通讯录，修改个人信息等。学生用户在user表中type类型为2 的用户。

教师用户：进入系统可以  管理学生成绩，查看教师通讯录，修改个人信息等。

教师用户在user表中type类型为2 的用户。

 一，管理员角色进入

登录功能：  admin   111111

管理员功能演示：

https://www.icode9.com/i/ll/?i=20201120224651715.png?,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doaXJsd2luZDUyNg==,size_16,color_FFFFFF,t_70

班级列表

成绩统计

https://www.icode9.com/i/ll/?i=20201120225146904.png?,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doaXJsd2luZDUyNg==,size_16,color_FFFFFF,t_70

老师信息管理

学生信息管理

课程管理

年级管理

班级管理

系统管理

二，老师登陆后台

登陆页面：  2012   /  111111

学生成绩管理

 老师通讯录查看

 个人信息管理

三，学生登陆系统

登陆页面：201301006   /  111111

成绩查询

 班级通讯录

个人信息管理

本系统功能完整，运行无误，结构清晰，适合做毕业设计使用。

package com.lizhou.service;

import java.sql.Connection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import com.lizhou.bean.Clazz;
import com.lizhou.bean.Grade;
import com.lizhou.bean.Page;
import com.lizhou.bean.Student;
import com.lizhou.dao.impl.BaseDaoImpl;
import com.lizhou.dao.impl.ClazzDaoImpl;
import com.lizhou.dao.inter.BaseDaoInter;
import com.lizhou.dao.inter.ClazzDaoInter;
import com.lizhou.tools.MysqlTool;
import com.lizhou.tools.StringTool;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;

/**
 * 年级服务层
 * @author ZNZ
 *
 */
public class ClazzService {
	
	ClazzDaoInter dao = new ClazzDaoImpl();
	
	/**
	 * 获取指定年级下的班级
	 * @param gid 年级ID
	 * @return JSON格式的班级
	 */
	public String getClazzList(String gradeid){
		int id = Integer.parseInt(gradeid);
		//获取数据
		List<Object> list = dao.getList(Clazz.class, "SELECT * FROM clazz WHERE gradeid=?", new Object[]{id});
		//json化
		JsonConfig config = new JsonConfig();
		config.setExcludes(new String[]{"grade", "studentList"});
        String result = JSONArray.fromObject(list, config).toString();
        
        return result;
	}
	
	/**
	 * 获取班级详细信息
	 * @param gradeid
	 * @param page
	 * @return
	 */
	public String getClazzDetailList(String gradeid, Page page) {
		//获取数据
		List<Clazz> list = dao.getClazzDetailList(gradeid, page);
		//获取总记录数
		long total = 0;
		if(!StringTool.isEmpty(gradeid)){
			int gid = Integer.parseInt(gradeid);
			total = dao.count("SELECT COUNT(*) FROM clazz WHERE gradeid=?", new Object[]{gid});
		} else {
			total = dao.count("SELECT COUNT(*) FROM clazz", new Object[]{});
		}
		//定义Map
		Map<String, Object> jsonMap = new HashMap<String, Object>();  
		//total键 存放总记录数，必须的
        jsonMap.put("total", total);
        //rows键 存放每页记录 list 
        jsonMap.put("rows", list); 
        //格式化Map,以json格式返回数据
        String result = JSONObject.fromObject(jsonMap).toString();
        
        return result;
	}

	/**
	 * 添加班级
	 * @param name
	 * @param gradeid
	 */
	public void addClazz(String name, String gradeid) {
		int gid = Integer.parseInt(gradeid);
		dao.insert("INSERT INTO clazz(name, gradeid) value(?,?)", new Object[]{name, gid});
	}
	
