Send string as json with GET request with POSTMAN

Question

I have a Java Spring API which expects 2 params, a simple String and a object:

@RequestMapping(value = "list", method = RequestMethod.GET)
public ResponseEntity<ListResource> getList(@RequestParam("agentName") String agentName,
                                            @RequestParam("paginationInfo") PaginationInfoList paginationInfo {
 
       //After http request I expect to have here my java Object PaginationInfoList ready to use

    }

I'm trying to send http GET request with Postman but I get this error, then I suppose that I'm not sending the data object paginationInfo in the correct way.

"Failed to convert value of type 'java.lang.String' to required type 'com.pippo.prova.test.model.in.PaginationInfoList'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to required type 'com.pippo.prova.test.model.in.PaginationInfoList': no matching editors or conversion strategy found"

Since I can't change the way of sending, in fact must be GET and I have to use @RequestParam`, I don't know how to send JSON data in Postman parameters. I'm trying this and also other options but I always get error.

you can take second argument as a String and pass String to requestParam i postman And After getting it convert String to Object . — Thakkar Darshan
– Thakkar Darshan, Commented May 28, 2020 at 12:22
Ok but in this way i have to map from string to object in Java and i want a READY java object. — Matteo Bruni
– Matteo Bruni, Commented May 28, 2020 at 12:25
you have to pass it directly without json string. like argentName. pageSize = // pageNumber = // @MatteoBruni — Ibrahim AlTamimi
– Ibrahim AlTamimi, Commented May 28, 2020 at 12:26
Spring will bind it to PaginationInfoList class. @MatteoBruni — Ibrahim AlTamimi
– Ibrahim AlTamimi, Commented May 28, 2020 at 12:30

Andrei Stoicescu · Accepted Answer · 2020-05-28 12:27:30Z

1

You can bind The request params to an object. In postman you will have 3 params ("agentName", "pageSize" and "pageNumber") and your controller will receive 2 objects

public ResponseEntity<ListResource> getList(@RequestParam("agentName") String agentName,
                                        @Valid PaginationInfoList paginationInfo)

http://dolszewski.com/spring/how-to-bind-requestparam-to-object/

answered May 28, 2020 at 12:27

Andrei Stoicescu

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