allfoodsbean.java

来自「订餐系统」· Java 代码 · 共 60 行

package Entities;

import java.sql.*;
import java.util.*;
import javax.servlet.jsp.jstl.sql.Result;
import javax.servlet.jsp.jstl.sql.ResultSupport;

import Dao.*;

public class allFoodsBean {

	private Connection con;
	private String sql;
	
	//返回FoodBean列表
	public List getFoods()
	{
		List foods = new ArrayList();
		//获取书籍列表
		try
		{
			SQLCommandBean sqlCommandBean = new SQLCommandBean();
			con = ConnectionManage.getConnection();
			sql = "select foodID,foodName,remark,foodPrice,description,foodImage from foodInfo";
			sqlCommandBean.setConn(con);
			sqlCommandBean.setSqlValue(sql);
			Result result = sqlCommandBean.executeQuery();
			if(result == null || result.getRowCount() == 0)
			{
				//没有查出Book
				System.out.print("没有记录");
			}
			else
			{
				int rowCount = result.getRowCount();
				//读取行数据
				for(int i = 0; i < rowCount; i ++)
				{
					Map row = result.getRows()[i];
					FoodBean food = new FoodBean();
					food.setFoodID((String)row.get("foodID"));
					food.setFoodName((String)row.get("foodName"));
					food.setRemark((String)row.get("remark"));
					food.setFoodPrice(Double.parseDouble(row.get("foodPrice").toString()));
					//food.setFoodPrice(((Double) row.get("foodPrice")).doubleValue());
					food.setDescription((String)row.get("description"));
					food.setFoodImage((String)row.get("foodImage"));
					foods.add(food);
					
				}
				
			}
		}catch(Exception ex)
		{
			ex.printStackTrace();
		}
		return foods;
	}
}