Java+Servlet+JSP+Mysql+Tomcat实现Web学生选课管理系统

一、系统介绍

1.软件环境

Java：jdk1.8
Mysql：8.0.13
Tomcat：8.5.23

2.系统功能

学生
1.查看个人信息
2.选课
3.查看已选课程
教师
1.查看个人信息
2.评分
3.查看任课课程
管理员
1.管理员功能
(1).查看个人信息
(2).添加新的管理员
2.学生功能
(1).添加学生
(2).获取所有学生
3.课程功能
(1).添加课程
(2).查询课程
4.教师功能
(1).添加教师
(2)获取所有教师

3.数据库

/*
 Navicat Premium Data Transfer

 Source Server         : MySQL
 Source Server Type    : MySQL
 Source Server Version : 80013
 Source Host           : localhost:3306
 Source Schema         : jsp_servlet_selectcourse

 Target Server Type    : MySQL
 Target Server Version : 80013
 File Encoding         : 65001

 Date: 23/06/2021 20:46:30
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for t_admin
-- ----------------------------
DROP TABLE IF EXISTS `t_admin`;
CREATE TABLE `t_admin`  (
  `userid` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `username` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `password` varchar(16) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `age` int(3) NULL DEFAULT NULL,
  `score` decimal(5, 1) NULL DEFAULT NULL,
  `introduction` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `enterdate` date NULL DEFAULT NULL,
  PRIMARY KEY (`userid`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_admin
-- ----------------------------
INSERT INTO `t_admin` VALUES ('admin', '管理员', 'admin', 21, 100.0, '  ', '2018-06-12');
INSERT INTO `t_admin` VALUES ('admin1', '水坚石青', 'admin1', 25, 99.0, '', '2021-06-22');

-- ----------------------------
-- Table structure for t_class
-- ----------------------------
DROP TABLE IF EXISTS `t_class`;
CREATE TABLE `t_class`  (
  `classno` int(4) NOT NULL AUTO_INCREMENT,
  `cname` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `cteacher` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `classroom` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`classno`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1531 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_class
-- ----------------------------
INSERT INTO `t_class` VALUES (1520, '软工', '赵丽', '综阶1');
INSERT INTO `t_class` VALUES (1521, '软工', '齐兴斌', '综阶2');
INSERT INTO `t_class` VALUES (1522, '软工', '张志斌', '综阶3');
INSERT INTO `t_class` VALUES (1523, '软工', '郭小英', '综阶5');
INSERT INTO `t_class` VALUES (1524, '软工', '郭新峰', '综阶6');
INSERT INTO `t_class` VALUES (1525, '软工', '王若慧', '综阶7');
INSERT INTO `t_class` VALUES (1526, '软工', '贾春华', '综阶8');
INSERT INTO `t_class` VALUES (1527, '软工', '朱云雷', '综阶9');
INSERT INTO `t_class` VALUES (1528, '软工', '李雪梅', '综阶10');
INSERT INTO `t_class` VALUES (1529, '软工', '张举 ', '综阶11');
INSERT INTO `t_class` VALUES (1530, '软工', '米晓萍', '综阶12');
INSERT INTO `t_class` VALUES (1531, '软工', '张建英', '综阶13');

-- ----------------------------
-- Table structure for t_course
-- ----------------------------
DROP TABLE IF EXISTS `t_course`;
CREATE TABLE `t_course`  (
  `cno` int(4) NOT NULL AUTO_INCREMENT,
  `name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `credit` int(1) NULL DEFAULT NULL,
  `periodstart` date NULL DEFAULT NULL,
  `periodend` date NULL DEFAULT NULL,
  PRIMARY KEY (`cno`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1009 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_course
-- ----------------------------
INSERT INTO `t_course` VALUES (1001, '数据库', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1002, '数据结构', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1003, 'j2ee', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1004, '计算机网络', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1005, '计算机组成原理', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1007, '编译原理', 4, '2018-02-01', '2018-08-08');
INSERT INTO `t_course` VALUES (1008, 'C语言', 4, '2018-02-01', '2018-02-01');
INSERT INTO `t_course` VALUES (1009, 'c++', 4, '2018-01-02', '2018-05-28');
INSERT INTO `t_course` VALUES (1010, '1', 1, '2021-06-22', '2021-06-22');

-- ----------------------------
-- Table structure for t_sc
-- ----------------------------
DROP TABLE IF EXISTS `t_sc`;
CREATE TABLE `t_sc`  (
  `sno` int(10) NOT NULL,
  `cno` int(4) NOT NULL,
  `tno` int(4) NOT NULL,
  `score` decimal(5, 2) NULL DEFAULT NULL,
  PRIMARY KEY (`sno`, `cno`, `tno`) USING BTREE,
  INDEX `t_sc_ibfk_2`(`cno`) USING BTREE,
  INDEX `t_sc_ibfk_3`(`tno`) USING BTREE,
  CONSTRAINT `t_sc_ibfk_1` FOREIGN KEY (`sno`) REFERENCES `t_student` (`sno`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `t_sc_ibfk_2` FOREIGN KEY (`cno`) REFERENCES `t_course` (`cno`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `t_sc_ibfk_3` FOREIGN KEY (`tno`) REFERENCES `t_teacher` (`tno`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_sc
-- ----------------------------
INSERT INTO `t_sc` VALUES (2015001, 1002, 1001, 100.00);
INSERT INTO `t_sc` VALUES (2015001, 1004, 1001, 99.00);
INSERT INTO `t_sc` VALUES (2015001, 1004, 1006, NULL);
INSERT INTO `t_sc` VALUES (2015001, 1005, 1002, NULL);
INSERT INTO `t_sc` VALUES (2015001, 1007, 1004, NULL);
INSERT INTO `t_sc` VALUES (2015001, 1008, 1002, NULL);
INSERT INTO `t_sc` VALUES (2015001, 1008, 1004, NULL);
INSERT INTO `t_sc` VALUES (2015001, 1008, 1005, NULL);

