balusc I need your help
Pls dont mistake me for calling your name directly in my posting since I need help
Now I am using AJAX to pass the parameters
below is the code that i am using to download a file using a hyperlink
<tr><td><a href="<%=totaldisplayfileName%>" onClick="callThisPage2(<%=displayFileId%>)"><%=displayfileName%></a></td></tr>
In the above coding totaldisplayfileName is the dynamically build filepath that will point to the file which should be downloaded.
Iam fine till file download now In the Onclick event I am calling the following javascript function . I need to open a url as specifed in the below coding but its not working.Can someone pls help me on this
<tr><td><a href="<%=totaldisplayfileName%>" onClick="callThisPage2(<%=displayFileId%>)"><%=displayfileName%></a></td></tr>
<%
}
%>
<script language="javascript">
function callThisPage2(getfileid){
var t = getfileid;
alert(t);
document.selectfile.submit();
document.dynamicfileid.value = t;
var url ='http://192.168.2.199:7001/beapf/SimpleCounter';
if(window.ActiveXObject){
httpRequest =new ActiveXObject();
}
else{
httpRequest =new XMLHttpRequest();
}
alert(httpRequest.status);
httpRequest.open("GET", url,true);
//httpRequest.onreadystatechange = function() {processRequest(); } ;
httpRequest.send("null");
<%
//display(p);
%>
}
function processRequest()
{
if (httpRequest.readyState == 4)
{
if(httpRequest.status == 200)
{
}
else
{
alert("Error loading page\n"+ httpRequest.status +":"+ httpRequest.statusText);
}
}
}
</script>
[2878 byte] By [
rameshra] at [2007-11-27 9:46:04]
# 1
can you be more specific, what part is failing? does the javascript function call ever start? or is the problem in the javascript code?
as a start, can you please load that page in your brower and do a view source and show us what the links look like after they have been rendered? I have a feeling your onClick isn't rendering correctly.
no need to single out users in your title either, there are plenty of capable people here to help.
# 2
May be you need to set request header after httpRequest.open("GET", url, true);httpObject.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" ); Why did you comment:httpRequest.onreadystatechange = processRequest;
skp71a at 2007-7-12 23:55:53 >
# 3
I understand den about highlighting a single person, since I was looking for a reply I pointed out.
Thanks for yuor suggesstin and help.
Coming to the subject I have the problem in javascript.The onclick is not functioning. When Ilick the hyperlink the file is getting downloaded along with which I am calling a javascript function on the OnClick event.
The javascript function takes a parameter which is a fileid. Now I need to do some update operation in my databse with this fileid.
So pls help me on this .
# 4
Hi Skp,I just tried a to see what happens if I comment it out . Could you please recode my code in the places where I went wrong
# 5
function callThisPage2(getfileid){
var t = getfileid;
alert(t);
document.selectfile.submit();
document.dynamicfileid.value = t;
var url = 'http://192.168.2.199:7001/beapf/SimpleCounter';
if(window.ActiveXObject){
httpRequest = new ActiveXObject();
}
else{
httpRequest = new XMLHttpRequest();
}
alert(httpRequest.status);
httpRequest.open("GET", url, true);
httpRequest.onreadystatechange = processRequest; //new
httpRequest.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" ); //new
httpRequest.send("null");
<%
//display(p);
%>
}
Also, put the alert in the callback function processRequest() and see you get 4 and 200. if not the problem is with url action, that you have passed.
skp71a at 2007-7-12 23:55:53 >
# 6
Do not use quotes:httpRequest.send("null");should be:httpRequest.send(null);
skp71a at 2007-7-12 23:55:53 >
# 7
I changed my coding this is just a sample application. I am able to get first alert and thatsit no other action is taking place where am I going wrong?
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="javascript">
function callThisPage2(getfileid){
var t = getfileid;
alert(t);
var url = 'http://192.168.2.199:7001/beapf/SimpleCounter';
if(window.ActiveXObject){
httpRequest = new ActiveXObject();
alert(httpRequest.status);
}
else{
httpRequest = new XMLHttpRequest();
}
httpRequest.open("GET", url, true);
httpRequest.onreadystatechange = function() {processRequest(); } ;httpRequest.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" ); //new
httpRequest.send("null");
<%
//display(p);
%>
}
function processRequest()
{
if (httpRequest.readyState == 4)
{
if(httpRequest.status == 200)
{
alert(httpRequest.status);
}
else
{
alert("Error loading page\n"+ httpRequest.status +":"+ httpRequest.statusText);
}
}
}
</script>
</head>
<body>
<form name="form1" method="post">
<select name="select" onChange="callThisPage2(2)">
<option value="1">test1</option>
<option value="2">test2</option>
</select>
</form>
</body>
</html>
Message was edited by:
rameshr
# 8
Did you try this?httpRequest.send(null);
skp71a at 2007-7-12 23:55:53 >
# 9
ya it didn't give me any result it shows a javascript error in the task pane
# 10
Actually, what are you doing in the action?
http://192.168.2.199:7001/beapf/SimpleCounter?
If you want to get back something in the responseText (in your callback fn), it should be something like below code:
public class DeleteAction extends Action
{
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception
{
HttpSession session = request.getSession( true );
String result = null;
try
{
result = this.deleteItem();
{
catch (Exception e)
{
}
PrintWriter out = response.getWriter();
out.println(result);
// Finish with
return null;
}
}
skp71a at 2007-7-12 23:55:53 >
# 11
Remove the url present in the <a href=""> and send the URL to the JS function as a parameter. and perform a call to that url. i think it will solve your problem.
