order_10_5.jsp

来自「该系统是一个B/S结构的公司定饭系统,整套软件由JSP编制,希望大家能够多提宝贵」· JSP 代码 · 共 57 行

<%@ page contentType="text/html; charset=GB2312" %>
<%@ page import="com.hzs.order.*" %>
<jsp:useBean id="DB" scope="page" class="com.hzs.order.DBHandle" />
<%
if (session.getAttribute("grade")==null||!(session.getAttribute("grade").equals("6")))
{
%>
      <jsp:forward page="con_error.jsp">
      <jsp:param name="error_nm" value="非 法 操 作" />
      <jsp:param name="error_all" value="非法操作,您并不是超级管理员!" />
     </jsp:forward>
<%
}
String id=request.getParameter("id");
if (id==null)
{
%>
      <jsp:forward page="con_error.jsp">
      <jsp:param name="error_nm" value="非 法 操 作" />
      <jsp:param name="error_all" value="非法操作,请先登陆!" />
     </jsp:forward>
<%
}
int return_val=0;
int tempval;
  try{
    DB.connect();
    DB.transaction();
    Vector result=DB.select("select count(*) from all_food where food_tel='"+id+"'");
    tempval=Integer.parseInt(result.elementAt(0).toString());
    return_val=DB.update("delete from all_food where food_tel='"+id+"'");
    if (tempval!=return_val)
    {
      DB.rollback();
    }
    return_val=DB.update("delete from all_cp where cp_id="+id);
    if (return_val!=1)
    {
        DB.rollback();
    }
    DB.commit();
    DB.close();
  }//end try
  catch(DBException  e)
  {
%>
      <jsp:forward page="con_error.jsp">
      <jsp:param name="error_nm" value="数 据 库 错 误" />
      <jsp:param name="error_all" value="<%=e.getMessage()%>"/>
      </jsp:forward>
<%
  }
  finally{
        DB.close();
          }
%>
<jsp:forward page="order_10_1.jsp" />