数据库大实验展示（上）

来吧，展示！学生信息管理系统

上代码啦啦啦

管理员的登录界面：

package com.artisan.dao;

import com.artisan.model.Admin;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class AdminDao extends BaseDao {
	/**
	 * 管理员登陆
	 */
	public Admin login(Admin admin){
		String sql = "select * from s_admin where name=? and password=?";
		Admin adminRst = null;
		try {
			PreparedStatement prst = con.prepareStatement(sql);//把sql语句传给数据库操作对象
			prst.setString(1, admin.getName());
			prst.setString(2, admin.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(executeQuery.next()){
				adminRst = new Admin();
				adminRst.setId(executeQuery.getInt("id"));
				adminRst.setName(executeQuery.getString("name"));
				adminRst.setPassword(executeQuery.getString("password"));
				adminRst.setCreateDate(executeQuery.getString("createDate"));
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return adminRst;
	}
	public String editPassword(Admin admin,String newPassword){
		String sql = "select * from s_admin where id=? and password=?";
		PreparedStatement prst = null;
		int id = 0;
		try {
			prst = con.prepareStatement(sql);
			prst.setInt(1, admin.getId());
			prst.setString(2, admin.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(!executeQuery.next()){
				String retString = "旧密码错误！";
				return retString;
			}
			id = executeQuery.getInt("id");
		} catch (SQLException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}//把sql语句传给数据库操作对象
		String retString = "修改失败";
		String sqlString = "update s_admin set password = ? where id = ?";
		try {
			prst = con.prepareStatement(sqlString);
			prst.setString(1, newPassword);
			prst.setInt(2, id);
			int rst = prst.executeUpdate();
			if(rst > 0){
				retString = "密码修改成功！";
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}//把sql语句传给数据库操作对象
		return retString;
	}
}

 创建对数据库的连接对象，整个程序与数据库相关都用这个对象

package com.artisan.dao;

import java.sql.Connection;
import java.sql.SQLException;

import com.artisan.util.DbUtil;

/**
 * 
 * @author llq
 *创建对数据库连接对象，整个项目与数据库打交道都用这一个对象.
 */
public class BaseDao {
	public Connection con = new DbUtil().getCon();
	public void closeDao(){
		try {
			con.close();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

 班级信息与数据库的操作：

package com.artisan.dao;

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

import com.artisan.model.StudentClass;
import com.artisan.util.StringUtil;

/**
 * 
 * 班级信息与数据库的操作
 * @author llq
 *
 */
public class ClassDao extends BaseDao {
	public boolean addClass(StudentClass scl){
		String sql = "insert into s_class values(null,?,?)";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, scl.getName());
			preparedStatement.setString(2, scl.getInfo());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public List getClassList(StudentClass studentClass){
		List retList = new ArrayList();
		String sqlString = "select * from s_class";
		if(!StringUtil.isEmpty(studentClass.getName())){
			sqlString += " where name like '%"+studentClass.getName()+"%'";
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sqlString);
			ResultSet executeQuery = preparedStatement.executeQuery();
			while(executeQuery.next()){
				StudentClass sc = new StudentClass();
				sc.setId(executeQuery.getInt("id"));
				sc.setName(executeQuery.getString("name"));
				sc.setInfo(executeQuery.getString("info"));
				retList.add(sc);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return retList;
	}
	public boolean delete(int id){
		String sql = "delete from s_class where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean update(StudentClass sc){
		String sql = "update s_class set name=?, info=? where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, sc.getName());
			preparedStatement.setString(2, sc.getInfo());
			preparedStatement.setInt(3, sc.getId());
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
}

课程信息的操作 

package com.artisan.dao;

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

import com.artisan.model.Course;
import com.artisan.util.StringUtil;

/**
 * 
 * @author llq
 *课程信息操作数据库
 */
public class CourseDao extends BaseDao {
	public boolean addCourse(Course course){
		String sql = "insert into s_course values(null,?,?,?,?,0)";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, course.getName());
			preparedStatement.setInt(2, course.getTeacher_id());
			preparedStatement.setInt(3, course.getMax_student_num());
			preparedStatement.setString(4, course.getInfo());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public List getCourseList(Course course){
		List retList = new ArrayList();
		StringBuffer sqlString = new StringBuffer("select * from s_course");
		if(!StringUtil.isEmpty(course.getName())){
			sqlString.append(" and name like '%"+course.getName()+"%'");
		}
		if(course.getTeacher_id() != 0){
			sqlString.append(" and teacher_id ="+course.getTeacher_id());
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sqlString.toString().replaceFirst("and", "where"));
			ResultSet executeQuery = preparedStatement.executeQuery();
			while(executeQuery.next()){
				Course c = new Course();
				c.setId(executeQuery.getInt("id"));
				c.setName(executeQuery.getString("name"));
				c.setTeacher_id(executeQuery.getInt("teacher_id"));
				c.setMax_student_num(executeQuery.getInt("max_student_num"));
				c.setInfo(executeQuery.getString("info"));
				c.setSelected_num(executeQuery.getInt("selected_num"));
				retList.add(c);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return retList;
	}
	public boolean delete(int id){
		String sql = "delete from s_course where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean update(Course course){
		String sql = "update s_course set name=?, teacher_id=?,max_student_num=?,info=? where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, course.getName());
			preparedStatement.setInt(2, course.getTeacher_id());
			preparedStatement.setInt(3, course.getMax_student_num());
			preparedStatement.setString(4, course.getInfo());
			preparedStatement.setInt(5, course.getId());
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean selectedEnable(int course_id){
		String sql = "select * from s_course where id=?";
		try {
			PreparedStatement prst = con.prepareStatement(sql);//把sql语句传给数据库操作对象
			prst.setInt(1, course_id);
			ResultSet executeQuery = prst.executeQuery();
			if(executeQuery.next()){
				int max_student_num = executeQuery.getInt("max_student_num");
				int selected_num = executeQuery.getInt("selected_num");
				if(selected_num >= max_student_num)return false;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return true;
	}
	public boolean updateSelectedNum(int course_id,int num){
		String sql = "update s_course set selected_num = selected_num + ? where id = ?";
		if(num < 0){
			sql = "update s_course set selected_num = selected_num - ? where id = ?";
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, 1);
			preparedStatement.setInt(2, course_id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			
		}
		return false;
	}
}