-- ----------------------------
-- Table structure for t_student
-- ----------------------------
DROP TABLE IF EXISTS `t_student`;
CREATE TABLE `t_student`  (
  `sno` int(9) NOT NULL AUTO_INCREMENT,
  `password` varchar(16) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `sname` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `phone` bigint(11) NULL DEFAULT NULL,
  `sex` varchar(2) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `birthday` date NULL DEFAULT NULL,
  `classno` int(4) NULL DEFAULT NULL,
  `remark` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`sno`) USING BTREE,
  INDEX `t_student_ibfk_1`(`classno`) USING BTREE,
  CONSTRAINT `t_student_ibfk_1` FOREIGN KEY (`classno`) REFERENCES `t_class` (`classno`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE = InnoDB AUTO_INCREMENT = 2015570 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_student
-- ----------------------------
INSERT INTO `t_student` VALUES (2015001, '123456', '李四', 15788888888, '女', '2021-06-22', 1525, '优秀');
INSERT INTO `t_student` VALUES (2015002, '123456', '王茹', 15788888888, '女', '2018-05-28', 1520, '良好');
INSERT INTO `t_student` VALUES (2015003, '123456', '张三', 15788888888, '女', '2018-05-28', 1520, '良好');
INSERT INTO `t_student` VALUES (2015004, '123456', '王五', 15788888888, '女', '2018-05-28', 1520, '优秀');
INSERT INTO `t_student` VALUES (2015005, '123456', '李浩', 15788888888, '女', '2018-05-28', 1520, '合格');
INSERT INTO `t_student` VALUES (2015006, '123456', '黄县', 15788888888, '女', '2018-05-28', 1520, '良好');
INSERT INTO `t_student` VALUES (2015007, '123456', '钱一', 15788888888, '女', '2018-05-28', 1520, '优秀');
INSERT INTO `t_student` VALUES (2015009, '123456', '赵括', 15788888888, '女', '2018-05-28', 1520, '优秀');
INSERT INTO `t_student` VALUES (2015010, '123456', '赵括', 15788888888, '女', '2018-05-28', 1520, '优秀');

-- ----------------------------
-- Table structure for t_tc
-- ----------------------------
DROP TABLE IF EXISTS `t_tc`;
CREATE TABLE `t_tc`  (
  `cno` int(4) NOT NULL,
  `tno` int(4) NOT NULL,
  PRIMARY KEY (`cno`, `tno`) USING BTREE,
  INDEX `t_tc_ibfk_2`(`tno`) USING BTREE,
  CONSTRAINT `t_tc_ibfk_1` FOREIGN KEY (`cno`) REFERENCES `t_course` (`cno`) ON DELETE RESTRICT ON UPDATE RESTRICT,
  CONSTRAINT `t_tc_ibfk_2` FOREIGN KEY (`tno`) REFERENCES `t_teacher` (`tno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_tc
-- ----------------------------
INSERT INTO `t_tc` VALUES (1001, 1001);
INSERT INTO `t_tc` VALUES (1002, 1001);
INSERT INTO `t_tc` VALUES (1004, 1001);
INSERT INTO `t_tc` VALUES (1009, 1001);
INSERT INTO `t_tc` VALUES (1005, 1002);
INSERT INTO `t_tc` VALUES (1008, 1002);
INSERT INTO `t_tc` VALUES (1002, 1003);
INSERT INTO `t_tc` VALUES (1004, 1003);
INSERT INTO `t_tc` VALUES (1007, 1004);
INSERT INTO `t_tc` VALUES (1008, 1004);
INSERT INTO `t_tc` VALUES (1008, 1005);
INSERT INTO `t_tc` VALUES (1004, 1006);

-- ----------------------------
-- Table structure for t_teacher
-- ----------------------------
DROP TABLE IF EXISTS `t_teacher`;
CREATE TABLE `t_teacher`  (
  `tno` int(4) NOT NULL AUTO_INCREMENT,
  `tname` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `password` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `phone` bigint(11) NULL DEFAULT NULL,
  `hiredate` date NULL DEFAULT NULL,
  `remark` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  PRIMARY KEY (`tno`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1006 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of t_teacher
-- ----------------------------
INSERT INTO `t_teacher` VALUES (1001, '张志斌', '123456', 15788888888, '2017-07-20', '张老师是一个超级幽默的老师，教学认真，态度友好，有自己独有的教学方法，深得学生喜爱');
INSERT INTO `t_teacher` VALUES (1002, '白茹意', '123456', 15766666666, '2018-03-06', '白老师工作认真负责，不推卸责任');
INSERT INTO `t_teacher` VALUES (1003, '郭新峰', '123456', 15733333333, '2018-05-14', '郭老师很认真负责');
INSERT INTO `t_teacher` VALUES (1004, '赵丽', '123456', 15722222222, '2018-04-03', NULL);
INSERT INTO `t_teacher` VALUES (1005, '齐兴斌', '123456', 15711111111, '2004-05-28', NULL);
INSERT INTO `t_teacher` VALUES (1006, '尹少平', '123456', 15777777777, '2014-06-11', NULL);

SET FOREIGN_KEY_CHECKS = 1;

