CODEWITHSUNDEEP
javajsonjacksondropwizard
TM00
TM00

Reputation: 1390

Dropwizard deserialize array

I am busy with a Dropwizard application and need to have an array injected to a POJO as one of the parameters of a put method. Unfortunately the array is not properly handled which results in a Bad Request response. To illustrate the JSON passed by the frontend looks like:

{
    "name": "Jon",
    "surname": "Doe",
    "children": ["Chris", "Dave", "Sam"]
}

And my Java representation:

public class Person{

  private String name;
  private String surname;
  private List<String> children;

  public Person(){

  }

  @JsonProperty
  public String getName(){
    return name;
  }


  @JsonProperty
  public void setName(String name){
    this.name=name;
  }

  @JsonProperty
  public String getSurname(){
    return surname;
  }


  @JsonProperty
  public void setsurname(String surname){
    this.surname=surname;
  }

  @JsonProperty
  public List<String> getChildren(){
    return children;
  }


  @JsonProperty
  public void setChildren(List<String> children){
    this.children=children;
  }

}

And in my resource class: 

@PUT
@Timed
@UnitOfWork
@Path("/{userid}")
public Response getData(@PathParam("userid") LongParam userId,
                         Person person) {

    // Do some stuff with the person

}

How can I properly handle the deserialization of the array in the JSON?

EDIT

I am using an angular front-end and I am invoking the method as follows:

function(json){
            return  $http({
                url: API_URL.people+"/update/personID",
                method: "PUT",
                headers: {
                    'Content-Type': 'application/json',
                    'Accept': 'application/json' 
                },
                data: json
            });
}

Where the json argument contains the name, surname and children as above.

Upvotes: 0

Views: 515

Answers (2)

TM00
TM00

Reputation: 1390

Turns out the code I provided words like a charm. Upon further investigation I made a mistake in the javascript object which got converted and sent as JSON which caused the error.

Upvotes: 0

notionquest
notionquest

Reputation: 39196

Looks like the GET service is defined incorrectly. It shouldn't have Person defined.

As per http method definition, the GET http method can't have body. So you can't have Person as the input parameter.

If you need to send Person to service, you may need to change the http method to POST or something else (like PUT) based on your requirement.

@GET
@Timed
@UnitOfWork
@Path("/{userid}")
public Response getData(@PathParam("userid") LongParam userId) {

    // Do some stuff with the person

}

Upvotes: 1

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