util.java

jsp购物车

package com.accp.util;

import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Util {

	public static String format(String str)
	{
		return str==null?"":str;
	}
	public static void jump(HttpServletRequest req,HttpServletResponse res,String url)
	{
		RequestDispatcher ds=req.getRequestDispatcher(url);
		try {
			ds.forward(req,res);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}