二、系统展示

1.登录页面

2.学生-主页面

3.学生-查看个人信息

4.学生-选择课程

5.学生-查看已选课程

6.教师-主页面

7.教师-查看个人信息

8.教师-评分

9.教师-查看任课信息

10.管理员-主页面

11.管理员-管理员功能-查看个人信息

12.管理员-管理员功能-添加新的管理员

13.管理员-学生功能-添加学生

14.管理员-学生功能-获取所有学生

15.管理员-课程功能-添加课程

16.管理员-课程功能-查询课程

17.管理员-教师功能-添加教师

18.管理员-教师功能-获取所有教师

三、部分代码

AdminDaoImpl.java

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.util.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.bluehonour.sscs.dao.AdminDao;
import com.bluehonour.sscs.entity.Admin;
import com.bluehonour.sscs.util.DBUtils;

public class AdminDaoImpl implements AdminDao{
     

	@Override
	public Admin find(String userId, String password) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Admin admin = null;
		try {
     
			//建立连接
			connection = DBUtils.getConnection();
			
			//向数据库发送sql命令并得到结果
			String sql = "select * from t_admin where userid = ? and password = ?";
			preparedStatement = connection.prepareStatement(sql);
			preparedStatement.setString(1, userId);
			preparedStatement.setString(2, password);
			rs = preparedStatement.executeQuery();
			
			//处理返回结果
			if(rs.next()) {
     
				//取出结果集当前行各个字段的值
				String userName = rs.getString("username");
				int age = rs.getInt("age");
				double score = rs.getDouble("score");
				Date enterDate = rs.getDate("enterdate");
				String introduction = rs.getString("introduction");
				
				//封装成对象
				admin = new Admin(userId, userName, password, age, score, enterDate, introduction);
			}
			
		} catch (SQLException e) {
     
			e.printStackTrace();
			
		} finally {
     
			//关闭数据库资源
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return admin;
	}

	@Override
	public int save(Admin admin) {
     
		String sql = "insert into t_admin values(?,?,?,?,?,?,?)";
		Object[] params = {
     admin.getUserId(),admin.getUserName(),admin.getPassword(),admin.getAge(),
				admin.getScore(),admin.getIntroduction(),admin.getEnterDate()};
		return DBUtils.executeUpdate(sql, params);
	}

}

CourseDaoImpl.java

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.bluehonour.sscs.dao.CourseDao;
import com.bluehonour.sscs.entity.Course;
import com.bluehonour.sscs.util.DBUtils;

public class CourseDaoImpl implements CourseDao{
     

	@Override
	public int save(Course course) {
     
		String sql = "insert into t_course (name,credit,periodstart,periodend)  values(?,?,?,?) ";
		Object[] params = {
     course.getName(), course.getCredit(), course.getPeriodstart(), course.getPeriodend()};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Course> findAll() {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Course> list = new ArrayList<Course>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_course order by cno";
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				Date periodstart = rs.getDate("periodstart");
				Date periodend = rs.getDate("periodend");
				// 封装成对象
				Course course = new Course(cno,name, credit, periodstart, periodend);
				list.add(course);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

}

StudentCourseTeacherDaoImpl.java

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.bluehonour.sscs.dao.StudentCourseTeacherDao;
import com.bluehonour.sscs.entity.Course;
import com.bluehonour.sscs.entity.StudentCourse;
import com.bluehonour.sscs.entity.Teacher;
import com.bluehonour.sscs.util.DBUtils;

public class StudentCourseTeacherDaoImpl implements StudentCourseTeacherDao {
     

	@Override
	public int save(int sno, int cno, int tno) {
     
		String sql = "insert into t_sc(sno,cno,tno) values(?,?,?)";
		Object[] params = {
     sno,cno,tno};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Course> findSelectedCourse(int sno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Course> list = new ArrayList<Course>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_course c"
					+ " join t_sc sc"
					+ " on (c.cno = sc.cno)"
					+ " join t_teacher t"
					+ " on (sc.tno = t.tno)"
					+ " where sno = " + sno;
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行课程各个字段的值
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				Date periodstart = rs.getDate("periodstart");
				Date periodend = rs.getDate("periodend");
				// 封装成课程对象
				Course course = new Course(cno,name, credit, periodstart, periodend);
				//取出结果集中教师各个字段的值
				int tno = rs.getInt("tno");
				String tname = rs.getString("tname");
				String password = rs.getString("password");
				long phone = rs.getLong("phone");
				Date hiredate = rs.getDate("hiredate");
				String remark = rs.getString("remark");
				//封装成教师对象
				Teacher teacher = new Teacher(tno,tname, password, phone, hiredate, remark);
				
				//将教师加入课程
				course.setTeacher(teacher);
				list.add(course);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

	@Override
	public List<Course> findSelectableCourse(int sno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Course> list = new ArrayList<Course>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "SELECT c.*, t.* FROM	t_tc a "
					+ "LEFT JOIN t_course c "
					+ "ON a.cno = c.cno "
					+ "LEFT JOIN t_teacher t "
					+ "ON a.tno = t.tno "
					+ "WHERE (a.cno, a.tno) NOT IN "
					+ "( SELECT	cno,tno "
					+ "FROM	t_sc "
					+ "WHERE sno = "
					+ sno
					+") ";
					
			
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行课程各个字段的值
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				Date periodstart = rs.getDate("periodstart");
				Date periodend = rs.getDate("periodend");
				// 封装成课程对象
				Course course = new Course(cno,name, credit, periodstart, periodend);
				//取出结果集中教师各个字段的值
				int tno = rs.getInt("tno");
				String tname = rs.getString("tname");
				String password = rs.getString("password");
				long phone = rs.getLong("phone");
				Date hiredate = rs.getDate("hiredate");
				String remark = rs.getString("remark");
				//封装成教师对象
				Teacher teacher = new Teacher(tno,tname, password, phone, hiredate, remark);
				
				//将教师加入课程
				course.setTeacher(teacher);
				list.add(course);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

	@Override
	public int removeStudentDistributedCourse(int sno, int cno, int tno) {
     
