Send JSON object to Struts 2 action by using strut2 jquery plugin tags

Question

We can send JSON to Struts2 actions by json interceptor. There is good sample at http://tech.learnerandtutor.com/send-json-object-to-struts-2-action-by-jquery-ajax/.

The json interceptor requires that the requests content type be application/json or application/json-rpc this can be set when we directly use Ajax like:

$.ajax({
    url: "writeJSON.action",
    data: data1,
    dataType: 'json',
    contentType: 'application/json',

But we are using struts 2 jquery plugin tags (sj:a and sj:submit ...) which manage ajax calls for us.

Is there any way that we can set the contentType with these tags.

I did not find tag properties for this.

If it is not implemented is there any other way to set it.

Answer 1

You should set Content-type: application/json header to xhr object that is used by the $.ajax().

$.ajax({
    url: "writeJSON.action",
    data: data1,
    dataType: 'json',
    contentType: 'application/json',

The plugin is using $.ajaxSubmit(), this kind of submission should be eliminated because it doesn't work with json data.