how to bind data to a java class using Ajax and Controller?

[eros]

class:

public class Person implements Serializable {
    private int id;
    private String name;
    private List<Address> addresses;
}

controller:

public class PersonController extends MultiActionController {
    private RegistrationService registrationService;
    
    @RequestMapping(method = RequestMethod.POST)
    public void register(HttpServletRequest req, HttpServletResponse res) {
        Person person = bindPostedData(req);
        
        registrationService.register(Person);
        .......
    }

    private Person bindPostedData(HttpServletRequest req) {
        Person person = new Person();
        person.setId(req.getParamter("id"));
        person.setName(req.getParamter("name"));
        ......

        return person;
    }
}

upon ajax call, I serialize the form elements one by one.

example JS (register button click event):

var person = {
    "id": $("#person\\.name").val(),
    "name": $("#person\\.name").val(),
    .....
}

ajaxcall(person);

before that, it was a spring webflow (swf 2.0.9.RELEASE, mvc 2.5.6.SEC02). Instead of ajaxcall(), I use form submit then trigger the webflow event. Directly call the registrationService.register(flowScope.Person) and the bind was automated.

In some reason, I need to use Ajax and call the service via controller. But... I had problem with data binding that's why I get the data from request object (posted data) then bind to Person class which is very tedious.

Please guide me or give me some hints to investigate.

Thanks in advanced.

[eros]

anyone here doing the same approach?
please guide me on.

[Enrico Pizzi]

First of all, you are mixing new annotated controller strategy with old, deprecated controllers. This is bad, remove the "extends MultiActionController" and only use annotated @Controllers with <mvc:annotation-driven/>.

Once you got this done, and Spring mvc is properly configured with mvc:annotation-driven, I suggest you take a look at the DWR framework which integrates perfectly with Spring 3 and relieves you of the burden of JSON serialization-deserialization. In short, it lets you use Java objects directly in javascript: ajax call, json serialization, and all the "boring" stuff is handled automatically by the framework. I have this useful link that teaches how to integrate DWR with Spring so that you can use Spring annotations to mark DWR objects:

http://www.codercorp.com/blog/spring...notations.html

[eros]

Thanks for the response.

If you scroll down the comments. You may notice that I already commented on November 30th, 2009. For performance issue, I opted no for DWR.