CODEWITHSUNDEEP
javajsonvalidationjackson
Yordan Borisov
Yordan Borisov

Reputation: 1652

Jackson validate input json object

I have a rest service and if I have a method for an example POST which consume application/json and the argument of the method is another class which describe the fields of the require json is there a way to make jackson to validate the input json before enter the method? Here is a little code : 

@PUT
@Consumes("application/json")
public UserDataResourceObject login(UserResourceObject userResourceObject)
{
    Query query = getEm().createNamedQuery("User.authorize");
    if (userResourceObject == null)
    {
        throw new WebApplicationException(Response.Status.BAD_REQUEST);
    }
    query.setParameter("username", userResourceObject.getUsername());
    query.setParameter("password", Utility.getMD5Value(userResourceObject.getPassword()));
    Exception e = null;
    try
.................

And the UserResourceObject describe this structure : 

{
  "username" : "admin",
  "password" : "123456"
}

I want if I change the structure of the json above jackson to throw me an exception for an example 400 (Bad request). How can I do that?

Upvotes: 0

Views: 3631

Answers (1)

Pablo Gallego Falcón
Pablo Gallego Falcón

Reputation: 938

You can use Bean Validation (JSR 303), to validate the data you receive. You have http://bval.apache.org/ and http://hibernate.org/validator/ implementations.

Then you can do it that way:

@PUT
@Consumes("application/json")
public UserDataResourceObject login(@Valid UserResourceObject userResourceObject) {

Upvotes: 4

Related Questions