学生信息管理系统jsp源码（基于ServletEasyUIMysql的学生信息系统）
学生信息管理系统jsp源码（基于ServletEasyUIMysql的学生信息系统）import java.util.List;import java.util.HashMap;package com.ischoolbar.programmer.servlet;import java.io.IOException;import java.util.Date;
知识点：jsp servlet，MySQL数据库的基本操作，前端easyui框架。
适合人群：Java初学者、在校学生，（已经学过Java基础语法，对html有简单的了解，熟悉js、jquery语法）。
用到的工具：eclipse、MySQL
看下系统的截图：
package com.ischoolbar.programmer.servlet;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletrequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import com.ischoolbar.programmer.dao.AttendanceDao;
import com.ischoolbar.programmer.dao.CourseDao;
import com.ischoolbar.programmer.dao.SelectedCourseDao;
import com.ischoolbar.programmer.model.Attendance;
import com.ischoolbar.programmer.model.Course;
import com.ischoolbar.programmer.model.Page;
import com.ischoolbar.programmer.model.SelectedCourse;
import com.ischoolbar.programmer.model.Student;
import com.ischoolbar.programmer.util.DateFormatUtil;
public class AttendanceServlet extends HttpServlet{
/**
*
*/
private static final long serialVersionUID = 1L;
public void doGet(HttpServletRequest request HttpServletResponse response) throws IOException{
doPost(request response);
}
public void doPost(HttpServletRequest request HttpServletResponse response) throws IOException{
String method = request.getParameter("method");
if("toAttendanceServletListView".equals(method)){
try {
request.getRequestDispatcher("view/attendanceList.jsp").forward(request response);
} catch (ServletException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else if("AddAttendance".equals(method)){
AddAttendance(request response);
}else if("AttendanceList".equals(method)){
attendanceList(request response);
}else if("DeleteAttendance".equals(method)){
deleteAttendance(request response);
}else if("getStudentSelectedCourseList".equals(method)){
getStudentSelectedCourseList(request response);
}
}
private void deleteAttendance(HttpServletRequest request
HttpServletResponse response) throws IOException {
// TODO Auto-generated method stub
int id = Integer.parseInt(request.getParameter("id"));
AttendanceDao attendanceDao = new AttendanceDao();
String msg = "success";
if(!attendanceDao.deleteAttendance(id)){
msg = "error";
}
attendanceDao.closeCon();
response.getWriter().write(msg);
}
private void attendanceList(HttpServletRequest request
HttpServletResponse response) {
// TODO Auto-generated method stub
int studentId = request.getParameter("studentid") == null ? 0 : Integer.parseInt(request.getParameter("studentid").toString());
int courseId = request.getParameter("courseid") == null ? 0 : Integer.parseInt(request.getParameter("courseid").toString());
String type = request.getParameter("type");
String date = request.getParameter("date");
Integer currentPage = request.getParameter("page") == null ? 1 : Integer.parseInt(request.getParameter("page"));
Integer pageSize = request.getParameter("rows") == null ? 999 : Integer.parseInt(request.getParameter("rows"));
Attendance attendance = new Attendance();
//获取当前登录用户类型
int userType = Integer.parseInt(request.getSession().getAttribute("userType").toString());
if(userType == 2){
//如果是学生，只能查看自己的信息
Student currentUser = (Student)request.getSession().getAttribute("user");
studentId = currentUser.getId();
}
attendance.setCourseId(courseId);
attendance.setStudentId(studentId);
attendance.setDate(date);
attendance.setType(type);
AttendanceDao attendanceDao = new AttendanceDao();
List<Attendance> attendanceList = attendanceDao.getSelectedCourseList(attendance new Page(currentPage pageSize));
int total = attendanceDao.getAttendanceListTotal(attendance);
attendanceDao.closeCon();
response.setCharacterEncoding("UTF-8");
Map<String Object> ret = new HashMap<String Object>();
ret.put("total" total);
ret.put("rows" attendanceList);
try {
String from = request.getParameter("from");
if("combox".equals(from)){
response.getWriter().write(JSONArray.fromObject(attendanceList).toString());
}else{
response.getWriter().write(JSONObject.fromObject(ret).toString());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void AddAttendance(HttpServletRequest request
HttpServletResponse response) {
// TODO Auto-generated method stub
int studentId = request.getParameter("studentid") == null ? 0 : Integer.parseInt(request.getParameter("studentid").toString());
int courseId = request.getParameter("courseid") == null ? 0 : Integer.parseInt(request.getParameter("courseid").toString());
String type = request.getParameter("type").toString();
AttendanceDao attendanceDao = new AttendanceDao();
Attendance attendance = new Attendance();
attendance.setCourseId(courseId);
attendance.setStudentId(studentId);
attendance.setType(type);
attendance.setDate(DateFormatUtil.getFormatDate(new Date() "yyyy-MM-dd"));
String msg = "success";
response.setCharacterEncoding("UTF-8");
if(attendanceDao.isAttendanced(studentId courseId type DateFormatUtil.getFormatDate(new Date() "yyyy-MM-dd"))){
msg = "已签到，请勿重复签到！";
}else if(!attendanceDao.addAttendance(attendance)){
msg = "系统内部出错。请联系管理员！";
}
try {
response.getWriter().write(msg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void getStudentSelectedCourseList(HttpServletRequest request
HttpServletResponse response) {
// TODO Auto-generated method stub
int studentId = request.getParameter("student_id") == null ? 0 : Integer.parseInt(request.getParameter("student_id").toString());
SelectedCourse selectedCourse = new SelectedCourse();
selectedCourse.setStudentId(studentId);
SelectedCourseDao selectedCourseDao = new SelectedCourseDao();
List<SelectedCourse> selectedCourseList = selectedCourseDao.getSelectedCourseList(selectedCourse new Page(1 999));
selectedCourseDao.closeCon();
String courseId = "";
for(SelectedCourse sc : selectedCourseList){
courseId = sc.getCourseId() " ";
}
courseId = courseId.substring(0 courseId.length()-1);
CourseDao courseDao = new CourseDao();
List<Course> courseList = courseDao.getCourse(courseId);
courseDao.closeCon();
response.setCharacterEncoding("UTF-8");
try {
response.getWriter().write(JSONArray.fromObject(courseList).toString());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
点击更多，获取系统文件。
