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POPosting JSON via JQuery to a Spring Roo Controller
 

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    <p>I recently ran into an issue using JQuery and Spring Roo. I wanted to post data to a JSON enabled URL of a Spring Roo controller (I don't think this is especially important, but I put it out there just for clarity's sake). I knew that the controller worked fine because I could post data to it via Curl command, like this:</p> <pre><code>curl -i -X POST -H "Content-Type:application/json" http://localhost:8080/PeopleProject/people -d '{"firstName":"some","lastName":"guy","email":"some@guy.com"} </code></pre> <p>So, then I tried posting data from a $.post() call in Javascript, like this:</p> <pre><code> var data = {"firstName":"some","lastName":"guy","email":"some.guy@gmail.com"}; $.post('/PeopleProject/people', data, successfulPost ) ; </code></pre> <p>However, I would get errors on the server side about not being able to parse the input. Running the debugger, I could see that the data being posted via this Javascript was coming across URL encoded, whereas the data from the curl command was not.</p> <p>Finally, after much messing around, I tried this Javascript:</p> <pre><code> var jqxhr = $.ajax({ url: "/PeopleProject/people", processData : true, contentType:"application/json", type : "POST", data: '{"firstName":"some","lastName":"guy","email":"some.guy@gmail.com"}', }) </code></pre> <p>And this worked! But, I am not sure why it worked and the $.post() did not. Can anyone more knowledgeable than me about Javascript/JQuery explain this?</p> <p>I thought I read somewhere that a JSON post to a server would encode stuff as name value pairs, but I am guessing this isn't right since I have seen that a the curl command posted nice, clean JSON, while the $.post() pushed a URL encoded query string.</p> <p>So my question is: is the above ajax() call the preferred method for pushing JSON data to a server? Or, is there a way to use $.push() and get it work?</p>
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