commentaction.java

一个用java开发的网上购物系统。基本功能都是可以实现的

package store;

import java.util.*;
import java.sql.*;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
public class CommentAction extends Action {
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
  HttpSession session=request.getSession();
  DynaActionForm tform=(DynaActionForm)form;
try{
  String pid=(String)tform.get("pid");
  int id=Integer.parseInt(pid);
  String customer=(String)tform.get("customer");
  if(customer.equals(""))
  {
    customer="guest"+(int)(Math.random()*10000);
  }
  customer=new String(customer.getBytes("ISO-8859-1"));
  String content=(String)tform.get("content");
  content=new String(content.getBytes("ISO-8859-1"));
  String ip=request.getRemoteAddr();
  String date=(new Date()).toLocaleString();
  DBConn conn=new DBConn();
  String sql="INSERT INTO commentary VALUE(?,?,?,?,?,?)";
  PreparedStatement pstmt=conn.getPstmt(sql);
    pstmt.setInt(1,0);
    pstmt.setInt(2,id);
    pstmt.setString(3,customer);
    pstmt.setString(4,content);
    pstmt.setString(5,ip);
    pstmt.setString(6,date);
  int u=pstmt.executeUpdate();
  if(u>0){
    DetailInfo DI=new DetailInfo();
    Vector vc=DI.getCommentary(id);
    ProInfo PI=DI.getProDetailInfo(id);
    session.setAttribute("commentary",vc);
    session.setAttribute("detail",PI);
  }
  else{
   return mapping.findForward("error");
  }
  pstmt.close();
 }
   catch(Exception e){
     return mapping.findForward("error");
  }
  return mapping.findForward("DispProInfo");
 }
}