Questions Management – API Question Service – Build API find question by id using Spring WebFlux

Check out the full series of Questions Management tutorial here.

In the previous tutorial, we prepared all the necessary configurations to build API find question by id: an object containing all the information of a question CompositeQuestion including Question, Category, and Option; a CompositeQuestionService interface with CompositeQuestionServiceImpl implementation is responsible for handling the Composite Question Service, an ApiQuestionController that defines the APIs of the API Question Service will start with “/question” and information about the Composite Question Service is configured in the application.properties file. Now, let’s build this API!

In order to build API find question by id, I would first add a findQuestionById() method in the CompositeQuestionService interface:

with the implementation of this method in the CompositeQuestionServiceImpl class is as follows:

As you can see, here I have used the WebClient object to connect to the Composite Question Service and call the API find question by id of this service with the “/question/{id}” URI.

Next, I will add a method call to the CompositeQuestionService’s findQuestionById() method to expose a GET request “/question/{id}” in ApiQuestionController as follows:

At this point, we have completed the API find question by id for the API Question Service. Let’s try it.

Questions Management – API Question Service – Build API find question by id using Spring WebFlux

Questions Management – API Question Service – Build API find question by id using Spring WebFlux
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