选课表的相关操作 

package com.artisan.dao;

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

import com.artisan.model.SelectedCourse;

/**
 * 
 * @author llq
 *选课表操作
 */
public class SelectedCourseDao extends BaseDao {
	public boolean addSelectedCourse(SelectedCourse selectedCourse){
		String sql = "insert into s_selected_course values(null,?,?)";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, selectedCourse.getStudent_id());
			preparedStatement.setInt(2, selectedCourse.getCourse_id());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean updateSelectedCourse(SelectedCourse selectedCourse){
		String sql = "update s_selected_course set student_id = ?,course_id = ? where id = ?";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, selectedCourse.getStudent_id());
			preparedStatement.setInt(2, selectedCourse.getCourse_id());
			preparedStatement.setInt(3, selectedCourse.getId());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public List getSelectedCourseList(SelectedCourse selectedCourse){
		List retList = new ArrayList();
		StringBuffer sqlString = new StringBuffer("select * from s_selected_course");
		if(selectedCourse.getStudent_id() != 0){
			sqlString.append(" and student_id = "+selectedCourse.getStudent_id());
		}
		if(selectedCourse.getCourse_id() != 0){
			sqlString.append(" and course_id ="+selectedCourse.getCourse_id());
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sqlString.toString().replaceFirst("and", "where"));
			ResultSet executeQuery = preparedStatement.executeQuery();
			while(executeQuery.next()){
				SelectedCourse sc = new SelectedCourse();
				sc.setId(executeQuery.getInt("id"));
				sc.setStudent_id(executeQuery.getInt("student_id"));
				sc.setCourse_id(executeQuery.getInt("course_id"));
				retList.add(sc);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return retList;
	}
	public boolean isSelected(SelectedCourse selectedCourse){
		String sql = "select * from s_selected_course where student_id=? and course_id = ?";
		try {
			PreparedStatement prst = con.prepareStatement(sql);//把sql语句传给数据库操作对象
			prst.setInt(1, selectedCourse.getStudent_id());
			prst.setInt(2, selectedCourse.getCourse_id());
			ResultSet executeQuery = prst.executeQuery();
			if(executeQuery.next()){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean delete(int id){
		String sql = "delete from s_selected_course where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public Boolean deleteBySids(int parseInt) {
		// TODO Auto-generated method stub
		String sql = "delete from s_selected_course where student_id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, parseInt);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
		
	}
}

学生表的操作

package com.artisan.dao;

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

import com.artisan.model.Admin;
import com.artisan.model.Student;
import com.artisan.model.StudentClass;
import com.artisan.util.StringUtil;

public class StudentDao extends BaseDao {
	public boolean addStudent(Student student){
		String sql = "insert into s_student values(null,?,?,?,?)";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, student.getName());
			preparedStatement.setInt(2, student.getClassId());
			preparedStatement.setString(3, student.getPassword());
			preparedStatement.setString(4, student.getSex());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public List getStudentList(Student student){
		List retList = new ArrayList();
		StringBuffer sqlString = new StringBuffer("select * from s_student");
		if(!StringUtil.isEmpty(student.getName())){
			sqlString.append(" and name like '%"+student.getName()+"%'");
		}
		if(student.getClassId() != 0){
			sqlString.append(" and classId ="+student.getClassId());
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sqlString.toString().replaceFirst("and", "where"));
			ResultSet executeQuery = preparedStatement.executeQuery();
			while(executeQuery.next()){
				Student s = new Student();
				s.setId(executeQuery.getInt("id"));
				s.setName(executeQuery.getString("name"));
				s.setClassId(executeQuery.getInt("classId"));
				s.setSex(executeQuery.getString("sex"));
				s.setPassword(executeQuery.getString("password"));
				retList.add(s);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return retList;
	}
	public boolean delete(int id){
		String sql = "delete from s_student where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean update(Student student){
		String sql = "update s_student set name=?, classId=?,sex=?,password=? where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, student.getName());
			preparedStatement.setInt(2, student.getClassId());
			preparedStatement.setString(3, student.getSex());
			preparedStatement.setString(4, student.getPassword());
			preparedStatement.setInt(5, student.getId());
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public String editPassword(Student student,String newPassword){
		String sql = "select * from s_student where id=? and password=?";
		PreparedStatement prst = null;
		int id = 0;
		try {
			prst = con.prepareStatement(sql);
			prst.setInt(1, student.getId());
			prst.setString(2, student.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(!executeQuery.next()){
				String retString = "旧密码错误！";
				return retString;
			}
			id = executeQuery.getInt("id");
		} catch (SQLException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}//把sql语句传给数据库操作对象
		String retString = "修改失败";
		String sqlString = "update s_student set password = ? where id = ?";
		try {
			prst = con.prepareStatement(sqlString);
			prst.setString(1, newPassword);
			prst.setInt(2, id);
			int rst = prst.executeUpdate();
			if(rst > 0){
				retString = "密码修改成功！";
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}//把sql语句传给数据库操作对象
		return retString;
	}
	public Student login(Student student){
		String sql = "select * from s_student where name=? and password=?";
		Student studentRst = null;
		try {
			PreparedStatement prst = con.prepareStatement(sql);//把sql语句传给数据库操作对象
			prst.setString(1, student.getName());
			prst.setString(2, student.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(executeQuery.next()){
				studentRst = new Student();
				studentRst.setId(executeQuery.getInt("id"));
				studentRst.setClassId(executeQuery.getInt("classId"));
				studentRst.setName(executeQuery.getString("name"));
				studentRst.setPassword(executeQuery.getString("password"));
				studentRst.setSex(executeQuery.getString("sex"));
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return studentRst;
	}
}

