使用JSP/SERVLET实现在校学生管理系统
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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：
班级列表
成绩统计
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;
}
}
