xueshenglixiaobean.java

JSP开发的学生信息管理系统

package xuesheng;
import conn.DataBaseConnection;
import java.sql.Date;
import java.sql.*;
import java.util.*;
import java.io.*;
public class XueshengLixiaoBean
{
	private Connection con=null;
	public XueshengLixiaoBean()
	{
		this.con=DataBaseConnection.getConnection();
	}
	//入录退学的学生
	public String addexitXuesheng(XueshengLixiao xueshengLixiao)
	{
		PreparedStatement pstmt=null;
		String str="";
		try
		{
			pstmt=con.prepareStatement("insert into XueshengLixiao values(?,?,?,?,?)");
			pstmt.setString(1,xueshengLixiao.getStudentId());
			pstmt.setString(2,xueshengLixiao.getLeaveTime());
			pstmt.setString(3,xueshengLixiao.getLeaveReason());
			pstmt.setString(4,xueshengLixiao.getRemark());
			pstmt.setString(5,"3");
			
			pstmt.execute();
			str="sucess";
		}catch(SQLException ex)
  	    	{
  	    		System.err.println(ex.getMessage());
  	    		str="failer";
  	    	}
  	    	finally
  	    	{
  	    		try{	
  	    		 if(pstmt!=null){
  	    				pstmt.close();
  	    			}	
	  	    		 if(con!=null){
	  	    		 	con.close();
	  	    		 }
  	    		}catch(Exception e)
  	    		{
  	    			e.printStackTrace();
  	    		}
  	    	
  	    	}
  	    return str;	
	}
	//入录休学的学生
	public String addrestXuesheng(XueshengLixiao xueshengLixiao)
	{
		PreparedStatement pstmt=null;
		String str="";
		try
		{
			pstmt=con.prepareStatement("insert into XueshengLixiao values(?,?,?,?,?)");
			pstmt.setString(1,xueshengLixiao.getStudentId());
			pstmt.setString(2,xueshengLixiao.getLeaveTime());
			pstmt.setString(3,xueshengLixiao.getLeaveReason());
			pstmt.setString(4,xueshengLixiao.getRemark());
			pstmt.setString(5,"2");
			
			pstmt.execute();
			str="sucess";
		}catch(SQLException ex)
  	    	{
  	    		System.err.println(ex.getMessage());
  	    		str="failer";
  	    	}
  	    	finally
  	    	{
  	    		try{	
  	    		 if(pstmt!=null){
  	    				pstmt.close();
  	    			}	
	  	    		 if(con!=null){
	  	    		 	con.close();
	  	    		 }
  	    		}catch(Exception e)
  	    		{
  	    			e.printStackTrace();
  	    		}
  	    	
  	    	}
  	    return str;	
	}
	//入录复学的学生
	public String addbackXuesheng(XueshengLixiao xueshengLixiao)
	{
		PreparedStatement pstmt=null;
		String str="";
		try
		{
			pstmt=con.prepareStatement("insert into XueshengLixiao values(?,?,?,?,?)");
			pstmt.setString(1,xueshengLixiao.getStudentId());
			pstmt.setString(2,xueshengLixiao.getLeaveTime());
			pstmt.setString(3,xueshengLixiao.getLeaveReason());
			pstmt.setString(4,xueshengLixiao.getRemark());
			pstmt.setString(5,"1");
			
			pstmt.execute();
			str="sucess";
		}catch(SQLException ex)
  	    	{
  	    		System.err.println(ex.getMessage());
  	    		str="failer";
  	    	}
  	    	finally
  	    	{
  	    		try{	
  	    		 if(pstmt!=null){
  	    				pstmt.close();
  	    			}	
	  	    		 if(con!=null){
	  	    		 	con.close();
	  	    		 }
  	    		}catch(Exception e)
  	    		{
  	    			e.printStackTrace();
  	    		}
  	    	
  	    	}
  	    return str;	
	}
	//查询
	public ResultSet executeQuery(String sql)
  	{
  	     Statement stmt=null;
  	     ResultSet rst=null;
  	     try{
	  	      stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
	  	      rst=stmt.executeQuery(sql);
  	    	}catch(SQLException ex)
  	    	{
  	    		System.err.println(ex.getMessage());
  	    	}
  	    	return rst;
  	 }
  	 //关闭
  	 public void close() 
        {
        	try{
        		if(con!=null){
        			con.close();
        		}
        		
        	}
        	catch(SQLException e)
        	{
        	   e.printStackTrace();	
        	}
        	
        } 
}