教师信息的操作

package com.artisan.dao;

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

import com.artisan.model.Admin;
import com.artisan.model.Student;
import com.artisan.model.StudentClass;
import com.artisan.util.StringUtil;

public class StudentDao extends BaseDao {
	public boolean addStudent(Student student){
		String sql = "insert into s_student values(null,?,?,?,?)";
		try {
			java.sql.PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, student.getName());
			preparedStatement.setInt(2, student.getClassId());
			preparedStatement.setString(3, student.getPassword());
			preparedStatement.setString(4, student.getSex());
			if(preparedStatement.executeUpdate() > 0)return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public List getStudentList(Student student){
		List retList = new ArrayList();
		StringBuffer sqlString = new StringBuffer("select * from s_student");
		if(!StringUtil.isEmpty(student.getName())){
			sqlString.append(" and name like '%"+student.getName()+"%'");
		}
		if(student.getClassId() != 0){
			sqlString.append(" and classId ="+student.getClassId());
		}
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sqlString.toString().replaceFirst("and", "where"));
			ResultSet executeQuery = preparedStatement.executeQuery();
			while(executeQuery.next()){
				Student s = new Student();
				s.setId(executeQuery.getInt("id"));
				s.setName(executeQuery.getString("name"));
				s.setClassId(executeQuery.getInt("classId"));
				s.setSex(executeQuery.getString("sex"));
				s.setPassword(executeQuery.getString("password"));
				retList.add(s);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return retList;
	}
	public boolean delete(int id){
		String sql = "delete from s_student where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setInt(1, id);
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public boolean update(Student student){
		String sql = "update s_student set name=?, classId=?,sex=?,password=? where id=?";
		try {
			PreparedStatement preparedStatement = con.prepareStatement(sql);
			preparedStatement.setString(1, student.getName());
			preparedStatement.setInt(2, student.getClassId());
			preparedStatement.setString(3, student.getSex());
			preparedStatement.setString(4, student.getPassword());
			preparedStatement.setInt(5, student.getId());
			if(preparedStatement.executeUpdate() > 0){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}
	public String editPassword(Student student,String newPassword){
		String sql = "select * from s_student where id=? and password=?";
		PreparedStatement prst = null;
		int id = 0;
		try {
			prst = con.prepareStatement(sql);
			prst.setInt(1, student.getId());
			prst.setString(2, student.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(!executeQuery.next()){
				String retString = "旧密码错误！";
				return retString;
			}
			id = executeQuery.getInt("id");
		} catch (SQLException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}//把sql语句传给数据库操作对象
		String retString = "修改失败";
		String sqlString = "update s_student set password = ? where id = ?";
		try {
			prst = con.prepareStatement(sqlString);
			prst.setString(1, newPassword);
			prst.setInt(2, id);
			int rst = prst.executeUpdate();
			if(rst > 0){
				retString = "密码修改成功！";
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}//把sql语句传给数据库操作对象
		return retString;
	}
	public Student login(Student student){
		String sql = "select * from s_student where name=? and password=?";
		Student studentRst = null;
		try {
			PreparedStatement prst = con.prepareStatement(sql);//把sql语句传给数据库操作对象
			prst.setString(1, student.getName());
			prst.setString(2, student.getPassword());
			ResultSet executeQuery = prst.executeQuery();
			if(executeQuery.next()){
				studentRst = new Student();
				studentRst.setId(executeQuery.getInt("id"));
				studentRst.setClassId(executeQuery.getInt("classId"));
				studentRst.setName(executeQuery.getString("name"));
				studentRst.setPassword(executeQuery.getString("password"));
				studentRst.setSex(executeQuery.getString("sex"));
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return studentRst;
	}
}

 获得管理员信息

package com.artisan.model;


public class Admin{
	private int id;
	private String name;
	private String password;
	private String createDate;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getCreateDate() {
		return createDate;
	}
	public void setCreateDate(String createDate) {
		this.createDate = createDate;
	}
	
}

 获得课程信息的实体

package com.artisan.model;
/**
 * 
 * @author llq
 *课程信息实体
 */
public class Course {
	private int id;
	private String name;
	private int teacher_id;
	private int max_student_num;
	private String info;
	private int selected_num = 0;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getTeacher_id() {
		return teacher_id;
	}
	public void setTeacher_id(int teacher_id) {
		this.teacher_id = teacher_id;
	}
	public int getMax_student_num() {
		return max_student_num;
	}
	public void setMax_student_num(int max_student_num) {
		this.max_student_num = max_student_num;
	}
	public String getInfo() {
		return info;
	}
	public void setInfo(String info) {
		this.info = info;
	}
	public int getSelected_num() {
		return selected_num;
	}
	public void setSelected_num(int selected_num) {
		this.selected_num = selected_num;
	}
	public String toString(){
		return this.name;
	}
}