		String sql = "delete from t_sc where sno = ? and cno = ? and tno = ?";
		Object[] params = {
     sno,cno,tno};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<StudentCourse> getSelectedStudentAndCourse(int tno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<StudentCourse> list = new ArrayList<StudentCourse>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "SELECT" + 
					"	s.sno," + 
					"	s.sname," + 
					"	s.classno," + 
					"	clazz.cname," + 
					"	c.cno," + 
					"	c. NAME," + 
					"	c.credit," + 
					"	sc.score" + 
					" FROM" + 
					"	t_student s" + 
					" LEFT JOIN t_class clazz ON clazz.classno = s.classno" + 
					" LEFT JOIN t_sc sc ON sc.sno = s.sno" + 
					" LEFT JOIN t_course c ON c.cno = sc.cno" + 
					" WHERE" + 
					"	sc.tno = " + tno +
					" ORDER BY" + 
					"	c.cno," + 
					"	s.sno";
					
			
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				int sno = rs.getInt("sno");
				int classno = rs.getInt("classno");
				String sname = rs.getString("sname");
				String cname = rs.getString("cname");
				double score = rs.getDouble("score");
				//封装成教师对象
				StudentCourse sc = new StudentCourse(sno, sname, classno, cname, cno, name, credit, score);
				list.add(sc);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

	@Override
	public int courseRemark(int sno, int cno, int tno, double score) {
     
		String sql = "update t_sc set score = ? where sno = ? and cno = ? and tno = ?";
		Object[] params = {
     score,sno,cno,tno};
		return DBUtils.executeUpdate(sql, params);
	}

}

StudentDaoImpl.java

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.bluehonour.sscs.dao.StudentDao;
import com.bluehonour.sscs.entity.ClassInfo;
import com.bluehonour.sscs.entity.CriteriaStudent;
import com.bluehonour.sscs.entity.Student;
import com.bluehonour.sscs.util.DBUtils;

public class StudentDaoImpl implements StudentDao {
     

	@Override
	public int save(Student stu) {
     
		String sql = "insert into t_student(password,sname,phone,sex,birthday,classno,remark) values(?,?,?,?,?,?,?)";
		Object[] params = {
      stu.getPassword(), stu.getSname(), stu.getPhone(), stu.getSex(), stu.getBirthday(),
				stu.getClassno(), stu.getRemark() };
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Student> findAll() {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Student student = null;
		List<Student> stuList = new ArrayList<Student>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_student";
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				int sno = rs.getInt("sno");
				String password = rs.getString("password");
				String sname = rs.getString("sname");
				long phone = rs.getLong("phone");
				String sex = rs.getString("sex");
				Date birthday = rs.getDate("birthday");
				int classno = rs.getInt("classno");
				String remark = rs.getString("remark");
				// 封装成对象
				student = new Student(sno,password, sname, phone, sex, birthday, classno, remark);
				stuList.add(student);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return stuList;
	}

	@Override
	public int del(int sno) {
     
		String sql = "delete  from t_student where sno = ?";
		Object[] params = {
     sno };
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public Student findById(int sno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Student student = null;
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_student where sno = " + sno;
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			if (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				String password = rs.getString("password");
				String sname = rs.getString("sname");
				long phone = rs.getLong("phone");
				String sex = rs.getString("sex");
				Date birthday = rs.getDate("birthday");
				int classno = rs.getInt("classno");
				String remark = rs.getString("remark");
				// 封装成对象
				student = new Student(sno,password, sname, phone, sex, birthday, classno, remark);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return student;
	}

	@Override
	public int update(Student stu) {
     
		String sql = "update t_student set sname=?,password=?,phone=?,birthday=?,sex=?,classno=?,remark=? where sno=?";
		Object[] params = {
      stu.getSname(),stu.getPassword(),stu.getPhone(),stu.getBirthday(),stu.getSex(),stu.getClassno(),
				 stu.getRemark(),stu.getSno() };
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public Student find(String sno, String password) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Student student = null;
		try {
     
			//建立连接
			connection = DBUtils.getConnection();
			
			//向数据库发送sql命令并得到结果
			String sql = "select * from t_student where sno = ? and password = ?";
			preparedStatement = connection.prepareStatement(sql);
			preparedStatement.setString(1, sno);
			preparedStatement.setString(2, password);
			rs = preparedStatement.executeQuery();
			
			//处理返回结果
			if(rs.next()) {
     
				//取出结果集当前行各个字段的值
				String sname = rs.getString("sname");
				long phone = rs.getLong("phone");
				String sex = rs.getString("sex");
				Date birthday = rs.getDate("birthday");
				int classno = rs.getInt("classno");
				String remark = rs.getString("remark");
				
				//封装成对象
				student = new Student(Integer.parseInt(sno), password, sname, phone, sex, birthday, classno, remark);
			}
			
		} catch (SQLException e) {
     
			e.printStackTrace();
			
		} finally {
     
			//关闭数据库资源
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return student;
	}

	@Override
	public List<ClassInfo> getClassInfo() {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		ClassInfo clazz = null;
		List<ClassInfo> list = new ArrayList<ClassInfo>();
		try {
     
			//建立连接
			connection = DBUtils.getConnection();
			
			//向数据库发送sql命令并得到结果
			String sql = "select * from t_class";
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			
			//处理返回结果
			while(rs.next()) {
     
				//取出结果集当前行各个字段的值
				int classno = rs.getInt("classno");
				String cname = rs.getString("cname");
				String cteacher = rs.getString("cteacher");
				String classroom = rs.getString("classroom");
				//封装成对象
				clazz = new ClassInfo(classno, cname, cteacher, classroom);
				list.add(clazz);
			}
			
		} catch (SQLException e) {
     
			e.printStackTrace();
			
