为什么loginID传不到下个页面啊？代码如下

对这个是get传参方式，然后你在这里alert一下loginID是不是空，完了你在user_do.jsp页面看是怎么取值
1，
<%
String loginID = request.getParameter("loginID");
%>
2，${param.loginID }

get还是一样的情况啊，大哥,全部代码如下
<%@ page language="java"  pageEncoding="UTF-8"%>
<%@include file="/common/dhtmlx-js.jsp"%>
<%
  response.setHeader("Cache-Control", "no-cache");
  response.setHeader("Pragma", "no-cache");
  response.setDateHeader("Expires", 0);
%>

<html>
<head>
<title>用户管理</title>
<script language="javascript" src="<%=basePath %>/js/lib/jquery.js"></script> </head>
    <script>
    var jq = jQuery.noConflict();
    var mygrid;
    var mymenu;
    jq(document).ready(function() {
    mygrid = new dhtmlXGridObject('gridbox');
    mygrid.setImagePath("<%=basePath %>/ext/dhtmlx/dhtmlxGrid/imgs/");
    mygrid.setHeader("账号,密码,邮箱,手机");
    mygrid.setInitWidths("200,200,360,360");
    mygrid.setColAlign("center,center,center,center");
    mygrid.setColTypes("ro,ro,ro,ro");
    mygrid.setColSorting("str,str,str,str");
    mygrid.setSkin("dhx_skyblue");
    mygrid.init();


    mymenu = new dhtmlXToolbarObject("tab");
    mymenu.loadXML("tab.jsp?lb=toolbar",afterMenu);
    mymenu.setSkin('dhx_skyblue');
    mymenu.attachEvent("onClick", function(id) {
     var xh = mygrid.getSelectedRowId();

     if(id == "new") {

     window.open("register.jsp","window","height=600,width=400");
     //window.location.href=window.location.href;
     }


     if(id == "del") {
    if (xh == "" || xh == null || xh == "null"){
    alert("请选择需删除的记录");
    return;
    } else {
    mygrid.attachEvent("onRowSelect",function(id,ind) {

            loginID = mygrid.cells(id,0).getValue();
            alert(loginID);
            });

    doDel();


    }

     }


     if(id == "edit") {
     doEdit(xh);
     }


     if(id == "view") {
     if (xh == "" || xh == null || xh == "null"){
    alert("请选择需查看的记录");
    return;
    }
     openModal("user_do.jsp?optype=view&xh="+xh,"window",800,410);
     }

     });
     });
     //加载数据
</script>
  <body>
   <table cellpadding="0" cellspacing="0" width="100%" height="100%">
    <tr valign="top">
     <td>
      <div style="width:100%; height:100%;" id="gridbox"></div>
     </td>
    </tr>
    <tr height="26px">
     <td>
      <div id="tab" style="height: 26px"></div>
     </td>
    </tr>
   </table>
  </body>
<script>
function afterMenu() {
  mygrid.loadXML("tab.jsp?lb!=toolbar");
}

    function doEdit(rowId) {
     var xh = rowId;   if (xh == "" || xh == null || xh == "null") {
    alert("请选择需编辑的记录");
    return;
  }
    }    function doDel() {
   mygrid.attachEvent("onRowSelect",function(id,ind) {

           loginID = mygrid.cells(id,0).getValue();
           alert(loginID);
           });
       var result = jq.ajax({
             type : "POST",
             url : "user_do.jsp?optype=del&loginID="+loginID,
             async : false
           }).responseText;
       result = trim(result);

       if (result == "ok") {
              alert("删除成功！");
              window.location.href = window.location.href;
          } else {
               alert("删除失败");
          }
         }
    </script>

</html>

jq.ajax如何使用，请参考jquery官方教程。

1、看看服务器的user_do.jsp这个url直接访问能通吗？//jsp在不在根目录？
2、是只有loginID拿不到吗？//是不是参数名写错了?
3、ajax，我这样写，仅供参考；function queryRegion(){
var network= $("#network").val();
$.ajax({
type:"POST",
url:"QueryIon",
data:"network="+network,
success:callback,
error : function(data){
alert("无法向服务器提交请求!");
}
});
function callback(data){
//alert("network_id ="+data);
$("#result").html(data);
}
}

谢谢，一开始是我接受的参数写错了，然后自己发现了，现在已经改完了，也改成了这方法，不过我还是不知道该如何接收一个参数来显示成功还是失败。。            jq.ajax({
             type : "POST",
             data : "&loginID="+loginID,
             url : "user_do.jsp?optype=del",
             async : false,
             dataType : "json",
             successs : function(data) {
                            if(){
                            // view("修改成功！");
            alert("删除成功！");
            window.location.reload();
            } else {

            }
            },
error : function() {
                // view("异常！");
                alert("异常！");

            }

           });这是jq.ajax,下面是uesr_do.jspif("del".equals(optype)) {
     request.setCharacterEncoding("UTF-8");
     String loginID = request.getParameter("loginID");
     System.out.println("loginID="+loginID);
     Connection con = DBcon.getCon();
     Statement stmt = (Statement)con.createStatement();
     try {

    String sqlstring = "delete from T_LOGIN where LoginID = '"+loginID+"'";
    int a = stmt.executeUpdate(sqlstring);

    if(a>0)
    out.println("<script>alert('用户删除成功！')</script>");
        else
        out.println("<script>alert('用户不存在！'</script>");

     }

调试易

为什么loginID传不到下个页面啊？代码如下

解决方案 »