Json body for webservice functions with multiple parameters

Question

I'm trying to do a post request which fails whenever I add a second parameter to the function.

This for example works with the following function:

public class Mock
{
     public String MyFirstValue { get; set; }
     public String MySecondValue { get; set; }
}

[HttpPost]
public ResponseDataDTO TestPost(Mock test)
{
     var response = new ResponseDataDTO();
     return response;
}

With the following body request:

{ 
   "MyFirstValue": "testvalue", 
   "MySecondValue": "testvalue" }
}

However when I add another parameter to this function, it does not work anymore because I'm not quite sure of how to construct the json:

[HttpPost]
public ResponseDataDTO TestPost(Mock test, Mock test2)
{
      var response = new ResponseDataDTO();
      return response;
}

My best guess of a body:

{ 
   "test": {
               "MyFirstValue": "testvalue", 
               "MySecondValue": "testvalue"
   }
   "test2": {
               "MyFirstValue": "testvalue2", 
               "MySecondValue": "testvalue2"
   }
}

I haven't had these problems before becuase I usually just have one object parameter which takes it all.

Another strange thing that I can't get to work is a method with only an integer parameter:

[HttpPost]
public ResponseDataDTO TestPostInteger(int test)
{
      var response = new ResponseDataDTO();
      return response;
}

With body:

{ 
   "test" : 1
}

This gives me a 404, it wont even find the method. If I put the parameter in URL instead, it works.

Maggie Ying · Accepted Answer · 2014-06-26 19:42:01Z

2

The response body can only bind to one object.

Having said that, one solution would be to TestPost takes in an array of Mock. Like this:

 [HttpPost]
 public ResponseDataDTO TestPost(Mock[] tests)
 { ... }

Json:

[
   {
       "MyFirstValue": "testvalue", 
       "MySecondValue": "testvalue"
   },
   {
       "MyFirstValue": "testvalue2", 
       "MySecondValue": "testvalue2"
   }
]

answered Jun 26, 2014 at 19:42

Maggie Ying

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1 Comment

Lucas Arrefelt Over a year ago

Thank you, I did not know that it could only bind to one object.

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