		} finally {
     
			//关闭数据库资源
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

	@Override
	public List<Student> getForListWithCriteriaStudent(CriteriaStudent student) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Student> stuList = new ArrayList<Student>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			
			
			
			// 向数据库发送sql命令并得到结果
			StringBuffer sql = new StringBuffer();
			sql.append("select * from t_student");
			if(!student.getSno().equals("")) {
     
				sql.append(" and sno like '%"+ student.getSno()  +"%'");
			}
			if(!student.getSname().equals("")) {
     
				sql.append(" and sname like '%"+ student.getSname() +"%'");
			}
			if(!student.getSex().equals("")) {
     
				sql.append(" and sex ='"+ student.getSex() +"'");
			}
			if(!student.getClassno().equals("")) {
     
				sql.append(" and classno like '%"+ student.getClassno() +"%'");
			}
			if(!student.getRemark().equals("")) {
     
				sql.append(" and remark='"+ student.getRemark() +"'");
			}
			String SQL = sql.toString();
			SQL = SQL.replaceFirst("and", "where");
			System.out.println(SQL);
			preparedStatement = connection.prepareStatement(SQL);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				int sno = rs.getInt("sno");
				String password = rs.getString("password");
				String sname = rs.getString("sname");
				long phone = rs.getLong("phone");
				String sex = rs.getString("sex");
				Date birthday = rs.getDate("birthday");
				int classno = rs.getInt("classno");
				String remark = rs.getString("remark");
				// 封装成对象
				Student stu = new Student(sno,password, sname, phone, sex, birthday, classno, remark);
				stuList.add(stu);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return stuList;
	}

}

TeacherCourseDaoImpl.javab

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.bluehonour.sscs.dao.TeacherCourseDao;
import com.bluehonour.sscs.entity.Course;
import com.bluehonour.sscs.entity.Teacher;
import com.bluehonour.sscs.util.DBUtils;

public class TeacherCourseDaoImpl implements TeacherCourseDao {
     

	@Override
	public int save(int cno, int tno) {
     
		String sql = "insert into t_tc values(?,?)";
		Object[] params = {
     cno,tno};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public int delete(int cno, int tno) {
     
		String sql = "delete from t_tc where cno = ? and tno = ?";
		Object[] params = {
     cno,tno};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Course> findAll() {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Course> list = new ArrayList<Course>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_course c"
					+ " join t_tc tc"
					+ " on (c.cno = tc.cno)"
					+ " join t_teacher t"
					+ " on (tc.tno = t.tno)"
					+ " order by c.cno";
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行课程各个字段的值
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				Date periodstart = rs.getDate("periodstart");
				Date periodend = rs.getDate("periodend");
				// 封装成课程对象
				Course course = new Course(cno,name, credit, periodstart, periodend);
				//取出结果集中教师各个字段的值
				int tno = rs.getInt("tno");
				String tname = rs.getString("tname");
				String password = rs.getString("password");
				long phone = rs.getLong("phone");
				Date hiredate = rs.getDate("hiredate");
				String remark = rs.getString("remark");
				//封装成教师对象
				Teacher teacher = new Teacher(tno,tname, password, phone, hiredate, remark);
				
				//将教师加入课程
				course.setTeacher(teacher);
				list.add(course);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}


}

TeacherDaoImpl.java

package com.bluehonour.sscs.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.bluehonour.sscs.dao.TeacherDao;
import com.bluehonour.sscs.entity.Course;
import com.bluehonour.sscs.entity.Student;
import com.bluehonour.sscs.entity.Teacher;
import com.bluehonour.sscs.util.DBUtils;

public class TeacherDaoImpl implements TeacherDao {
     

	@Override
	public int save(Teacher teacher) {
     
		String sql = "insert into t_teacher(tname,password,phone,hiredate,remark)  values(?,?,?,?,?) ";
		Object[] params = {
     teacher.getTname(),teacher.getPassword(),teacher.getPhone(),teacher.getHiredate(),teacher.getRemark()};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Teacher> findAll() {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		List<Teacher> list = new ArrayList<Teacher>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_teacher order by tno";
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				int tno = rs.getInt("tno");
				String tname = rs.getString("tname");
				String password = rs.getString("password");
				long phone = rs.getLong("phone");
				Date hiredate = rs.getDate("hiredate");
				String remark = rs.getString("remark");
				// 封装成对象
				Teacher teacher = new Teacher(tno,tname, password, phone, hiredate, remark);
				list.add(teacher);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}

	@Override
	public int delete(int tno) {
     
		String sql = "delete  from t_teacher where tno = ?";
		Object[] params = {
     tno };
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public Teacher findById(int tno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Teacher teacher = null;
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select * from t_teacher where tno = " + tno;
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			if (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				String tname = rs.getString("tname");
				String password = rs.getString("password");
				long phone = rs.getLong("phone");
				Date hiredate = rs.getDate("hiredate");
				String remark = rs.getString("remark");
				// 封装成对象
				teacher = new Teacher(tno, tname, password, phone, hiredate, remark);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return teacher;
	}

	@Override
	public int update(Teacher teacher) {
     
		String sql = "update t_teacher set tname=?,password=?,phone=?,hiredate=?,remark=? where tno=?";
		Object[] params = {
     teacher.getTname(),teacher.getPassword(),teacher.getPhone(),teacher.getHiredate(),teacher.getRemark(),teacher.getTno()};
		return DBUtils.executeUpdate(sql, params);
	}

	@Override
	public List<Course> getAssumeCourse(int tno) {
     
		Connection connection = null;
		PreparedStatement preparedStatement = null;
		ResultSet rs = null;
		Course course = null;
		List<Course> list = new ArrayList<>();
		try {
     
