Bird
0
0

How can you combine @RequestBody with validation annotations to validate JSON input automatically?

hard📝 Application Q9 of 15
Spring Boot - REST Controllers
How can you combine @RequestBody with validation annotations to validate JSON input automatically?
AValidation is automatic without extra annotations
BUse @RequestParam with validation annotations
CAdd @Valid before @RequestBody parameter and use validation annotations in the model
DAdd @Validated on the controller class only
Step-by-Step Solution
Solution:

  1. Step 1: Understand validation with @RequestBody

    Adding @Valid before the @RequestBody parameter triggers validation of the JSON mapped object.

  2. Step 2: Use validation annotations in model

    Annotations like @NotNull in the User class define validation rules.

  3. Final Answer:

    Add @Valid before @RequestBody parameter and use validation annotations in the model -> Option C

  4. Quick Check:

    @Valid + @RequestBody triggers validation [OK]
Quick Trick: Use @Valid before @RequestBody to enable validation [OK]
Common Mistakes:
  • Using @RequestParam instead of @RequestBody for validation
  • Assuming validation works without @Valid
  • Only annotating controller class without @Valid on parameter

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Spring Boot Quizzes
Application Configuration - application.yml alternative - Quiz 6medium Application Configuration - Why configuration matters - Quiz 4medium Inversion of Control and Dependency Injection - IoC container mental model - Quiz 14medium Inversion of Control and Dependency Injection - Bean concept in Spring - Quiz 3easy Inversion of Control and Dependency Injection - Bean lifecycle overview - Quiz 5medium Inversion of Control and Dependency Injection - @Autowired for dependency injection - Quiz 9hard Inversion of Control and Dependency Injection - Bean concept in Spring - Quiz 10hard REST Controllers - @PostMapping for POST requests - Quiz 7medium REST Controllers - @RequestMapping for base paths - Quiz 4medium Request and Response Handling - Returning different status codes - Quiz 9hard