	/**
	 * 删除班级
	 * @param clazzid
	 * @throws Exception 
	 */
	public void deleteClazz(int clazzid) throws Exception {
		//获取连接
		Connection conn = MysqlTool.getConnection();
		try {
			//开启事务
			MysqlTool.startTransaction();
			//删除成绩表
			dao.deleteTransaction(conn, "DELETE FROM escore WHERE clazzid=?", new Object[]{clazzid});
			//删除考试记录
			dao.deleteTransaction(conn, "DELETE FROM exam WHERE clazzid=?", new Object[]{clazzid});
			//删除用户
			List<Object> list = dao.getList(Student.class, "SELECT number FROM student WHERE clazzid=?",  new Object[]{clazzid});
			if(list.size() > 0){
				Object[] param = new Object[list.size()];
				for(int i = 0;i < list.size();i++){
					Student stu = (Student) list.get(i);
					param[i] = stu.getNumber();
				}
				String sql = "DELETE FROM user WHERE account IN ("+StringTool.getMark(list.size())+")";
				dao.deleteTransaction(conn, sql, param);
				//删除学生
				dao.deleteTransaction(conn, "DELETE FROM student WHERE clazzid=?", new Object[]{clazzid});
			}
			//删除班级的课程和老师的关联
			dao.deleteTransaction(conn, "DELETE FROM clazz_course_teacher WHERE clazzid=?", new Object[]{clazzid});
			//最后删除班级
			dao.deleteTransaction(conn, "DELETE FROM clazz WHERE id=?",  new Object[]{clazzid});
			
			//提交事务
			MysqlTool.commit();
		} catch (Exception e) {
			//回滚事务
			MysqlTool.rollback();
			e.printStackTrace();
			throw e;
		} finally {
			MysqlTool.closeConnection();
		}
	}
	
}


package com.lizhou.service;

import java.sql.Connection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import com.lizhou.bean.Clazz;
import com.lizhou.bean.Course;
import com.lizhou.bean.Grade;
import com.lizhou.bean.Page;
import com.lizhou.bean.Student;
import com.lizhou.dao.impl.BaseDaoImpl;
import com.lizhou.dao.impl.ClazzDaoImpl;
import com.lizhou.dao.inter.BaseDaoInter;
import com.lizhou.dao.inter.ClazzDaoInter;
import com.lizhou.tools.MysqlTool;
import com.lizhou.tools.StringTool;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;

/**
 * 课程服务层
 * @author ZNZ
 *
 */
public class CourseService {
	
	BaseDaoInter dao = new BaseDaoImpl();
	
	/**
	 * 获取所有课程
	 * @return
	 */
	public String getCourseList(String gradeid){
		List<Object> list;
		if(StringTool.isEmpty(gradeid)){
			list = dao.getList(Course.class, "SELECT * FROM course");
		} else{
			list = dao.getList(Course.class, 
					"SELECT c.* FROM course c, grade_course gc WHERE c.id=gc.courseid AND gc.gradeid=?", 
					new Object[]{Integer.parseInt(gradeid)});
		}
		//json化
        String result = JSONArray.fromObject(list).toString();
        
        return result;
	}

	/**
	 * 添加课程
	 * @param course
	 */
	public void addCourse(Course course) {
		dao.insert("INSERT INTO course(name) value(?)", new Object[]{course.getName()});
	}

	/**
	 * 删除课程
	 * @param courseid
	 * @throws Exception 
	 */
	public void deleteClazz(int courseid) throws Exception {
		//获取连接
		Connection conn = MysqlTool.getConnection();
		try {
			//开启事务
			MysqlTool.startTransaction();
			//删除成绩表
			dao.deleteTransaction(conn, "DELETE FROM escore WHERE courseid=?", new Object[]{courseid});
			//删除班级的课程和老师的关联
			dao.deleteTransaction(conn, "DELETE FROM clazz_course_teacher WHERE courseid=?", new Object[]{courseid});
			//删除年级与课程关联
			dao.deleteTransaction(conn, "DELETE FROM grade_course WHERE courseid=?",  new Object[]{courseid});
			//最后删除课程
			dao.deleteTransaction(conn, "DELETE FROM course WHERE id=?",  new Object[]{courseid});
			
			//提交事务
			MysqlTool.commit();
		} catch (Exception e) {
			//回滚事务
			MysqlTool.rollback();
			e.printStackTrace();
			throw e;
		} finally {
			MysqlTool.closeConnection();
		}
	}
	
	
	
	
}


package com.lizhou.service;

import java.sql.Connection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import com.lizhou.bean.Course;
import com.lizhou.bean.CourseItem;
import com.lizhou.bean.Exam;
import com.lizhou.bean.Page;
import com.lizhou.bean.Student;
import com.lizhou.bean.Teacher;
import com.lizhou.bean.User;
import com.lizhou.dao.impl.BaseDaoImpl;
import com.lizhou.dao.impl.ExamDaoImpl;
import com.lizhou.dao.impl.StudentDaoImpl;
import com.lizhou.dao.impl.TeacherDaoImpl;
import com.lizhou.dao.inter.BaseDaoInter;
import com.lizhou.dao.inter.ExamDaoInter;
import com.lizhou.dao.inter.StudentDaoInter;
import com.lizhou.dao.inter.TeacherDaoInter;
import com.lizhou.tools.MysqlTool;
import com.lizhou.tools.StringTool;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