获得选课表信息

package com.artisan.model;
/**
 * 
 * @author llq
 *选课表
 */
public class SelectedCourse {
	private int id;
	private int student_id;
	private int course_id;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public int getStudent_id() {
		return student_id;
	}
	public void setStudent_id(int student_id) {
		this.student_id = student_id;
	}
	public int getCourse_id() {
		return course_id;
	}
	public void setCourse_id(int course_id) {
		this.course_id = course_id;
	}
	
}

 获得学生信息

package com.artisan.model;

public class Student {
	private int id;
	private String name;
	private int classId;
	private String password;
	private String sex;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getClassId() {
		return classId;
	}
	public void setClassId(int classId) {
		this.classId = classId;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public String toString(){
		return this.name;
	}
}

 获得班级信息

package com.artisan.model;
/**
 * 
 * @author llq
 *班级信息entity
 */
public class StudentClass {
	private int id;
	private String name;
	private String info;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getInfo() {
		return info;
	}
	public void setInfo(String info) {
		this.info = info;
	}
	@Override
	public String toString(){
		return this.name;
	}
}

获得教师信息表

package com.artisan.model;
/**
 * 
 * @author llq
 *教师信息表
 */
public class Teacher {
	private int id;
	private String name;
	private String sex;
	private String title;
	private int age;
	private String password;
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String toString(){
		return this.name;
	}
}

 用户类型

package com.artisan.model;

public enum UserType {
	ADMIN("系统管理员",0),TEACHER("教师",1),STUDENT("学生",2);
	private String name;
	private int index;
	private UserType(String name,int index){
		this.name = name;
		this.index = index;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getIndex() {
		return index;
	}
	public void setIndex(int index) {
		this.index = index;
	}
	@Override
	public String toString(){
		return this.name;
	}
}

 数据库的连接与关闭

package com.artisan.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DbUtil {
	private String dbUrl="jdbc:mysql://localhost:3306/db_student?useUnicode=true&characterEncoding=utf8"; // 数据库连接地址
	private String dbUserName="root"; // 用户名
	private String dbPassword="123"; // 密码
	private String jdbcName="com.mysql.jdbc.Driver"; // 驱动名称
	/**
	 * 获取数据库连接
	 * @return
	 * @throws Exception
	 */
	public Connection getCon(){
		try {
			Class.forName(jdbcName);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Connection con = null;
		try {
			con = DriverManager.getConnection(dbUrl, dbUserName, dbPassword);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return con;
	}
	/**
	 * 关闭数据库连接
	 * @param con
	 * @throws Exception
	 */
	public void closeCon(Connection con)throws Exception{
		if(con!=null){
			con.close();
		}
	}
	
	public static void main(String[] args) {
		DbUtil dbUtil=new DbUtil();
		try {
			dbUtil.getCon();
			System.out.println("数据库连接成功！");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.println("数据库连接失败");
		}
	}
}

 检测是否为空

package com.artisan.util;

public class StringUtil {
	public static boolean isEmpty(String str){
		if("".equals(str)|| str == null){
			return true;
		}
		return false;
	}
}

添加课程

package com.artisan.view;

import java.awt.EventQueue;

import javax.swing.JInternalFrame;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JLabel;

import java.awt.Font;

import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JComboBox;
import javax.swing.JTextArea;
import javax.swing.JButton;

import com.artisan.dao.CourseDao;
import com.artisan.dao.TeacherDao;
import com.artisan.model.Course;
import com.artisan.model.Teacher;
import com.artisan.util.StringUtil;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.List;

public class AddCourseFrm extends JInternalFrame {
	private JTextField courseNameTextField;
	private JTextField studentNumTextField;
	private JComboBox teacherListComboBox;
	private JTextArea courseInfoTextArea;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AddCourseFrm frame = new AddCourseFrm();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AddCourseFrm() {
		setClosable(true);
		setIconifiable(true);
		setTitle("\u6DFB\u52A0\u8BFE\u7A0B");
		setBounds(100, 100, 453, 471);
		
		JLabel label = new JLabel("\u8BFE\u7A0B\u540D\u79F0\uFF1A");
		label.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u8BFE\u7A0B.png")));
		label.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		courseNameTextField = new JTextField();
		courseNameTextField.setColumns(10);
		
		JLabel label_1 = new JLabel("\u6388\u8BFE\u8001\u5E08\uFF1A");
		label_1.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u8001\u5E08.png")));
		label_1.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		teacherListComboBox = new JComboBox();
		
		JLabel label_2 = new JLabel("\u5B66\u751F\u4EBA\u6570\uFF1A");
		label_2.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u4EBA\u6570.png")));
		label_2.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		studentNumTextField = new JTextField();
		studentNumTextField.setColumns(10);
		
		JLabel label_3 = new JLabel("\u8BFE\u7A0B\u4ECB\u7ECD\uFF1A");
		label_3.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u4ECB\u7ECD.png")));
		label_3.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		courseInfoTextArea = new JTextArea();
		
