conn.java

使用java弄的,实现铁路售票的各种功能,供大家学习使用

package Java;
import java.sql.*;
import java.util.Vector;
import com.mysql.jdbc.Driver;

public class Conn {

	private Connection con;
	private PreparedStatement ps;
	private ResultSet rs;
	private CallableStatement cs;
	private SaleTrainTicket stt = new SaleTrainTicket();
	
    public Conn() {
    	try{
    		Class.forName("com.mysql.jdbc.Driver");
    		con = DriverManager.getConnection("jdbc:mysql://localhost:3306/trainticket","root","123456");
		}catch(SQLException e){
    		System.out.println (e.getMessage());
    	}catch(ClassNotFoundException e1){
    		System.out.println (e1.getMessage());
    	}
    }
    
    public boolean  Login(String username,String userpassword)
	{
		boolean b = false;
		String sql = "select * from user where username=? and userpassword=?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,username);
			ps.setString(2,userpassword);
			rs = ps.executeQuery();
			if(rs.next())
			{
				b = true;
			}else{
				b = false;
			}
		  }catch(SQLException e){
			System.out.println (e.getMessage());
		}
		return b;
	}
	
	public boolean ifadmin(String username,String userpassword,String userpopedom)
	{
		boolean b = false;
		String popedom = null;
		String sql = "select * from user where username = ? and userpassword = ?" ;
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,username);
			ps.setString(2,userpassword);
			rs = ps.executeQuery();
			if(rs.next())
			{	
				popedom = rs.getString("userpopedom");
				if(popedom.equals(userpopedom))
				{b = true;}
				else
				{b = false;}	
				}
				else
					b = false;
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return b;
	}
	public String gettrainno(String trainno){
		String tno = trainno;
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				tno = rs.getString("trainno");
			}else{
				tno = null;
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return tno;
	}
	
	public String gettiketno(String trainno){
		String ticketno = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				ticketno = rs.getString("ticketno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return ticketno;
	}
	public String getrailwayno(String trainno){
		String railwayno = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				railwayno = rs.getString("railwayno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return railwayno;
	}
	public String getseatno(String trainno){
		String seatno = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				seatno = rs.getString("seatno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return seatno;
	}
	public String getsalestage(String trainno){
		String salestage = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				salestage = rs.getString("salestage");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return salestage;
	}

	public String getstartstage(String trainno){
		String startstage = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				startstage = rs.getString("startstage");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return startstage;
	}
	
	public String getarrivestage(String trainno){
		String arrivestage = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				arrivestage = rs.getString("arrivestage");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return arrivestage;
	}
	
	public String getchangetrain(String trainno){
		String changetrain = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				changetrain = rs.getString("changetrain");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return changetrain;
	}
	
	public String gettickettype(String trainno){
		String tickettype = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				tickettype = rs.getString("tickettype");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return tickettype;
	}
	
	public String getstarttime(String trainno){
		String starttime = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				starttime = rs.getString("starttime");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return starttime;
	}
	
	public String getsaletime(String trainno){
		String saletime = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				saletime = rs.getString("saletime");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return saletime;
	}

	public String getticketprice(String trainno){
		String ticketprice = "";
		String sql = "select * from salereturnticket where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				ticketprice = rs.getString("ticketprice");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return ticketprice;
	}
	
	public String getseatcount(String trainno){
		String seatcount = "";
		String sql = "select * from railway where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				seatcount = rs.getString("seatcount");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return seatcount;
	}
	
	public String getuseable(String trainno){
		String useable = "";
		String sql = "select * from railway where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				useable = rs.getString("useable");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return useable;
	}
	
	public String getuseable(Object trainno){
		String useable = "";
		String sql = "select * from railway where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setObject(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				useable = rs.getString("useable");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return useable;
	}
	
	public String getrailwaytype(String trainno){
		String railwaytype = "";
		String sql = "select * from railway where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				railwaytype = rs.getString("railwaytype");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return railwaytype;
	}
	
	public String getsurrogateno(String surrogateno){
		String sno = "";
		String sql = "select * from surrogatesaleticket where surrogateno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,surrogateno);
			rs = ps.executeQuery();
			if(rs.next()){
				sno = rs.getString("surrogateno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return sno;
	}
	
	public String getsurrogatename(String surrogateno){
		String sname = "";
		String sql = "select * from surrogatesaleticket where surrogateno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,surrogateno);
			rs = ps.executeQuery();
			if(rs.next()){
				sname = rs.getString("surrogatename");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return sname;
	}
	
	public int gettypeno(int typeno){
		int tno = 0;
		String sql = "select * from tickettable where typeno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setInt(1,typeno);
			rs = ps.executeQuery();
			if(rs.next()){
				tno = rs.getInt("typeno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return tno;
	}
	
	public String getcharge(String charge){
		String ch = "";
		String sql = "select * from tickettable where typeno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,charge);
			rs = ps.executeQuery();
			if(rs.next()){
				ch = rs.getString("charge");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return ch;
	}
	
	public String getstagename(String stagename){
		String sname = "";
		String sql = "select * from trainstage where stagenameindex = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,stagename);
			rs = ps.executeQuery();
			if(rs.next()){
				sname = rs.getString("stagename");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return sname;
	}
	
	public String getstagenameindex(String stagenameindex){
		String index = "";
		String sql = "select * from trainstage where stagenameindex = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,stagenameindex);
			rs = ps.executeQuery();
			if(rs.next()){
				index = rs.getString("stagenameindex");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return index;
	}
	
	public String getstageno(String trainno){
		String stageno = "";
		String sql = "select * from trainstation where trainno = ?";
		try{
			ps = con.prepareStatement(sql);
			ps.setString(1,trainno);
			rs = ps.executeQuery();
			if(rs.next()){
				stageno = rs.getString("stageno");
			}
		}catch(SQLException e)
		{
			System.out.println (e.getMessage());
		}
		return stageno;
	}
	
	public String getarrivetime(String trainno){
		String arrivetime = "";