/**
 * 教师类服务层
 * @author ZNZ
 *
 */
public class ExamService {
	
	private ExamDaoInter dao;
	
	public ExamService(){
		dao = new ExamDaoImpl();
	}
	
	/**
	 * 获取考试信息
	 * @param exam 参数
	 * @param page 分页
	 * @return
	 */
	public String getExamList(Exam exam, Page page) {
		//sql语句
		StringBuffer sb = new StringBuffer("SELECT * FROM exam ");
		//参数
		List<Object> param = new LinkedList<>();
		//判断条件
		if(exam != null){ 
			if(exam.getGradeid() != 0){//条件：年级
				int gradeid = exam.getGradeid();
				param.add(gradeid);
				sb.append("AND gradeid=? ");
			}
			if(exam.getClazzid() != 0){
				int clazzid = exam.getClazzid();
				param.add(clazzid);
				sb.append("AND clazzid=? ");
			}
		}
		//添加排序
		sb.append("ORDER BY id DESC ");
		//分页
		if(page != null){
			param.add(page.getStart());
			param.add(page.getSize());
			sb.append("LIMIT ?,?");
		}
		String sql = sb.toString().replaceFirst("AND", "WHERE");
		//获取数据
		List<Exam> list = dao.getExamList(sql, param);
		//获取总记录数
		long total = getCount(exam);
		//定义Map
		Map<String, Object> jsonMap = new HashMap<String, Object>();  
		//total键 存放总记录数，必须的
        jsonMap.put("total", total);
        //rows键 存放每页记录 list 
        jsonMap.put("rows", list); 
        //格式化Map,以json格式返回数据
        String result = JSONObject.fromObject(jsonMap).toString();
        //返回
		return result;
	}
	
	/**
	 * 获取记录数
	 * @param exam
	 * @return
	 */
	private long getCount(Exam exam){
		//sql语句
		StringBuffer sb = new StringBuffer("SELECT COUNT(*) FROM exam ");
		//参数
		List<Object> param = new LinkedList<>();
		//判断条件
		if(exam != null){ 
			if(exam.getGrade() != null){//条件：年级
				int gradeid = exam.getGradeid();
				param.add(gradeid);
				sb.append("AND gradeid=? ");
			}
			if(exam.getClazz() != null){
				int clazzid = exam.getClazzid();
				param.add(clazzid);
				sb.append("AND clazzid=? ");
			}
		}
		String sql = sb.toString().replaceFirst("AND", "WHERE");
		
		long count = dao.count(sql, param).intValue();
		
		return count;
	}
	
	/**
	 * 添加考试
	 * @param exam
	 * @throws Exception
	 */
	public void addExam(Exam exam) throws Exception {
		Connection conn = MysqlTool.getConnection();
		try {
			//开启事务
			MysqlTool.startTransaction();
			
			//添加考试信息
			int examid = dao.insertReturnKeysTransaction(conn, 
					"INSERT INTO exam(name, time, remark, type, gradeid, clazzid, courseid) value(?,?,?,?,?,?,?)", 
					new Object[]{
						exam.getName(), 
						exam.getTime(),
						exam.getRemark(),
						exam.getType(),
						exam.getGradeid(),
						exam.getClazzid(),
						exam.getCourseid()
					});
			
			//添加学生成绩表
			String sql = "INSERT INTO escore(examid,clazzid,studentid,gradeid,courseid) value(?,?,?,?,?)";
			
			if(exam.getType() == Exam.EXAM_GRADE_TYPE){ //年级统考
				
				//查询该年级的课程
				List<Object> couObjList = dao.getList(Course.class, 
						"SELECT courseid id FROM grade_course WHERE gradeid=?", 
						new Object[]{exam.getGradeid()});
				
				//查询该年级下的学生
				List<Object> stuList = dao.getList(Student.class, 
						"SELECT id, clazzid FROM student WHERE gradeid=?",
						new Object[]{exam.getGradeid()});
				
