删除servlet

package com.sxt.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sxt.dao.GoodsDao;
import com.sxt.dao.impl.GoodsDaoImpl;

public class DelGoodsServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    this.doPost(request, response);

}

public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String gid = request.getParameter("gid");
    String gurl = request.getParameter("gurl");
    GoodsDao dao = new GoodsDaoImpl();

    PrintWriter out = response.getWriter();
    try {
        boolean b = dao.delGoods(gid);
        if (b) {
            // 删除本地图片
            File f = new File(request.getServletContext().getRealPath("/")+gurl);
            if(f.isFile()){
                f.delete();
            }
            out.print(1);
        } else {
            out.print(0);
        }
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

}