borrowaction.java

JAVA图书管理软件源码,是我师兄亲自参与编的毕业设计

package com.ivan.menu;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;

import com.ivan.db.Database;

public class BorrowAction 
{

	public static boolean borrow(String readerid,Vector<String> v)
	{
		Vector<String> updatesql = new Vector<String>();
		Vector<String> insertsql = new Vector<String>();
		
		
		
		for(int i=0;i<v.size();i++)	
		{
			updatesql.add("update bookitem set status ='已借出' where  bookId='"+v.get(i)+"'");
			insertsql.add("insert into borrowinfo(readerId,bookId,bookName,borrowTime) values('" +
					       readerid+"','"+v.get(i)+"',(select book.bookName from bookitem,book where " +
					       		"bookitem.bookId='"+v.get(i)+"' and bookitem.ISBN = book.ISBN),sysdate())");
		}
		
		Connection connection;		
		connection = Database.getConnection();            //建立数据库连接
		Statement stmt=null;
		
		try 
		{
			stmt= connection.createStatement();
			for(int i=0;i<updatesql.size();i++)	
			{
				stmt.executeUpdate(updatesql.get(i));
				stmt.executeUpdate(insertsql.get(i));
				
			}
			   
			return true;
		} 
		catch (SQLException e) 
		{
			try 
			{
				connection.rollback();
			} 
			catch (SQLException e1)
			{
				
				e1.printStackTrace();
			}
			e.printStackTrace();
		}
		
		finally
		{
			try 
			{
				connection.close();
			} 
			catch (SQLException e)
			{
				
				e.printStackTrace();
			}
		}
		
		return false;
	}
	
}