		JButton addCourseButton = new JButton("\u786E\u8BA4\u6DFB\u52A0");
		addCourseButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				addCourseAct(ae);
			}
		});
		addCourseButton.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u786E\u8BA4.png")));
		addCourseButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		JButton resetButton = new JButton("\u91CD\u7F6E\u4FE1\u606F");
		resetButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				resetValue(ae);
			}
		});
		resetButton.setIcon(new ImageIcon(AddCourseFrm.class.getResource("/images/\u91CD\u7F6E.png")));
		resetButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		GroupLayout groupLayout = new GroupLayout(getContentPane());
		groupLayout.setHorizontalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(Alignment.TRAILING, groupLayout.createSequentialGroup()
					.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
						.addGroup(groupLayout.createSequentialGroup()
							.addGap(88)
							.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_2)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(studentNumTextField, GroupLayout.DEFAULT_SIZE, 149, Short.MAX_VALUE))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_1)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(teacherListComboBox, 0, 149, Short.MAX_VALUE))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(courseNameTextField, GroupLayout.DEFAULT_SIZE, 155, Short.MAX_VALUE))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_3)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(courseInfoTextArea, GroupLayout.DEFAULT_SIZE, 149, Short.MAX_VALUE))))
						.addGroup(Alignment.TRAILING, groupLayout.createSequentialGroup()
							.addGap(103)
							.addComponent(addCourseButton)
							.addGap(18)
							.addComponent(resetButton)))
					.addGap(117))
		);
		groupLayout.setVerticalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(19)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(courseNameTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(35)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1)
						.addComponent(teacherListComboBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(37)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_2)
						.addComponent(studentNumTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(38)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_3)
						.addComponent(courseInfoTextArea, GroupLayout.PREFERRED_SIZE, 120, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED, 46, Short.MAX_VALUE)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(addCourseButton)
						.addComponent(resetButton))
					.addGap(57))
		);
		getContentPane().setLayout(groupLayout);
		setTeacherCombox();
	}

	protected void resetValue(ActionEvent ae) {
		// TODO Auto-generated method stub
		courseNameTextField.setText("");
		courseInfoTextArea.setText("");
		studentNumTextField.setText("");
		teacherListComboBox.setSelectedIndex(0);
	}

	protected void addCourseAct(ActionEvent ae) {
		// TODO Auto-generated method stub
		String couserName = courseNameTextField.getText().toString();
		String courseInfo = courseInfoTextArea.getText().toString();
		Teacher selectedTeacher = (Teacher)teacherListComboBox.getSelectedItem();
		int studentMaxNum = 0;
		try {
			studentMaxNum = Integer.parseInt(studentNumTextField.getText());
		} catch (Exception e) {
			// TODO: handle exception
			JOptionPane.showMessageDialog(this, "学生人数只能输入数字!");
			return;
		}
		if(StringUtil.isEmpty(couserName)){
			JOptionPane.showMessageDialog(this, "请输入课程名称!");
			return;
		}
		if(studentMaxNum <= 0){
			JOptionPane.showMessageDialog(this, "学生人数只能输入大于0的数字!");
			return;
		}
		Course course = new Course();
		course.setName(couserName);
		course.setMax_student_num(studentMaxNum);
		course.setInfo(courseInfo);
		course.setTeacher_id(selectedTeacher.getId());
		CourseDao courseDao = new CourseDao();
		if(courseDao.addCourse(course)){
			JOptionPane.showMessageDialog(this, "添加成功!");
		}else{
			JOptionPane.showMessageDialog(this, "添加失败!");
		}
		courseDao.closeDao();
		resetValue(ae);
	}
	private void setTeacherCombox(){
		TeacherDao teacherDao = new TeacherDao();
		List teacherList = teacherDao.getTeacherList(new Teacher());
		teacherDao.closeDao();
		for (Teacher teacher : teacherList) {
			teacherListComboBox.addItem(teacher);
		}
	}
}

 添加学生班级

package com.artisan.view;

import java.awt.EventQueue;

import javax.swing.JInternalFrame;
import javax.swing.GroupLayout;
import javax.swing.JOptionPane;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JLabel;

import java.awt.Font;

import javax.swing.ImageIcon;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JTextArea;
import javax.swing.JButton;

import com.artisan.dao.ClassDao;
import com.artisan.model.StudentClass;
import com.artisan.util.StringUtil;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class AddStudentClassFrm extends JInternalFrame {
	private JTextField classNameTextField;
	private JTextArea classInfotextArea;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AddStudentClassFrm frame = new AddStudentClassFrm();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AddStudentClassFrm() {
		setClosable(true);
		setIconifiable(true);
		setTitle("\u6DFB\u52A0\u73ED\u7EA7\u4FE1\u606F");
		setBounds(100, 100, 450, 300);
		
		JLabel label = new JLabel("\u73ED\u7EA7\u540D\u79F0\uFF1A");
		label.setIcon(new ImageIcon(AddStudentClassFrm.class.getResource("/images/\u73ED\u7EA7\u540D\u79F0.png")));
		label.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		classNameTextField = new JTextField();
		classNameTextField.setColumns(10);
		
		JLabel label_1 = new JLabel("\u73ED\u7EA7\u4FE1\u606F\uFF1A");
		label_1.setIcon(new ImageIcon(AddStudentClassFrm.class.getResource("/images/\u73ED\u7EA7\u4ECB\u7ECD.png")));
		label_1.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		classInfotextArea = new JTextArea();
		
