Join Alex Theedom for an in-depth discussion in this video Manage validation failures, part of RESTful Service with JAX-RS 2.0.
- [Instructor] We have seen that when Bean Validation fails…the client will receive a 400 bad request response…from the server.…Now you will learn how to respond to the client…with a far more informative response.…We will discuss two ways to present the client…with a response that identifies the data that has caused…the data integrity violation.…One technique is to respond to the client with a list…of fields that cause the problem…in a custom key value pair HTTP header.…And the other way is to use the response's body…to encapsulate the error response.…Both techniques have their pros and cons.…
And the one you choose largely depends on what suits…your business model and client's requirements.…In either case, it is essential…that you sufficiently document it…so that the front-end developer knows…how to use the error response.…Let's look at the first technique.…Here I am going to suggest one way to handle the response…in the response body.…As there is no accepted convention, you are free…to design your own response.…
Join Alex Theedom as he guides you through a wide range of topics, including how to define resource endpoints, how to add dynamism to your application with hypermedia, how to maintain data integrity with Bean Validation, and how to process messages with the JSON Processing API. Once you have completed this course, you'll be ready to develop your own client and server RESTful APIs.
- Discover the extent of JAX-RS's features
- Use the annotation methodology
- Use the inheritance methodology
- Define a REST contract and API root
- Create the REST resource entity
- Create the REST resource methods
- Understand consumers and producers
- Work with different media types
- Define and work with path parameters
- Build a REST response and handle exceptions
- Implement Bean Validation and manage failures
- Create a RESTful client that consumes the web service
- Use JSON-P API with the REST client
- Implement hypermedia (HATEOAS)
Skill Level Intermediate
1. JAX-RS 2.0
2. Introduction to Bookshop Application
3. Create a REST Resource
4. Responses and HATEOAS
5. Bean Validation API
6. Create a REST Client
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