scores.java

基于java的jsp开发的在线考试系统 基于java的jsp开发的在线考试系统

package javaBeanClass.Scores;
import javaBeanClass.Tools;
import javaBeanClass.DatabaseConn;
import javaBeanClass.Scores.ScoresData;
import java.util.*;
import java.sql.*;
public class Scores
{
	private DatabaseConn db;
	
	private int pageNumber=1;//要显示的页码数，默认为1
	private int totalPage;//总页数
	
	private int ID;
	private String Names;//Name是Java的关键字，开始用Name做变量名，一直出错，后改为Names正常
	private String SN;
	private float Scores;
	private String Project_CN;
	private String TestIndexMemo;
	private String ClassNumber;
	
	//搜索用变量
	private int ClassID;
	private int TestTypeID;
	private float minScores=-1.0f;//成绩下限
	private float maxScores=-1.0f;//成绩上限
	
	private String sql;
	
	public void setPageNumber(int pageNumber){this.pageNumber=pageNumber;}
	public int getPageNumber(){return this.pageNumber;}
	public void setTotalPage(int totalPage){this.totalPage=totalPage;}
	public int getTotalPage(){return this.totalPage;}
	
	public void setID(int ID){this.ID=ID;}
	public int getID(){return this.ID;}
	public void setNames(String Names)throws SQLException
	{try{this.Names=new String(Names.getBytes("8859_1"),"GB2312");}catch(Exception e){throw new SQLException("编码失败!");}}
	public String getNames(){return this.Names;}
	public void setSN(String SN){this.SN=SN;}
	public String getSN(){return this.SN;}
	public void setScores(float Scores){this.Scores=Scores;}
	public float getScores(){return this.Scores;}
	public void setProject_CN(String Project_CN){this.Project_CN=Project_CN;}
	public String getProject_CN(){return this.Project_CN;}
	public void setTestIndexMemo(String TestIndexMemo){this.TestIndexMemo=TestIndexMemo;}
	public String getTestIndexMemo(){return this.TestIndexMemo;}
	public void setClassNumber(String ClassNumber){this.ClassNumber=ClassNumber;}
	public String getClassNumber(){return this.ClassNumber;}
	
	public void setClassID(int ClassID){this.ClassID=ClassID;}
	public int getClassID(){return this.ClassID;}
	public void setTestTypeID(int TestTypeID){this.TestTypeID=TestTypeID;}
	public int getTestTypeID(){return this.TestTypeID;}
	
	public void setMinScores(float minScores){this.minScores=minScores;}
	public void setMaxScores(float maxScores){this.maxScores=maxScores;}
	
	public Scores(){db=new DatabaseConn();}
	
	public ScoresData findByPrimaryKey()throws SQLException
	{
		sql="select * from View_Scores where ID=?";
		Connection con;
		PreparedStatement ps=null;
		ResultSet rs=null;
		try{con=db.connectToDB();}
		catch(Exception ex){throw new SQLException("Connect database failed!");}
		try
		{
			ps=con.prepareStatement(sql);
			ps.setInt(1,ID);
			rs=ps.executeQuery();
			if(rs.next())
			{return new ScoresData(rs.getInt(1),rs.getString(2),rs.getString(3),rs.getFloat(4),rs.getString(5),rs.getString(6),rs.getString(7));}
		}
		catch(Exception ex)
		{
			System.out.println("FindByPrimaryKey Scores failed:"+ex.getMessage());
			throw new SQLException("FindByPrimaryKey Scores failed!");
		}
		finally
		{
			try{con.close();ps.close();}
			catch(SQLException sqlex){System.out.println("FindByPrimaryKey Close Scores Error:"+sqlex.getMessage());}
		}
		return null;
	}
	
	public Vector findAll(int pageSizes)throws SQLException
	{
		String tableName="View_Scores";
		String whereStr="where 1=1"+
						(this.TestTypeID==0?"":" And TestTypeID="+this.TestTypeID)+
						(this.ClassID==0?"":" And ClassID="+this.ClassID)+
						(this.SN==null?"":" And SN like '%"+Tools.replace(this.SN,"'","''")+"%'")+
						(this.minScores==-1.0?"":" And Scores>="+this.minScores)+
						(this.maxScores==-1.0?"":" And Scores<="+this.maxScores)+
						(this.Names==null?"":" And Names like '%"+Tools.replace(this.Names,"'","''")+"%'");
		String orderByStr="order by TestTypeID,ClassID,SN,Scores,Names";
		System.out.println(whereStr);
		
		Vector vResults=new Vector(1,1);
		boolean bResult=false;
		//sql="select * from Scores where Del='0'";
		Connection con;
		CallableStatement ps=null;
		ResultSet rs=null;
		try{con=db.connectToDB();}
		catch(Exception ex){throw new SQLException("Connect database failed!");}
		try
		{
			ps=con.prepareCall("{call pr_splitPage(?,?,?,?,?)}");
			ps.registerOutParameter(1,java.sql.Types.INTEGER);
			ps.setString(2,tableName);
			ps.setInt(3,88888888);//用于返回总页数
			ps.setInt(4,pageSizes);
			ps.setString(5,whereStr);
			ps.executeUpdate();//首先返回总页数,存储过程不能即返回总页数又返回记录集，具体用法还要再研究
			this.totalPage=ps.getInt(1);
						
			ps=con.prepareCall("{call pr_splitPage(?,?,?,?,?,?)}");
			ps.registerOutParameter(1,java.sql.Types.INTEGER);//用于返回记录集，此参数可不带
			ps.setString(2,tableName);
			ps.setInt(3,pageNumber);
			ps.setInt(4,pageSizes);
			ps.setString(5,whereStr);
			ps.setString(6,orderByStr);
			
			rs=ps.executeQuery();
			bResult=rs.next();
			if(bResult)
			{
				do
				{
					vResults.add(new ScoresData(rs.getInt(1),rs.getString(2),rs.getString(3),rs.getFloat(4),rs.getString(5),rs.getString(6),rs.getString(7)));
				}while(rs.next());
			}
		}
		catch(Exception ex)
		{
			System.out.println("FindAll Scores failed:"+ex.getMessage());
			throw new SQLException("FindAll Scores failed!");
		}
		finally
		{
			try{con.close();ps.close();}
			catch(SQLException sqlex){System.out.println("FindAll Close Scores Error:"+sqlex.getMessage());}
		}
		if(bResult)
		{return vResults;}
		else
		{return null;}
	}
}