基于javaweb+JSP+Servlet学生成绩管理系统(管理员、教师、学生)

基于javaweb+JSP+Servlet学生成绩管理系统(管理员、教师、学生)

开发工具：eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

				+ score.getStuName()
				+ "%' and score.stu_class like '%"
				+ score.getStuClass()
				+ "%' and score.stu_num like '%"
				+ score.getStuNum()
				+ "'";
		ResultSet rs = dbCon.find(sql);
		try {
			while (rs.next()) {
				int scoreID = rs.getInt("score_id");
				String stuNum = rs.getString("stu_num");
				String stuName = rs.getString("stu_name");
				String stuClass = rs.getString("stu_class");
				String courseName = rs.getString("course_name");
				double scoreGrade = rs.getDouble("score_grade");
				String major = rs.getString("major");
				score = new Score(scoreID, stuNum, stuName, stuClass,
						courseName, scoreGrade, major);
				list.add(score);
			}
			rs = dbCon.find(sqlCount);
			while (rs.next()) {

				xmlHttpRequest.send();
				xmlHttpRequest.onreadystatechange=function(){
					if(xmlHttpRequest.readyState==4 && xmlHttpRequest.status==200){
						var text = xmlHttpRequest.responseText;
						//alert(text);
						document.getElementById("stuNumcheck").innerHTML = text;
					}
				};
			}
		}
	}
	
	function namecheck(){
		var stuName=document.getElementById("stuName").value;
		var rename=/^[u4e00-u9fa5]+$/gi;          //中文判断
		if(stuName==""){
			document.getElementById("stuNamecheck").innerHTML = "用户名不能为空";
		}
		else if (!rename.test(stuName))
		{
			document.getElementById("stuNamecheck").innerHTML = "请输入中文名，如：王文军";
		}else{

					// 4、使用ServletFileUpload解析器解析上传数据，解析结果返回的是一个List集合，
					// 每一个FileItem对应一个Form表单的输入项

				
					List list = upLoad.parseRequest(request);
					// List list=upLoad.parseRequest(request);
					// 如果fileitem中封装的是普通输入项的数据
					for (FileItem item : list) {
						if (item.isFormField()) {
							String name = item.getFieldName();
							
						} else {
							// 吐过fileitem中封装的是上传文件
							// 得到上传的文件名称

import model.Course;
import model.PageBean;
import dao.CourseDao;
import db.DBCon;

public class CourseDaoImpl implements CourseDao {

	private DBCon dbCon = new DBCon();
	private Course course;
	private PageBean pageBean;

	public int addCos(Course course, String courseDate) {
		System.out.println(courseDate);
		// Date courseDate=(Date) course.getCourseDate();
		// DateFormat
		// data=DateFormat.getDateTimeInstance(DateFormat.MEDIUM,DateFormat.MEDIUM);
		String sql = "insert into course(course_name,course_credit,course_hours,course_teacher,coursedate) values('"
				+ course.getCourseName()
				+ "',"
				+ course.getCourseCredit()
				+ ","
				+ course.getCourseHours()
				+ ",'"
				+ course.getCourseTeacher() + "',DATE('" + courseDate + "'))";

			while (rs.next()) {
				int scoreid = rs.getInt("score_id");
				String stuNum = rs.getString("stu_num");
				String stuName = rs.getString("stu_name");
				String stuClass = rs.getString("stu_class");
				String courseName = rs.getString("course_name");
				double scoreGrade = rs.getDouble("score_grade");
				String major = rs.getString("major");
				Score score = new Score(scoreid, stuNum, stuName, stuClass,
						courseName, scoreGrade, major);
				list.add(score);
			}
		} catch (SQLException e) {

			e.printStackTrace();
		}
		return list;
	}

			margin-left: 15px;
			margin-right: 15px;
			background: #ccc;
		}
		.btn1{
			background: #afc5d6;
		}
		font{
			font-size: .7rem;
			float: left;
		}
	

<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

Severity: Notice
Message:  Trying to get property of non-object
Filename: views/demo.php
Line Number: 40