			// 建立连接
			connection = DBUtils.getConnection();
			// 向数据库发送sql命令并得到结果
			String sql = "select c.* from t_tc tc " + 
					"LEFT JOIN t_teacher t on t.tno = tc.tno " + 
					"LEFT JOIN t_course c on c.cno = tc.cno " + 
					"where tc.tno = " + tno ;
			preparedStatement = connection.prepareStatement(sql);
			rs = preparedStatement.executeQuery();
			// 处理返回结果
			while (rs.next()) {
     
				// 取出结果集当前行各个字段的值
				int cno = rs.getInt("cno");
				String name = rs.getString("name");
				int credit = rs.getInt("credit");
				Date periodstart = rs.getDate("periodstart");
				Date periodend = rs.getDate("periodend");
				// 封装成对象
				course = new Course(cno,name, credit, periodstart, periodend);
				list.add(course);
			}
		} catch (SQLException e) {
     
			e.printStackTrace();
		} finally {
     
			DBUtils.closeAll(rs, preparedStatement, connection);
		}
		return list;
	}


}

addAdmin.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head lang="en">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>增加管理员title>
<link rel="stylesheet" type="text/css" href="'/css/add.css'/>">
 <script type="text/javascript" src="${pageContext.request.contextPath }/My97DatePicker/WdatePicker.js">script>
 <script type="text/javascript"
	src="${pageContext.request.contextPath }/kindeditor/kindeditor-all.js">script>
<script type="text/javascript"
	src="${pageContext.request.contextPath }/kindeditor/lang/zh_CN.js">script>
 <script>
	KindEditor.ready(function(K) {
       
		filterMode: false,//是否开启过滤模式
		window.editor = K.create('#introduction-id');
	});
script>
head>
<body>

	<div class="nav">
	<%-- 	${error }
		<div><img src="${pageContext.request.contextPath }/images/register_admin.jpg">div> --%>
		
		<%
			if(request.getAttribute("error") != null){
		%>
				<div><img src="${pageContext.request.contextPath }/images/add_admin_error.jpg">div>
		<%
			} else{
		%>
				<div><img src="${pageContext.request.contextPath }/images/register_admin.jpg">div>
		<%
			} 
		%>
		<div class="nav1">
			<form action="${pageContext.request.contextPath }/addAdmin.do" method="post">
				<p>
					<label for="userId">管理员账号：label> <input type="text" name="userId" id="userId""><span>请输入4-10位用户名span>
				p>
				<p>
					<label for="userName">真实姓名：label> <input type="text" name="userName"
					 	id="userName" value=""><span>请输入您的真实姓名span>
				p>
				<p>
					<label for="passWord">密码：label> <input type="password" name="passWord"
						id="passWord" value="" size="20px"><span>密码为6-16位span>
				p>
				<p>
					<label for="rePassWord">确认密码：label> <input type="password" name="rePassWord"
						id="rePassWord" value="" size="20px"><span>请再次输入密码span>
				p>
				<p>
					<label for="age">年龄：label> <input type="text" name="age" id="age" value=""><span>请输入年龄span>
				p>
				<p>
					<label for="score">成绩：label> <input type="text" name="score" id="score" value=""><span>请输入成绩span>
				p>
				<p>
					<label for="enterDate">入职时间：label> <input type="text" name="enterDate"
						id="enterDate" value="" onfocus="WdatePicker({highLineWeekDay:true,isShowToday:true,isShowWeek:true})"><span>请输入入职时间span>
				p>
				<p>
					<label for="introduction">简介：label>
                	<textarea  class="no" name="introduction" id="introduction-id"
						style=" width: 700px; height: 200px; visibility: hidden; display: block;">
					textarea>
				p>
				<button class="sub">
					<img src="${pageContext.request.contextPath }/images/button.gif">
				button>
			form>
		div>
	div>
	<script>
		window.onload = function(e) {
       
			var form = document.querySelector('form');
			var userId = document.querySelector('#userId');
			var userName = document.querySelector('#userName');
			var passWord = document.querySelector('#passWord');
			var rePassWord = document.querySelector('#rePassWord');
			var age = document.querySelector('#age');
			var score = document.querySelector('#score');
			var enterDate = document.querySelector('#enterDate');
			var span = document.querySelectorAll('span');

			//onsubmit事件
			form.onsubmit = function(e) {
       
				var userId = checkUserId();
				if (!userId) {
       
					return false;
				}
				var username = checkUserName();
				if (!username) {
       
					return false;
				}
				var password = checkPassWord();
				if (!password) {
       
					return false;
				}
				var rePassWord = checkRePassWord();
				if (!rePassWord) {
       
					return false;
				}
				var age = checkAge();
				if (!age) {
       
					return false;
				}
				var score = checkScore();
				if (!score) {
       
					return false;
				}
				var enterDate = checkEnterDate();
				if (!enterDate) {
       
					return false;
				}
				return true;
			};

			//onblur失去焦点事件
			userId.onblur = function(e) {
       
				checkUserId();
			};
			userName.onblur = function(e) {
       
				checkUserName();
			};
			passWord.onblur = function(e) {
       
				checkPassWord();
			};
			rePassWord.onblur = function(e) {
       
				checkRePassWord();
			};
			age.onblur = function(e) {
       
				checkAge();
			};
			score.onblur = function(e) {
       
				checkScore();
			};
			enterDate.onblur = function(e) {
       
				checkEnterDate();
			};

			//---------------------------------函数封装-------------------------------------------------------------
			//管理员账户（3-10位）
			function checkUserId(e) {
       
				if (userId.value.length == 0) {
       
					span[0].innerText = '账户不能为空';
					span[0].className = 'danger';
					return false;
				}
				var pattern = /^[A-Za-z0-9]{3,10}$/;
				if (!pattern.test(userId.value)) {
       
					span[0].innerText = '账户格式错误，请重新输入';
					span[0].className = 'danger';
					return false;
				}
				span[0].innerText = '管理员账户输入正确';
				span[0].className = 'success';
				return true;
			}