		JButton submitButton = new JButton("\u63D0\u4EA4");
		submitButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				submitClass(ae);
			}
		});
		submitButton.setIcon(new ImageIcon(AddStudentClassFrm.class.getResource("/images/\u786E\u8BA4.png")));
		submitButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		JButton restButton = new JButton("\u91CD\u7F6E");
		restButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				resetValue(e);
			}
		});
		restButton.setIcon(new ImageIcon(AddStudentClassFrm.class.getResource("/images/\u91CD\u7F6E.png")));
		restButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		GroupLayout groupLayout = new GroupLayout(getContentPane());
		groupLayout.setHorizontalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
						.addGroup(groupLayout.createSequentialGroup()
							.addContainerGap()
							.addComponent(submitButton)
							.addGap(72)
							.addComponent(restButton))
						.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
							.addGap(73)
							.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_1)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(classInfotextArea))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(classNameTextField, GroupLayout.PREFERRED_SIZE, 173, GroupLayout.PREFERRED_SIZE)))))
					.addContainerGap(88, Short.MAX_VALUE))
		);
		groupLayout.setVerticalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(32)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(classNameTextField, GroupLayout.PREFERRED_SIZE, 32, GroupLayout.PREFERRED_SIZE))
					.addGap(39)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1)
						.addComponent(classInfotextArea, GroupLayout.PREFERRED_SIZE, 101, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED, 36, Short.MAX_VALUE)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(restButton)
						.addComponent(submitButton))
					.addGap(18))
		);
		getContentPane().setLayout(groupLayout);

	}

	protected void submitClass(ActionEvent ae) {
		// TODO Auto-generated method stub
		String className = classNameTextField.getText().toString();
		String classInfo = classInfotextArea.getText().toString();
		if(StringUtil.isEmpty(className)){
			JOptionPane.showMessageDialog(this, "班级名称不能为空！");
			return;
		}
		StudentClass scl = new StudentClass();
		scl.setName(className);
		scl.setInfo(classInfo);
		ClassDao classDao = new ClassDao();
		if(classDao.addClass(scl)){
			JOptionPane.showMessageDialog(this, "班级添加成功！");
		}else{
			JOptionPane.showMessageDialog(this, "班级添加失败！");
		}
		classDao.closeDao();
		resetValue(ae);
	}

	protected void resetValue(ActionEvent e) {
		// TODO Auto-generated method stub
		classNameTextField.setText("");
		classInfotextArea.setText("");
	}
}

添加学生信息

package com.artisan.view;

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;

import javax.swing.ButtonGroup;
import javax.swing.DefaultComboBoxModel;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;

import com.artisan.dao.ClassDao;
import com.artisan.dao.StudentDao;
import com.artisan.model.Student;
import com.artisan.model.StudentClass;
import com.artisan.util.StringUtil;

public class AddStudentFrm extends JInternalFrame {
	private JTextField studentNameTextField;
	private JPasswordField studentPasswordField;
	private JComboBox studentClassComboBox;
	private ButtonGroup sexButtonGroup;
	private JRadioButton studentSexManRadioButton;
	private JRadioButton studentSexFemalRadioButton;
	private JRadioButton studentSexUnkonwRadioButton;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AddStudentFrm frame = new AddStudentFrm();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AddStudentFrm() {
		setClosable(true);
		setIconifiable(true);
		setTitle("\u6DFB\u52A0\u5B66\u751F");
		setBounds(100, 100, 450, 300);
		
		JLabel label = new JLabel("\u5B66\u751F\u59D3\u540D\uFF1A");
		label.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/\u5B66\u751F\u7BA1\u7406.png")));
		label.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		studentNameTextField = new JTextField();
		studentNameTextField.setColumns(10);
		
		JLabel label_1 = new JLabel("\u6240\u5C5E\u73ED\u7EA7\uFF1A");
		label_1.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/\u73ED\u7EA7\u540D\u79F0.png")));
		label_1.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		studentClassComboBox = new JComboBox();
		studentClassComboBox.setModel(new DefaultComboBoxModel(new String[] {}));
		
		JLabel label_2 = new JLabel("\u767B\u5F55\u5BC6\u7801\uFF1A");
		label_2.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/password.png")));
		label_2.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		studentPasswordField = new JPasswordField();
		
		JLabel label_3 = new JLabel("\u5B66\u751F\u6027\u522B\uFF1A");
		label_3.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/\u6027\u522B.png")));
		label_3.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		studentSexManRadioButton = new JRadioButton("\u7537");
		studentSexManRadioButton.setSelected(true);
		
		studentSexFemalRadioButton = new JRadioButton("\u5973");
		
		studentSexUnkonwRadioButton = new JRadioButton("\u4FDD\u5BC6");
		
		sexButtonGroup = new ButtonGroup();
		sexButtonGroup.add(studentSexManRadioButton);
		sexButtonGroup.add(studentSexFemalRadioButton);
		sexButtonGroup.add(studentSexUnkonwRadioButton);
		
