In REST Assured, how do I solve UnrecognizedPropertyException when mapping response to an object?

I am new to REST Assured API testing, I have already added jackson-databind, jackson-annotations and jackson-core All 2.9.6 versions to the library.

Below is my code:

public class SerializeAndDeserialize {

@Test
public void RegistrationSuccessful()
{

RestAssured.baseURI ="http://restapi.demoqa.com/customer";
RequestSpecification request = RestAssured.given();

JSONObject requestParams = new JSONObject();
requestParams.put("FirstName", "Virkjdender"); // Cast
requestParams.put("LastName", "Scklxjingh");
requestParams.put("UserName", "63userf2d3cn,mxd2011");
requestParams.put("Password", "passwors000mxzmd1");
requestParams.put("Email", "ed26dfdasdf39@gmail.com");


request.body(requestParams.toJSONString());
Response response = request.post("/register");

ResponseBody body = response.getBody();
System.out.println(response.body().asString());
System.out.println(response.contentType());
System.out.println(response.getStatusCode());

if(response.statusCode() == 200)
{
// Deserialize the Response body into RegistrationFailureResponse
RegistrationFailureResponse responseBody = body.as(RegistrationFailureResponse.class);
Assert.assertEquals("User already exists", responseBody.FaultId);
Assert.assertEquals("FAULT_USER_ALREADY_EXISTS", responseBody.fault);
}
else if (response.statusCode() == 201)
{
// Deserialize the Response body into RegistrationSuccessResponse
RegistrationSuccessResponse responseBody = body.as(RegistrationSuccessResponse.class);
Assert.assertEquals("OPERATION_SUCCESS", responseBody.SuccessCode);
Assert.assertEquals("Operation completed successfully", responseBody.Message);
}
}

}


And the related classes are below:

public class RegistrationFailureResponse {
@JsonIgnoreProperties(ignoreUnknown = true)

String FaultId;
String fault;

}


Another one :

public class RegistrationSuccessResponse {
@JsonIgnoreProperties(ignoreUnknown = true)


public String SuccessCode;
public String Message;
}


When I try to run the above code tyhrough Testng.xml file , I get following error:

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "FaultId" (class RegistrationFailureResponse), not marked as ignorable (0 known properties: ])
at [Source: (String)"{
"FaultId": "User already exists",
"fault": "FAULT_USER_ALREADY_EXISTS"
}"; line: 2, column: 17] (through reference chain: RegistrationFailureResponse["FaultId"])
at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:60)
at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:822)
at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:1152)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1589)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1567)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:294)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3042)
at com.fasterxml.jackson.databind.ObjectMapper$readValue$0.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
......

Please help, I googled the solutions but none of it is related to what I am facing here

Possible duplicate of Jackson with JSON: Unrecognized field, not marked as ignorable
– vahdet
Jun 26 at 18:41

1 Answer
1

You should actually not be ignoring unknown properties, because there are none. The response is exactly what you expect:

{
"FaultId": "User already exists",
"fault": "FAULT_USER_ALREADY_EXISTS"
}


But your response class is misconfigured. Try annotating your fields with @JsonProperty.

public class RegistrationFailureResponse {

@JsonProperty private String FaultId;
@JsonProperty private String fault;
}


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