coursedao.java

功能还没做全的选课系统

package com.xuanke.student.model;

import java.sql.*;
import java.util.ArrayList;
import java.util.List;

import com.xuanke.utils.JDBCBase;
import com.xuanke.utils.MyJDBCException;

public class CourseDAO extends JDBCBase {

	public CourseDAO(Connection conn) {
		super(conn);
	}

	public void add(String id) throws MyJDBCException {
		
		String sql = "insert into PersonCourse(CourseID) values("+id+ ")";
		this.execute(sql);
	}

	public void delete(String id) throws MyJDBCException {
		
		String sql = "delete from  PersonCourse where CourseID="+id+ "";
		System.out.println(sql);
		this.execute(sql);
	}

	public void modify(CoursetBean stu) throws MyJDBCException {
		
		
		//this.execute(sql);

	}

	public List findAll() throws MyJDBCException {
		
		String sql = "select * from Course";
		List result = null;
		ResultSet rs = this.qry(sql);
		result = new ArrayList();
		try {
			while (rs.next()) {
				// 数据库中每行转换为一个StudentBean对象，并把这些对象装入一个List中后返回
				CoursetBean stu = new CoursetBean();
				stu.setId(rs.getString(1));
				stu.setName(rs.getString(2));
				stu.setDate(rs.getString(3));
				stu.setXuefen(rs.getInt(4));
				result.add(stu);
			}
			rs.getStatement().close();
		} catch (SQLException ex) {

		}

		return result;

	}
	
	public List findPersonalAll() throws MyJDBCException {
	
		String sql = "select Course.CourseID,Course.CourseName,Course.CourseTime,Course.CourseXuefen from Course,PersonCourse where Course.CourseID=PersonCourse.CourseID";
		//String sql = "select * from Course";
		List result = null;
		ResultSet rs = this.qry(sql);
		result = new ArrayList();
		try {
			while (rs.next()) {
				// 数据库中每行转换为一个StudentBean对象，并把这些对象装入一个List中后返回
				CoursetBean stu = new CoursetBean();
				stu.setId(rs.getString(1));
				stu.setName(rs.getString(2));
				stu.setDate(rs.getString(3));
				stu.setXuefen(rs.getInt(4));
				result.add(stu);
			}
			rs.getStatement().close();
		} catch (SQLException ex) {

		}

		return result;

	}

}