			//真实姓名（2-4位汉字）
			function checkUserName(e) {
       
				if (userName.value.length == 0) {
       
					span[1].innerText = '真实姓名不能为空';
					span[1].className = 'danger';
					return false;
				}
				var pattern = /^[\u4e00-\u9fa5]{2,4}$/;
				if (!pattern.test(userName.value)) {
       
					span[1].innerText = '真实姓名格式错误，请重新输入';
					span[1].className = 'danger';
					return false;
				}
				span[1].innerText = '真实姓名输入正确';
				span[1].className = 'success';
				return true;
			}
			//登录密码（6-16位）
			function checkPassWord(e) {
       
				if (passWord.value.length == 0) {
       
					span[2].innerText = '密码不能为空';
					span[2].className = 'danger';
					return false;
				}
				var pattern = /^[A-Za-z0-9]{6,16}$/;
				if (!pattern.test(passWord.value)) {
       
					span[2].innerText = '密码不符合格式，请重新输入';
					span[2].className = 'danger';
					return false;
				}
				span[2].innerText = '密码输入正确';
				span[2].className = 'success';
				return true;
			}

			//重复登录密码
			function checkRePassWord(e) {
       
				if (rePassWord.value.length == 0) {
       
					span[3].innerText = '重复密码不能为空';
					span[3].className = 'danger';
					return false;
				}
				if (rePassWord.value != passWord.value) {
       
					span[3].innerText = '两次输入的密码不一致，请重新输入';
					span[3].className = 'danger';
					return false;
				}
				span[3].innerText = '两次密码一致';
				span[3].className = 'success';
				return true;
			}

			//年龄（1-3位）
			function checkAge(e) {
       
				if (age.value.length == 0) {
       
					span[4].innerText = '年龄不能为空';
					span[4].className = 'danger';
					return false;
				}
				var pattern = /^[1-9]{1,3}$/;
				if (!pattern.test(age.value)) {
       
					span[4].innerText = '年龄格式错误，请重新输入';
					span[4].className = 'danger';
					return false;
				}
				span[4].innerText = '年龄输入正确';
				span[4].className = 'success';
				return true;
			}

			//成绩
			function checkScore(e) {
       
				if (score.value.length == 0) {
       
					span[5].innerText = '成绩不能为空';
					span[5].className = 'danger';
					return false;
				}
				/*   var pattern = /^[0-9]+\.?[0-9]*$/; */
				var pattern = /^[0-9]+\.?[0-9]*$/;
				if (!pattern.test(score.value)) {
       
					span[5].innerText = '成绩格式错误，请重新输入';
					span[5].className = 'danger';
					return false;
				}
				span[5].innerText = '成绩输入正确';
				span[5].className = 'success';
				return true;
			}

			//入职时间（格式xxxx-xx-xx)
			function checkEnterDate(e) {
       
				if (enterDate.value.length == 0) {
       
					span[6].innerText = '入职时间不能为空';
					span[6].className = 'danger';
					return false;
				}
				var pattern = /^[0-9]{4}\-?[0-9]{1,2}\-?[0-9]{1,2}$/;
				if (!pattern.test(enterDate.value)) {
       
					span[6].innerText = '时间格式：xxxx-xx-xx';
					span[6].className = 'danger';
					return false;
				}
				span[6].innerText = '时间格式正确';
				span[6].className = 'success';
				return true;
			}

		}
	script>
body>
html>

addCourse.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head lang="en">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>添加学生title>
    <link rel="stylesheet" type="text/css" href="'/css/add.css'/>">
    <script type="text/javascript" src="${pageContext.request.contextPath }/My97DatePicker/WdatePicker.js">script>
head>
<body>

<div class="nav">
		<%
			if(request.getAttribute("error") != null){
		%>
				<div><img src="${pageContext.request.contextPath }/images/add_course_error.jpg">div>
		<%
			} else{
		%>
				<div><img src="${pageContext.request.contextPath }/images/register_course.jpg">div>
		<%
			} 
		%>
    
    <div class="nav1">
        <form action="${pageContext.request.contextPath }/addCourse.do" method="post">
            <p>
                <label for="name">课程名称：label>
                <input type="text" id="name" name="name" value="">
            p>
             <p>
                <label for="name">学分：label>
                <input type="text" id="credit" name="credit" value="">
            p>
             <p>
            	<label for="periodStart">开课日期:label>
           	 <input type="text" id="periodStart" name="periodStart" value="" onfocus="WdatePicker({highLineWeekDay:true,isShowToday:true,isShowWeek:true})">
            p>
             <p>
            	<label for="periodEnd">结课日期:label>
           	 <input type="text" id="periodEnd" name="periodEnd" value="" onfocus="WdatePicker({highLineWeekDay:true,isShowToday:true,isShowWeek:true})">
            p>
            <div align="center">
	            <input type="submit" value="保存"  />
            div>
            <div align="center">
				${error }
            div>
        form>
    div>
div>
    
body>
html>

addStudent.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head lang="en">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>添加学生title>
    <link rel="stylesheet" type="text/css" href="'/css/add.css'/>">
     <script language="javascript" type="text/javascript" src="${pageContext.request.contextPath }/scripts/student.js">script>
      <script type="text/javascript" src="${pageContext.request.contextPath }/My97DatePicker/WdatePicker.js">script>
head>
<body>

<div class="nav">
		<%
			if(request.getAttribute("error") != null){
		%>
				<div><img src="${pageContext.request.contextPath }/images/add_admin_error.jpg">div>
		<%
			} else{
		%>
				<div><img src="${pageContext.request.contextPath }/images/register_student.jpg">div>
		<%
			} 
		%>
    
