CODEWITHSUNDEEP
javaspringrestspring-restcontroller
membersound
membersound

Reputation: 86627

How to nest @PathVariable in spring-rest?

I have a simple @RestController service that takes query parameters, and spring automatically parses them to an bean:

@ResponseStatus(HttpStatus.OK)
@RequestMapping(value = "/rest", method = RequestMethod.GET)
public MyDTO getGiataHotel(@Valid MyParams p) {
    Sysout(p.getId()); //prints "123"
}

public class MyParams {
    private int id;
    //private SubParams subs;
}

Query: .../rest?id=123

Now I'd like to structure the parameter object with nested classes. How can I achieve this?

public class SubParams {
   private String name;
   //some more
}

Ideally my query should be: Query: .../rest?id=123&name=test, and the "test" string should go into the SubParams bean.

Is that possible?

Upvotes: 3

Views: 943

Answers (3)

JJ_Jacob
JJ_Jacob

Reputation: 186

maybe u should use RequestMethod.POST, like this

@RequestMapping(value = "/rest", method =   RequestMethod.POST)
public ModelAndView getGiataHotel(@ModelAttribute("subparams") SubParams subparams){
      SubParams sub=subparams;
      //do something...
}

Upvotes: 0

Karthik R
Karthik R

Reputation: 5786

You have to register a Custom Covertor if you need to set to a inner class. The change would be following:

@ResponseStatus(HttpStatus.OK)
@RequestMapping(value = "/rest", method = RequestMethod.GET)
public MyDTO getGiataHotel(@ModelAttribute("subParam") MyParams params, @Valid MyParams p) {
    //Do stuff
}

The subParam denotes that there is a converter registered for conversion. 

public class MyParamsConverter implements Converter<String, MyParams> {

    @Override
    public MyParams convert(String name) {
        MyParams myParams = new MyParams();
        SubParams subParams = new SubParams();
        subParams.setName(name);
        myParams.setSubParams(subParams);
        return myParams;
    }

}

Upvotes: 1

Radu Toader
Radu Toader

Reputation: 1561

You can achieve this by using the @ModelAttribute annotation : http://docs.spring.io/spring/docs/3.1.x/spring-framework-reference/html/mvc.html#mvc-ann-modelattrib-method-args (this is not in the Path parameters, but in the requestParams either get/post)

@RequestMapping(value="/owners/{ownerId}/pets/{petId}/edit", method =   RequestMethod.POST)
public String processSubmit(@ModelAttribute("pet") Pet pet, BindingResult result) {

     if (result.hasErrors()) {
         return "petForm";
     } 

     // ...       

}

Upvotes: 0

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