teacher_manager.java

本系统实现的是一个信息发布平台

/*
 * 创建日期 2005-8-26
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package cn.edu.bit.business;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;

import cn.edu.bit.DBQuery.DataProcess;
import cn.edu.bit.Object.Teacher;

/**
 * @author ligang
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
public class Teacher_Manager {

	public static void Add_Teacher(String name,String sex,
			String zhicheng,String image,String info)
	{
		String xingbie="";
		
		if(sex.equals("male"))
		{	
			xingbie="男";
		}
		else
		{
			xingbie="女";
		}
		
		
		try
		{
			name=new String(name.getBytes("ISO8859_1"));
		
			
			
			zhicheng=new String(zhicheng.getBytes("ISO8859_1"));
			
			image=new String(image.getBytes("ISO8859_1"));
			
			info=new String(info.getBytes("ISO8859_1"));
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		
		String query = "insert into teacher(name,sex,zhicheng,image,info)values('"+name+
						"','"+xingbie+"','"+zhicheng+"','"+image+"','"+info+"')";
		
		try
		{
			DataProcess.ExeQuery(query);
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
	
	
	public static void Edit_Teacher(String name,String sex,
			String zhicheng,String image,String info,int id)
	{
		
		String xingbie="";
		
		if(sex.equals("male"))
		{	
			xingbie="男";
		}
		else
		{
			xingbie="女";
		}
		
		
		try
		{
			name=new String(name.getBytes("ISO8859_1"));
			
			zhicheng=new String(zhicheng.getBytes("ISO8859_1"));
			
			image=new String(image.getBytes("ISO8859_1"));
			
			info=new String(info.getBytes("ISO8859_1"));
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		
		String query = "update teacher set name='"+name+"',sex='"+xingbie+
						"',zhicheng='"+zhicheng+"',image='"+image+"',info='"+info+
						"' where id="+id;
		
		try
		{
			DataProcess.ExeQuery(query);
		}
		catch(Exception e){
			e.printStackTrace();
		}
		
	}
	
	
	public static void Delete_Teacher(int id)
	{
		String deleteStr = "delete from teacher where id="+id;
		
		try
		{
			DataProcess.ExeQuery(deleteStr);
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
	
	public static Teacher getTeacher(int ID)
	{
		String selectStr = "select * from teacher where id="+ID;
		
		Connection con = DataProcess.getConnection();
		
		Teacher teacher = Teacher.getInstance();
		
		try{
			
			Statement stmt = con.createStatement();
			
			ResultSet rs = stmt.executeQuery(selectStr);
			
			if(rs.next())
			{				
				String name = rs.getString("name");
				
				String sex = rs.getString("sex");
				
				String zhicheng = rs.getString("zhicheng");
				
				String image = rs.getString("image");
				
				String info = rs.getString("info");
				
				teacher.setId(ID);
				
				teacher.setName(name);
				
				teacher.setSex(sex);
				
				teacher.setZhicheng(zhicheng);
				
				teacher.setImage(image);
				
				teacher.setInfo(info);
			}
			
			rs.close();
			
			stmt.close();
			
			con.close();
			
			return teacher;
		
		}
		catch(Exception e)
		{
			e.printStackTrace();
			
			return null;
		}
	}
	
	public static ArrayList getTeacherList()
	{
		String query = "select * from teacher";
		
		Connection con = DataProcess.getConnection();
		
		ArrayList tl = new ArrayList();
		
		try{
			
			Statement stmt = con.createStatement();
			
			ResultSet rs = stmt.executeQuery(query);
			
			while(rs.next())
			{				
				int ID = rs.getInt("id");
				
				String name = rs.getString("name");
				
				String sex = rs.getString("sex");
				
				String zhicheng = rs.getString("zhicheng");
				
				String image = rs.getString("image");
				
				String info = rs.getString("info");
				
				Teacher teacher = Teacher.getInstance();
				
				teacher.setId(ID);
				
				teacher.setName(name);
				
				teacher.setSex(sex);
				
				teacher.setZhicheng(zhicheng);
				
				teacher.setImage(image);
				
				teacher.setInfo(info);
				
				tl.add(teacher);
			}
			
			rs.close();
			
			stmt.close();
			
			con.close();
			
			return tl;
		
		}
		catch(Exception e)
		{
			e.printStackTrace();
			
			return null;
		}
		
	}
}