    <div class="nav1">
        <form action="${pageContext.request.contextPath }/addStudent.do" method="post">
            <p>
                <label for="name">学生姓名：label>
                <input type="text" id="name" name="name" value=""><span>请输入学生姓名span>
            p>
            <p>
                <label for="password">密码：label>
                <input type="text" id="password" name="password" value=""><span>密码为6-16位span>
            p>
            <p>
                <label for="classno">班级：label>
                <select name="classno" id="classno">
                	<option>--请选择班级--option>
                	<c:forEach items="${classList }" var="clazz">
        				<option>--${clazz.classno}班--option>
        			c:forEach>
                select>
               <span style="margin-left: 100px">请输入班级span>
            p>
            <p>
                <label>性别：label>
                <input type="radio" name="sex" value="男" checked="checked" >男
                <input type="radio" name="sex" value="女">女 
            p>
           
            <p>
            	<label for="tel">关联手机号:label>
           	 <input type="text" id="tel" name="tel" value=""><span>请输入手机号span>
            p>
             <p>
            	<label for="birthday">出生年月日:label>
           	 <input type="text" id="birthday" name="birthday" value="" onfocus="WdatePicker({highLineWeekDay:true,isShowToday:true,isShowWeek:true})"><span>请输入出生年月日span>
            p>
           	<p>
            	<label for="remark">评论:label>
            	 <select name="remark" id="remark">
                	<option>--请选择--option>
                	<option>优秀option>
                	<option>良好option>
                	<option>合格option>
                	<option>差劲option>
                select>
               	<span style="margin-left: 100px">请对该学生进行评论span>
            p>
            <button class="sub">
                <img src="${pageContext.request.contextPath }/images/submit.jpg">
            button>
            <div align="center">
				${error }
            div>
        form>
        
    div>
div>
    
body>
html>

addTeacher.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head lang="en">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加教师title>
<link rel="stylesheet" type="text/css"
	href="'/css/add.css'/>">
<script language="javascript" type="text/javascript"
	src="${pageContext.request.contextPath }/scripts/teacher.js">script>
<script type="text/javascript"
	src="${pageContext.request.contextPath }/My97DatePicker/WdatePicker.js">script>
<script type="text/javascript"
	src="${pageContext.request.contextPath }/kindeditor/kindeditor-all.js">script>
<script type="text/javascript"
	src="${pageContext.request.contextPath }/kindeditor/lang/zh_CN.js">script>
<script>
	KindEditor.ready(function(K) {
       
		filterMode: false,//是否开启过滤模式
		window.editor = K.create('#remark-id');
	});
script>

head>
<body>

	<div class="nav">
		<%
			if (request.getAttribute("error") != null) {
		%>
		<div><img src="${pageContext.request.contextPath }/images/add_teacher_error.jpg">div>
		<%
			} else {
		%>
		<div><img src="${pageContext.request.contextPath }/images/register_teacher.jpg">div>
		<%
			}
		%>

		<div class="nav1">
			<form action="${pageContext.request.contextPath }/addTeacher.do"
				method="post">
				<p>
					<label for="name">教师姓名：label> <input type="text" id="name"
						name="name" value=""><span>请输入教师姓名span>
				p>
				<p>
					<label for="password">教师密码：label> <input type="text"
						id="password" name="password" value=""><span>密码为6-16位span>
				p>

				<p>
					<label for="tel">联系方式：label> <input type="text" id="tel"
						name="tel" value=""><span>请输入手机号span>
				p>
				<p>
					<label for="hiredate">入职时间：label> <input type="text"
						id="hiredate" name="hiredate" value=""
						onfocus="WdatePicker({highLineWeekDay:true,isShowToday:true,isShowWeek:true})"><span>请输入入职时间span>
				p>
				<p>
					<label for="remark">评论：label>
					<textarea class="no" name="remark" id="remark-id"
						style="width: 700px; height: 200px; visibility: hidden; display: block;">
					textarea>
				p>
				<button class="sub">
					<img src="${pageContext.request.contextPath }/images/submit.jpg">
				button>
				<div align="center">${error }div>
			form>
		div>
	div>


body>
html>

四、其他

1.其他系统实现

JavaWeb系统系列实现

Java+JSP实现学生图书管理系统
Java+JSP实现学生信息管理系统
Java+JSP实现用户信息管理系统
Java+Servlet+JSP实现学生成绩管理系统
Java+Servlet+JSP实现宠物诊所管理系统
Java+SSM+Easyui实现网上考试系统
Java+Springboot+H-ui实现营销管理系统
Java+Springboot+Mybatis+Bootstrap实现网上商城系统

JavaSwing系统系列实现

Java+Swing实现斗地主游戏
Java+Swing实现图书管理系统
Java+Swing实现医院管理系统
Java+Swing实现仓库管理系统
Java+Swing实现考试管理系统
Java+Swing实现通讯录管理系统
Java+Swing实现停车场管理系统
Java+Swing实现学生信息管理系统
Java+Swing实现学生宿舍管理系统
Java+Swing实现学生选课管理系统
Java+Swing实现学生成绩管理系统
Java+Swing实现学校教材管理系统
Java+Swing实现学校教务管理系统
Java+Swing实现企业人事管理系统
Java+Swing实现电子相册管理系统
Java+Swing实现自助取款机(ATM)系统
Java+Swing实现超市管理系统-TXT存储信息
Java+Swing实现宠物商店管理系统-TXT存储信息

2.获取源码

点击以下链接获取源码，数据库文件在sql文件夹下面。
Java+JSP+Servlet+Mysql实现Web学生选课管理系统源码

3.备注

如有侵权请联系我删除。

4.鸡汤

运动使人轻松！