				//转换类型
				List<Course> couList = new LinkedList<>();
				for(Object obj : couObjList){
					Course course = (Course) obj;
					couList.add(course);
				}
				//批量参数
				Object[][] param = new Object[stuList.size()*couList.size()][5];
				int index = 0;
				for(int i = 0;i < stuList.size();i++){
					Student student = (Student) stuList.get(i);
					for(int j = 0;j < couList.size();j++){
						param[index][0] = examid;
						param[index][1] = student.getClazzid();
						param[index][2] = student.getId();
						param[index][3] = exam.getGradeid();
						param[index][4] = couList.get(j).getId();
						
						index++;
					}
				}
				//批量添加学生考试表
				dao.insertBatchTransaction(conn, sql, param);
				
			} else{  //平时考试
				
				//查询该班级下的学生
				List<Object> stuList = dao.getList(Student.class, 
						"SELECT id FROM student WHERE clazzid=?",
						new Object[]{exam.getClazzid()});
				
				//批量参数
				Object[][] param = new Object[stuList.size()][5];
				for(int i = 0;i < stuList.size();i++){
					Student student = (Student) stuList.get(i);
					param[i][0] = examid;
					param[i][1] = exam.getClazzid();
					param[i][2] = student.getId();
					param[i][3] = exam.getGradeid();
					param[i][4] = exam.getCourseid();
				}
				//批量添加学生考试表
				dao.insertBatchTransaction(conn, sql, param);
			}
			
			//提交事务
			MysqlTool.commit();
		} catch (Exception e) {
			//回滚事务
			MysqlTool.rollback();
			e.printStackTrace();
			throw e;
		} finally {
			MysqlTool.closeConnection();
		}
	}
	
	/**
	 * 删除考试
	 * @param ids 
	 * @throws Exception 
	 */
	public void deleteExam(int id) throws Exception{
		//获取连接
		Connection conn = MysqlTool.getConnection();
		//开启事务
		MysqlTool.startTransaction();
		try {
			//删除成绩表
			dao.deleteTransaction(conn, "DELETE FROM escore WHERE examid=?", new Object[]{id});
			//删除考试
			dao.deleteTransaction(conn, "DELETE FROM exam WHERE id =?", new Object[]{id});
			
			//提交事务
			MysqlTool.commit();
		} catch (Exception e) {
			//回滚事务
			MysqlTool.rollback();
			e.printStackTrace();
			throw e;
		} finally {
			MysqlTool.closeConnection();
		}
	}

	/**
	 * 获取某老师的考试
	 * @param id
	 * @return
	 */
	public String teacherExamList(String number) {
		//获取教师信息
		Teacher teacher = new TeacherService().getTeacher(number);
		
		List<CourseItem> itemList = teacher.getCourseList();
		if(itemList.size() == 0){
			return "";
		}
		StringBuffer g = new StringBuffer();
		StringBuffer c = new StringBuffer();
		for(CourseItem item : itemList){
			g.append(","+item.getGradeid());
			c.append(","+item.getCourseid());
		}
		
		StringBuffer sb = new StringBuffer("SELECT * FROM exam WHERE (gradeid IN (");
		sb.append(g.toString().replaceFirst(",", ""));
		sb.append(") AND type=1) OR (courseid IN (");
		sb.append(c.toString().replaceFirst(",", ""));
		sb.append(") AND type=2)");
		//sql语句
		String sql = sb.toString();
		//获取数据
		List<Exam> list = dao.getExamList(sql, null);
		
        //格式化Map,以json格式返回数据
        String result = JSONArray.fromObject(list).toString();
        //返回
		return result;
	}
	
	/**
	 * 获取某个学生考试列表
	 * @param number
	 * @return
	 */
	public String studentExamList(String number) {
		
		//获取学生详细信息
		Student student = new StudentDaoImpl().getStudentList("SELECT * FROM student WHERE number="+number, null).get(0);
		
		String sql = "SELECT * FROM exam WHERE (gradeid=? AND type=1) OR (clazzid=? AND type=2)";
		
		List<Object> param = new LinkedList<>();
		param.add(student.getGradeid());
		param.add(student.getClazzid());
		
		//获取数据
		List<Exam> list = dao.getExamList(sql, param);
		
		//格式化Map,以json格式返回数据
        String result = JSONArray.fromObject(list).toString();
		
		return result;
	}
	
}

标签：lizhou,在校学生,dao,param,JSP,com,new,import,SERVLET
来源： https://blog.csdn.net/znzbs/article/details/122208153