payoperation.java

该源代码实现了系统的进货

package operation;


import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Calendar;
import java.sql.Date;

import dataBase.DataBase;

public class PayOperation
{
	private ResultSet rs;
	private DataBase db;
	public PayOperation()
	{
		db=new DataBase();
	}
	public String getPayID()
	{
		
			String PayID=null;
			Calendar cal=Calendar.getInstance();
			String Year=String.valueOf(cal.get(Calendar.YEAR));
			int m=Integer.parseInt(String.valueOf(cal.get(Calendar.MONTH)+1));
			String Month=null;
			if(m<10)
			{
				Month="0"+String.valueOf(m);
			}
			else
				Month=String.valueOf(m);
			String Day=null;
			int f=cal.get(Calendar.DAY_OF_MONTH);
			if(f<10)
			{
				Day="0"+String.valueOf(f);
			}
			else
				Day=String.valueOf(f);
			String Date=Year+Month+Day;
	        //查询是否存在当天的销售记录  
			
			String sql="select * from PayList where PayID like '%"+Date+"%'";
			
			try
			{
			  rs=db.getResult(sql);
			 if(rs.next())
			 {	
			  rs.last();
			  int Row=rs.getRow();
			  String R=String.valueOf(Row+1);
			  PayID="P"+Date+"00"+R;             //生成销售编号
			 }
			 else
			  PayID="P"+Date+"001";             //若不存在当天的销售记录，记为001
			   
			}
			catch(SQLException e)
			{
				e.printStackTrace();
			}
			return PayID;
		
	}
	public int  CheckSum(String ShouldPayID,float PaySum)
	{
		int a=0;
		String sql="select *  from ShouldPayList where ShouldPayID='"+ShouldPayID+"'";
		try
		{
			rs=db.getResult(sql);
			rs.next();
			float leaveSum=rs.getFloat("leaveSum");
			if(leaveSum==PaySum)
			{
				a=1;
			}
			else if(leaveSum>PaySum)
			{
				a=0;
			}
			else if(leaveSum<PaySum)
			{
				a=2;
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		return a;
	}
	public void PayInsert(int a,String PayID,String ShouldPayID,float PaySum,String Chargeman,Date PayDate,String PayNotice)
	{
		String v="是";
		if(a==1)
		{
			v="是";
		}
		else 
			v="否";
		String sql1="insert into PayList values('"+PayID+"','"+ShouldPayID+"',"+PaySum+",'"+Chargeman+"','"
		+PayDate+"','"+PayNotice+"')";
		String sql2="update ShouldPayList set LeaveSum=LeaveSum-"+PaySum+" where ShouldPayID='"+ShouldPayID+"'";
		String sql3="update ShouldPayList set ShouldPayFlag='"+v+"'where ShouldPayID='"+ShouldPayID+"'";
		try
		{
		db.ExeQuery(sql1, sql2, sql3);
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	public void Close()
	{
		db.close();
	}

}