How to read JSONObject in dojo?
I have a JSONObject in my jsp.
JSONObject myJSONObj = new JSONObject();
How can I read this myJSONObj in my dojo or *.js file, in 'onload function'.
views:
32answers:
2
A:
might want to try this:
window.load = function(){
var myjson = <%= getJSON() %>
//using myjson
}
getJSON is a function which returns myJSONObj as JSON formatted String
update: short example. hope it helps
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<%
class Foor{
public String getJSON(){
return "{foo:'bar'}";
}
}
Foor myfoo = new Foor();
%>
<script language=javascript>
var myjson = <%= myfoo.getJSON()%>
alert(myjson.foo);
</script>
</head>
<body>
</body>
</html>
jebberwocky
2010-10-26 05:14:19
@jebberwocky: I tried this, but it gives me "illegal XML character" error.
Rachel
2010-10-26 05:23:41
@rachel hope the updated example helps
jebberwocky
2010-10-26 05:53:03
Since the output of "myfoo.getJSON()" will be considered a string within the script tag you should wrap it like this:var myjson = dojo.fromJson('<%= myfoo.getJSON() %>');and I think that example will work...
subhaze
2010-10-26 07:43:01
@subhaze, if I am creating instance of Foor class 'myfoo' in my JSP,then will myfoo is accessible in dojo (js file). I tried this also. But whenever I say var **myjson = dojo.fromJson('<%= myfoo.getJSON() %>');** then code doesnot get compiled even. Kindly give your suggestion.
Rachel
2010-10-26 13:18:00
I've not worked with JSP before but with PHP that's how I've done it. If your code is similar to above where you mix server-side code with HTML then I would think you're instance of Foor class 'myfoo' should work as stated above with the modification of using the dojo.fromJson to make sure it's valid JSON as {foo:'bar'} is not. http://pastebin.com/bL9s9xYa That's about all I can think of sorry :/
subhaze
2010-10-26 13:34:17
Maybe just try separating it all out. A page that is strictly JSP that outputs JSON and an HTML file that does an AJAX request for that JSON...
subhaze
2010-10-26 13:37:14
A:
Try wrapping the output in the toJson function.
For running it when the DOM is ready try addOnLoad
And if you're wanting to load it via AJAX onLoad try this
[EDIT]
It just dawned on me that I put "toJson" it should be fromJson since you're needing to convert a JSON string to a JSON object. Here is an example dojo: json string to json object
subhaze
2010-10-26 06:47:38
@Subhaze, My major concern is how can I retrieve myJSONObj object in dojo, as I am creating and setting in JSP. Any suggestion is highly appreciated.
Rachel
2010-10-26 10:50:48