Convert list of java object in javascript arraylist

Question

I have a question: I have a java object that's a List<User> and I want pass it to javascript for populate the source of a jQuery autocomplete. From jsp I pass the object present in the session by this tag

<input type="hidden" id="all_users" value=" < s: property value="#session.allUsers" /> " />

Then in javascript

var allUsers = $('#all_users').val().replace('[','').replace(']','').split(',');

Now I don't know what's next step because I obtain value as bean.User@4a255c. How I can convert this object for manage it in javascript and obtain the values that contains?

You could use JSON. For instance, use Jackson to serialize your List<User> to a JSON array, then parse it using JavaScript's builtin JSON capabilities to make it an array. — fge, Commented Jun 14, 2013 at 15:03
How big is the list? Is it required that you have the data in the client page, or is Ajax enough? Is the JS external to the JSP? — Dave Newton, Commented Jun 14, 2013 at 15:41
The list could be big and has 3 field for every item. Now I tried JSON and the conversion of java object in json object is ok, but when I pass the value in the jsp through this tag: <input type="hidden" id="all_users" value="<s:property value="#session.allUsers"/>"/> in javascript the parsing of that value not work because it's a unknow object... Here I show how I wrote: var allUsers = $('#all_users'); var array = JSON.parse(allUsers); where is the problem? — Felice Guarneri, Commented Jun 15, 2013 at 14:40
Problem risolved, I forget of call method .val() var allUsers = $('#all_users').val(); var array = JSON.parse(allUsers); Now is Ok, JSON is very powerful! — Felice Guarneri, Commented Jun 15, 2013 at 14:55

Dhrubajyoti Gogoi · Accepted Answer · 2013-06-14 15:13:40Z

0

I do not have experience with struts but you may try something like the following:

<input type="hidden" id="all_users" value=" < s: property value="#Arrays.toString(session.allUsers.toArray())" /> " />

answered Jun 14, 2013 at 15:13

Dhrubajyoti Gogoi

1,34010 silver badges20 bronze badges

And yes I agree with the comments, that JSON would be a better alternative.
– Dhrubajyoti Gogoi
Commented Jun 14, 2013 at 15:14
Can someone give me some example or guide of how I do it with JSON? Thanks
– Felice Guarneri
Commented Jun 14, 2013 at 19:14

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