savebookexcute.java

手工完成

package Bean;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;

public class SaveBookExcute {

	public ArrayList<BookBean> saveBookQuery(String strusername)
	{
		String SQLString = null;
		String username = strusername;
		
		java.sql.ResultSet sqlRst = null;
		java.sql.Statement Stmt = null;
//		Users user = new Users();                 //--------这句话写在是错误的-----
		ArrayList<BookBean> arraylist = new ArrayList<BookBean>();
		
		Connection conn=new DBConn().getConn();
		try 
		{
			SQLString = "select * from savebookview  where username = '" + username + "'";
//			SQLString = "select * from book";
			Stmt = conn.createStatement(); //语句对象 
			sqlRst=Stmt.executeQuery ( SQLString); ; //结果集对象 
			
			while(sqlRst.next())
			{
				BookBean book = new BookBean();   //---这句话必须写在这------
				book.setBookID(sqlRst.getString("bookID"));
				book.setBookName(sqlRst.getString("bookName"));
				book.setAuthor(sqlRst.getString("author"));
				book.setPrice(sqlRst.getDouble("price"));
				book.setDiscount(sqlRst.getDouble("discount"));
				book.setPress(sqlRst.getString("press"));
//				book.setSum(sqlRst.getInt("sum"));
				book.setPicroot(sqlRst.getString("picroot"));
				
				arraylist.add(book);   //----把BookBean放入ArrayList中
			}
				Stmt.close (); 
				conn.close();
	
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return arraylist;
	}
	
	public void saveBookDel()
	
	{
		
	}
}