Question

I use Jersey framework to communicate (marshalling and unmarshalling object and xml) with REST api. I send data (object has lot attributes) this way:

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ClientResponse response = webResource.type("application/xml").post(ClientResponse.class, object);
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I would like to ask how can I validate some object attributes (for example private String code in Object should be in format of two numbers etc.)

Answer 1

aYou mean in the service that receives the object? How have you tried? It comes in as an object, or whatever you want it to come in as. We frequently take in Map<String,Object> and then do validation on that map (if we need to decide what subtype to create from the post for example). If you have Jersey unmarshall your request into the POJO for you, you can then do whatever validation you want and return a Response object with the validation error information to your client if the object doesn’t pass.

So in other words, the validation is up to you. There are a few validation frameworks out there that you could try to help, such as javax.validation but IMHO it’s usually easier to just test each property you need to validate yourself using conditionals, regexps, whatever.