xueshengchongxiubean.java

JSP开发的学生信息管理系统

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   XueshengChongxiuBean.java

package mypackage;

import java.io.PrintStream;
import java.sql.*;

// Referenced classes of package mypackage:
//			DataBaseConnection, XueshengChongxiu

public class XueshengChongxiuBean
{

	private Connection con;

	public XueshengChongxiuBean()
	{
		con = null;
		con = DataBaseConnection.getConnection();
	}

	public boolean existXueshengChongxiu(XueshengChongxiu xueshengchongxiu)
	{
		ResultSet resultset;
		String s = xueshengchongxiu.getStudentId();
		String s1 = xueshengchongxiu.getCourseId();
		String s2 = xueshengchongxiu.getRemedyTime();
		PreparedStatement preparedstatement = con.prepareStatement("select * from xueshengChongxiu where studentId='" + s + "' and courseId='" + s1 + "' and remedyTime='" + s2 + "'");
		resultset = preparedstatement.executeQuery();
		Exception exception;
		return resultset.next();
		exception;
		return false;
	}

	public String addXueshengChongxiu(XueshengChongxiu xueshengchongxiu)
	{
		PreparedStatement preparedstatement;
		preparedstatement = null;
		String s = "";
		String s2;
		if (!existXueshengChongxiu(xueshengchongxiu))
			break MISSING_BLOCK_LABEL_23;
		s2 = "exist";
		return s2;
		String s1;
		try
		{
			preparedstatement = con.prepareStatement("insert into xueshengChongxiu values(?,?,?,?)");
			preparedstatement.setString(1, xueshengchongxiu.getStudentId());
			preparedstatement.setString(2, xueshengchongxiu.getCourseId());
			preparedstatement.setString(3, xueshengchongxiu.getRemedyTime());
			preparedstatement.setInt(4, xueshengchongxiu.getGread());
			preparedstatement.execute();
			s1 = "sucess";
		}
		catch (SQLException sqlexception)
		{
			System.err.println(sqlexception.getMessage());
			s1 = "failer";
		}
		break MISSING_BLOCK_LABEL_154;
		local;
		try
		{
			preparedstatement.close();
			con.close();
		}
		catch (Exception exception1)
		{
			exception1.printStackTrace();
		}
		JVM INSTR ret 6;
		return s1;
	}

	public String updateXueshengChongxiu(XueshengChongxiu xueshengchongxiu)
	{
		PreparedStatement preparedstatement = null;
		String s = "";
		try
		{
			preparedstatement = con.prepareStatement("update xueshengChongxiu set gread=? where studentId=? and courseId=? and remedyTime=?");
			preparedstatement.setInt(1, xueshengchongxiu.getGread());
			preparedstatement.setString(2, xueshengchongxiu.getStudentId());
			preparedstatement.setString(3, xueshengchongxiu.getCourseId());
			preparedstatement.setString(4, xueshengchongxiu.getRemedyTime());
			preparedstatement.execute();
			s = "sucess";
		}
		catch (SQLException sqlexception)
		{
			System.err.println(sqlexception.getMessage());
			s = "failer";
		}
		finally
		{
			try
			{
				preparedstatement.close();
				con.close();
			}
			catch (Exception exception1)
			{
				exception1.printStackTrace();
			}
		}
		return s;
	}

	public String deleteXueshengChongxiu(String s, String s1, String s2)
	{
		PreparedStatement preparedstatement = null;
		String s3 = "";
		try
		{
			preparedstatement = con.prepareStatement("delete from xueshengChongxiu where studentId=? and courseId=? and remedyTime=?");
			preparedstatement.setString(1, s);
			preparedstatement.setString(2, s1);
			preparedstatement.setString(3, s2);
			preparedstatement.execute();
			s3 = "sucess";
		}
		catch (SQLException sqlexception)
		{
			System.err.println(sqlexception.getMessage());
			s3 = "failer";
		}
		finally
		{
			try
			{
				preparedstatement.close();
				con.close();
			}
			catch (Exception exception1)
			{
				exception1.printStackTrace();
			}
		}
		return s3;
	}

	public ResultSet executeQuery(String s)
	{
		Object obj = null;
		ResultSet resultset = null;
		try
		{
			Statement statement = con.createStatement(1005, 1008);
			resultset = statement.executeQuery(s);
		}
		catch (SQLException sqlexception)
		{
			System.err.println(sqlexception.getMessage());
		}
		return resultset;
	}

	public void close()
	{
		try
		{
			con.close();
		}
		catch (SQLException sqlexception)
		{
			sqlexception.printStackTrace();
		}
	}

	public String getAllClass()
	{
		Object obj = null;
		Object obj1 = null;
		StringBuffer stringbuffer = new StringBuffer();
		try
		{
			Statement statement = con.createStatement(1005, 1008);
			String s;
			for (ResultSet resultset = statement.executeQuery("select distinct className from banji"); resultset.next(); stringbuffer.append("<option value='" + s + "'>" + s + "</option>\n"))
				s = resultset.getString("className");

		}
		catch (SQLException sqlexception)
		{
			return "";
		}
		return stringbuffer.toString();
	}

	public String getAllCourse()
	{
		Object obj = null;
		Object obj1 = null;
		StringBuffer stringbuffer = new StringBuffer();
		try
		{
			Statement statement = con.createStatement(1005, 1008);
			String s;
			String s1;
			for (ResultSet resultset = statement.executeQuery("select courseId,courseName from kecheng"); resultset.next(); stringbuffer.append("<option value='" + s + "'>" + s1 + "</option>\n"))
			{
				s = resultset.getString("courseId");
				s1 = resultset.getString("courseName");
			}

		}
		catch (SQLException sqlexception)
		{
			sqlexception.printStackTrace();
			return "";
		}
		return stringbuffer.toString();
	}
}