900字范文 > Java+Servlet+JSP+Mysql+Tomcat实现Web学生选课管理系统

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

时间：2020-05-25 04:24:49

Java实现Web学生选课管理系统

一、系统介绍1.软件环境2.系统功能3.数据库二、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.javaCourseDaoImpl.javaStudentCourseTeacherDaoImpl.javaStudentDaoImpl.javaTeacherCourseDaoImpl.javabTeacherDaoImpl.javaaddAdmin.jspaddCourse.jspaddStudent.jspaddTeacher.jsp四、其他1.其他系统实现JavaWeb系统系列实现JavaSwing系统系列实现2.获取源码3.备注4.鸡汤

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 TransferSource Server : MySQLSource Server Type : MySQLSource Server Version : 80013Source Host : localhost:3306Source Schema : jsp_servlet_selectcourseTarget Server Type : MySQLTarget Server Version : 80013File Encoding : 65001Date: 23/06/ 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, ' ', '-06-12');INSERT INTO `t_admin` VALUES ('admin1', '水坚石青', 'admin1', 25, 99.0, '', '-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, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1002, '数据结构', 4, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1003, 'j2ee', 4, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1004, '计算机网络', 4, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1005, '计算机组成原理', 4, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1007, '编译原理', 4, '-02-01', '-08-08');INSERT INTO `t_course` VALUES (1008, 'C语言', 4, '-02-01', '-02-01');INSERT INTO `t_course` VALUES (1009, 'c++', 4, '-01-02', '-05-28');INSERT INTO `t_course` VALUES (1010, '1', 1, '-06-22', '-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 (001, 1002, 1001, 100.00);INSERT INTO `t_sc` VALUES (001, 1004, 1001, 99.00);INSERT INTO `t_sc` VALUES (001, 1004, 1006, NULL);INSERT INTO `t_sc` VALUES (001, 1005, 1002, NULL);INSERT INTO `t_sc` VALUES (001, 1007, 1004, NULL);INSERT INTO `t_sc` VALUES (001, 1008, 1002, NULL);INSERT INTO `t_sc` VALUES (001, 1008, 1004, NULL);INSERT INTO `t_sc` VALUES (001, 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 = 570 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;-- ------------------------------ Records of t_student-- ----------------------------INSERT INTO `t_student` VALUES (001, '123456', '李四', 15788888888, '女', '-06-22', 1525, '优秀');INSERT INTO `t_student` VALUES (002, '123456', '王茹', 15788888888, '女', '-05-28', 1520, '良好');INSERT INTO `t_student` VALUES (003, '123456', '张三', 15788888888, '女', '-05-28', 1520, '良好');INSERT INTO `t_student` VALUES (004, '123456', '王五', 15788888888, '女', '-05-28', 1520, '优秀');INSERT INTO `t_student` VALUES (005, '123456', '李浩', 15788888888, '女', '-05-28', 1520, '合格');INSERT INTO `t_student` VALUES (006, '123456', '黄县', 15788888888, '女', '-05-28', 1520, '良好');INSERT INTO `t_student` VALUES (007, '123456', '钱一', 15788888888, '女', '-05-28', 1520, '优秀');INSERT INTO `t_student` VALUES (009, '123456', '赵括', 15788888888, '女', '-05-28', 1520, '优秀');INSERT INTO `t_student` VALUES (010, '123456', '赵括', 15788888888, '女', '-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, '-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, '-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, '-05-14', '<span style=\"font-family:Arial Black;\"><span style=\"color:#E53333;\"><span style=\"color:#E53333;\">郭老师很认真负责</span></span></span>');INSERT INTO `t_teacher` VALUES (1004, '赵丽', '123456', 15722222222, '-04-03', NULL);INSERT INTO `t_teacher` VALUES (1005, '齐兴斌', '123456', 15711111111, '-05-28', NULL);INSERT INTO `t_teacher` VALUES (1006, '尹少平', '123456', 15777777777, '-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{@Overridepublic 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;}@Overridepublic 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

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 {@Overridepublic 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);}@Overridepublic 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 (o = o)"+ " 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;}@Overridepublic 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.* FROMt_tc a "+ "LEFT JOIN t_course c "+ "ON o = o "+ "LEFT JOIN t_teacher t "+ "ON a.tno = t.tno "+ "WHERE (o, a.tno) NOT IN "+ "( SELECTcno,tno "+ "FROMt_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;}@Overridepublic 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);}@Overridepublic 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," + "ame," + "o," + "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 o = o" + " WHERE" + "sc.tno = " + tno +" ORDER BY" + "o," + "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;}@Overridepublic 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 {@Overridepublic 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);}@Overridepublic 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;}@Overridepublic int del(int sno) {String sql = "delete from t_student where sno = ?";Object[] params = {sno };return DBUtils.executeUpdate(sql, params);}@Overridepublic 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;}@Overridepublic 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);}@Overridepublic 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;}@Overridepublic 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;}@Overridepublic 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

TeacherDaoImpl.java

addAdmin.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="/jsp/jstl/core" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "/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="<c:url value='/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>