CODEWITHSUNDEEP
javaspringspring-mvc
Matteo Rolla
Matteo Rolla

Reputation: 257

Spring: Programmatically bind object from request

Is there a way to programmatically bind form data to an object knowing the class type? I thought there would be something like

T instance = something.pleaseDoSomeMagicBind(class, request)

somewhere or something similar, but I had no luck so far.

Thank you

Upvotes: 9

Views: 2057

Answers (2)

Matteo Rolla
Matteo Rolla

Reputation: 257

Thanks to Sotirios (you saved my sanity) hint, I've been able to achieve what I've been looking for and I'm leaving here my findings if anyone else is interested

final WebDataBinder binder = new WebDataBinder(BeanUtils.instantiate(clazz));
ServletRequestParameterPropertyValues values = new ServletRequestParameterPropertyValues(request);
binder.bind(values);
final BindingResult result = binder.getBindingResult();

Upvotes: 11

Sotirios Delimanolis
Sotirios Delimanolis

Reputation: 280178

Spring binds form data by mapping request parameters to fields of instances of handler method parameter types based on matching names.

.../asd?someValue=123

will be bound to an instance of

public class Backing {
    private String someValue;
    //getters and setters
}

assuming you have a request handler like

@RequestMapping
public String handle(Backing backing) {
     return backing.getSomeValue(); // "123"
}

Nothing exists like what you are describing.

Upvotes: 1

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