		JButton submitButton = new JButton("\u786E\u8BA4");
		submitButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				studentAddAct(ae);
			}
		});
		submitButton.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/\u786E\u8BA4.png")));
		submitButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		JButton resetButton = new JButton("\u91CD\u7F6E");
		resetButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				resetValue(ae);
			}
		});
		resetButton.setIcon(new ImageIcon(AddStudentFrm.class.getResource("/images/\u91CD\u7F6E.png")));
		resetButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		GroupLayout groupLayout = new GroupLayout(getContentPane());
		groupLayout.setHorizontalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(91)
					.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
						.addGroup(groupLayout.createSequentialGroup()
							.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_2)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(studentPasswordField, GroupLayout.DEFAULT_SIZE, 151, Short.MAX_VALUE))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_1)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(studentClassComboBox, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(studentNameTextField, GroupLayout.PREFERRED_SIZE, 151, GroupLayout.PREFERRED_SIZE)))
							.addGap(92))
						.addGroup(groupLayout.createSequentialGroup()
							.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
								.addComponent(resetButton)
								.addGroup(groupLayout.createSequentialGroup()
									.addComponent(label_3)
									.addPreferredGap(ComponentPlacement.UNRELATED)
									.addComponent(studentSexManRadioButton)
									.addGap(10)
									.addComponent(studentSexFemalRadioButton)
									.addGap(10)
									.addComponent(studentSexUnkonwRadioButton)))
							.addContainerGap())))
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(132)
					.addComponent(submitButton)
					.addContainerGap(221, Short.MAX_VALUE))
		);
		groupLayout.setVerticalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(30)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(studentNameTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(26)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1)
						.addComponent(studentClassComboBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(32)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_2)
						.addComponent(studentPasswordField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(29)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_3)
						.addComponent(studentSexManRadioButton)
						.addComponent(studentSexUnkonwRadioButton)
						.addComponent(studentSexFemalRadioButton))
					.addPreferredGap(ComponentPlacement.RELATED, 30, Short.MAX_VALUE)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(submitButton)
						.addComponent(resetButton))
					.addContainerGap())
		);
		getContentPane().setLayout(groupLayout);
		setStudentClassInfo();
	}

	protected void resetValue(ActionEvent ae) {
		// TODO Auto-generated method stub
		studentNameTextField.setText("");
		studentPasswordField.setText("");
		studentClassComboBox.setSelectedIndex(0);
		sexButtonGroup.clearSelection();
		studentSexManRadioButton.setSelected(true);
	}

	protected void studentAddAct(ActionEvent ae) {
		// TODO Auto-generated method stub
		String studentName = studentNameTextField.getText().toString();
		String studentPassword = studentPasswordField.getText().toString();
		if(StringUtil.isEmpty(studentName)){
			JOptionPane.showMessageDialog(this, "请填写学生姓名!");
			return;
		}
		if(StringUtil.isEmpty(studentPassword)){
			JOptionPane.showMessageDialog(this, "请填写密码!");
			return;
		}
		StudentClass sc = (StudentClass)studentClassComboBox.getSelectedItem();
		String sex = studentSexManRadioButton.isSelected() ? studentSexManRadioButton.getText() : (studentSexFemalRadioButton.isSelected() ? studentSexFemalRadioButton.getText() : studentSexUnkonwRadioButton.getText());
		Student student = new Student();
		student.setName(studentName);
		student.setClassId(sc.getId());
		student.setPassword(studentPassword);
		student.setSex(sex);
		StudentDao studentDao = new StudentDao();
		if(studentDao.addStudent(student)){
			JOptionPane.showMessageDialog(this, "添加成功!");
		}else{
			JOptionPane.showMessageDialog(this, "添加失败!");
		}
		resetValue(ae);
	}
	
	private void setStudentClassInfo(){
		ClassDao classDao = new ClassDao();
		List classList = classDao.getClassList(new StudentClass());
		for (StudentClass sc : classList) {
			studentClassComboBox.addItem(sc);
		}
		classDao.closeDao();
	}
}

 添加老师信息

package com.artisan.view;

import java.awt.EventQueue;

import javax.swing.ButtonGroup;
import javax.swing.JInternalFrame;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;

import java.awt.Font;

import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JRadioButton;
import javax.swing.JButton;

import com.artisan.dao.TeacherDao;
import com.artisan.model.Teacher;
import com.artisan.util.StringUtil;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JPasswordField;

public class AddTeacherFrm extends JInternalFrame {
	private JTextField teacherNameTextField;
	private JTextField teacherTitleTextField;
	private JTextField teacherAgeTextField;
	private JRadioButton teacherSexManRadioButton;
	private JRadioButton teacherSexFemalRadioButton;
	private JPasswordField teacherPasswordField;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AddTeacherFrm frame = new AddTeacherFrm();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AddTeacherFrm() {
		setClosable(true);
		setIconifiable(true);
		setTitle("\u6DFB\u52A0\u6559\u5E08");
		setBounds(100, 100, 450, 371);
		
		JLabel label = new JLabel("\u6559\u5E08\u59D3\u540D\uFF1A");
		label.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		label.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u8001\u5E08.png")));
		
		teacherNameTextField = new JTextField();
		teacherNameTextField.setColumns(10);
		
		JLabel label_1 = new JLabel("\u6559\u5E08\u6027\u522B\uFF1A");
		label_1.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u6027\u522B.png")));
		label_1.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		ButtonGroup buttonGroup = new ButtonGroup();
		teacherSexManRadioButton = new JRadioButton("\u7537");
		teacherSexManRadioButton.setSelected(true);
		teacherSexManRadioButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		teacherSexFemalRadioButton = new JRadioButton("\u5973");
		teacherSexFemalRadioButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		buttonGroup.add(teacherSexManRadioButton);
		buttonGroup.add(teacherSexFemalRadioButton);
		
