ow to deal with jSON object wrapper in POST

[pilami]

Hello,

I'm using Spring MVC 3.0.3 on backend and Ext JS on frontend.

When creating a new record in grid, Ext send a POST request with following JSON string:

{"data":{"name":"aa","label":"a","description":"a" }}

The record is wrapped in a JSON object named "data".

From what I have seen and read, Spring Jackson message converter expects the objet directly as below:

{"name":"aa","label":"a","description":"a"}

I implemented a wrapper class ExtJsRequest in order to mimic the JSON wrapping.

public class ExtJsRequest {

	private Application data;

	public void setData(Application data) {
		this.data = data;
	}

	public Application getData() {
		return data;
	}
}

And I used @RequestBody as below:

@RequestMapping(value = "/application", method = POST)
public ModelAndView create(@RequestBody ExtJsRequest extRequest, HttpServletResponse response) {
	...
}

An alternative would be to customize the Ext.data.JsonWriter to suppress object wrapping on client side.

But I was wondering if there is a more convenient way to do it in Spring: in the controller or message converter?

Thanks,

Phil

[sja]

After a debugging session I think, that your method should be like this:

@RequestMapping(value = "/application", method = RequestMethod.POST)
public ModelAndView create(@ModelAttribute("data") EntityClass data, HttpServletResponse response) {
	...
}

EntityClass should be the Class of your Entity, like Pet oder Account ...
Another hint: The Attribute of ModelAttribute maybe not optional!