		JLabel label_2 = new JLabel("\u6559\u5E08\u804C\u79F0\uFF1A");
		label_2.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u804C\u79F0\u8BC4\u5B9A.png")));
		label_2.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		teacherTitleTextField = new JTextField();
		teacherTitleTextField.setColumns(10);
		
		JLabel label_3 = new JLabel("\u6559\u5E08\u5E74\u9F84\uFF1A");
		label_3.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u5E74\u9F84.png")));
		label_3.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		teacherAgeTextField = new JTextField();
		teacherAgeTextField.setColumns(10);
		
		JButton submitButton = new JButton("\u786E\u8BA4\u6DFB\u52A0");
		submitButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				addTeacherAct(ae);
			}
		});
		submitButton.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u786E\u8BA4.png")));
		submitButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		JButton resetButton = new JButton("\u91CD\u7F6E\u8868\u5355");
		resetButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				resetValue(ae);
			}
		});
		resetButton.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u91CD\u7F6E.png")));
		resetButton.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		JLabel label_4 = new JLabel("\u767B\u5F55\u5BC6\u7801\uFF1A");
		label_4.setIcon(new ImageIcon(AddTeacherFrm.class.getResource("/images/\u5BC6\u7801.png")));
		label_4.setFont(new Font("微软雅黑", Font.PLAIN, 14));
		
		teacherPasswordField = new JPasswordField();
		GroupLayout groupLayout = new GroupLayout(getContentPane());
		groupLayout.setHorizontalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(104)
					.addComponent(submitButton)
					.addGap(40)
					.addComponent(resetButton)
					.addContainerGap(68, Short.MAX_VALUE))
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(87)
					.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
						.addGroup(groupLayout.createSequentialGroup()
							.addComponent(label_1)
							.addPreferredGap(ComponentPlacement.UNRELATED)
							.addComponent(teacherSexManRadioButton)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(teacherSexFemalRadioButton))
						.addGroup(groupLayout.createSequentialGroup()
							.addComponent(label)
							.addPreferredGap(ComponentPlacement.UNRELATED)
							.addComponent(teacherNameTextField, GroupLayout.PREFERRED_SIZE, 152, GroupLayout.PREFERRED_SIZE))
						.addGroup(groupLayout.createSequentialGroup()
							.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
								.addComponent(label_2)
								.addComponent(label_3)
								.addComponent(label_4))
							.addPreferredGap(ComponentPlacement.UNRELATED)
							.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
								.addComponent(teacherPasswordField, GroupLayout.DEFAULT_SIZE, 152, Short.MAX_VALUE)
								.addComponent(teacherAgeTextField, GroupLayout.DEFAULT_SIZE, 152, Short.MAX_VALUE)
								.addComponent(teacherTitleTextField, 152, 152, Short.MAX_VALUE))))
					.addGap(95))
		);
		groupLayout.setVerticalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(26)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(teacherNameTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1)
						.addComponent(teacherSexManRadioButton)
						.addComponent(teacherSexFemalRadioButton))
					.addGap(18)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_2)
						.addComponent(teacherTitleTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(27)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_3)
						.addComponent(teacherAgeTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(30)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_4)
						.addComponent(teacherPasswordField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED, 52, Short.MAX_VALUE)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(submitButton)
						.addComponent(resetButton))
					.addGap(32))
		);
		getContentPane().setLayout(groupLayout);

	}

	protected void resetValue(ActionEvent ae) {
		// TODO Auto-generated method stub
		teacherNameTextField.setText("");
		teacherTitleTextField.setText("");
		teacherAgeTextField.setText("");
		teacherSexManRadioButton.setSelected(true);
		teacherPasswordField.setText("");
	}

	protected void addTeacherAct(ActionEvent ae) {
		// TODO Auto-generated method stub
		String teacherName = teacherNameTextField.getText().toString();
		String teacherSex = teacherSexManRadioButton.isSelected() ? teacherSexManRadioButton.getText().toString() : teacherSexFemalRadioButton.getText().toString();
		String teacherTitle = teacherTitleTextField.getText().toString();
		String teacherPassword = teacherPasswordField.getText().toString();
		int teacherAge = 0;
		try {
			teacherAge = Integer.parseInt(teacherAgeTextField.getText().toString());
		} catch (Exception e) {
			// TODO: handle exception
			JOptionPane.showMessageDialog(this, "年龄只允许输入数字！");
			return;
		}
		if(StringUtil.isEmpty(teacherName)){
			JOptionPane.showMessageDialog(this, "教师姓名必须填写！");
			return;
		}
		if(StringUtil.isEmpty(teacherTitle)){
			JOptionPane.showMessageDialog(this, "教师职称必须填写！");
			return;
		}
		if(teacherAge == 0 || teacherAge < 0){
			JOptionPane.showMessageDialog(this, "教师年龄必须大于0！");
			return;
		}
		if(StringUtil.isEmpty(teacherPassword)){
			JOptionPane.showMessageDialog(this, "教师登录密码必须填写！");
			return;
		}
		Teacher teacher = new Teacher();
		teacher.setName(teacherName);
		teacher.setSex(teacherSex);
		teacher.setTitle(teacherTitle);
		teacher.setAge(teacherAge);
		teacher.setPassword(teacherPassword);
		TeacherDao teacherDao = new TeacherDao();
		if(teacherDao.addTeacher(teacher)){
			JOptionPane.showMessageDialog(this, "教师添加成功！");
		}else{
			JOptionPane.showMessageDialog(this, "教师添加失败！");
		}
		resetValue(ae);
	}
}

写不下啦，见下一篇哦~~