Spring Boot - Messaging
Which annotation in Spring Boot helps automatically convert Java objects to JSON in REST responses?
Which annotation in Spring Boot helps automatically convert Java objects to JSON in REST responses?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify annotation for REST response serialization
@ResponseBody tells Spring Boot to convert the returned object into JSON automatically.Step 2: Differentiate from other annotations
@JsonSerialize is for custom serialization, @Entity is for database mapping, @Autowired is for dependency injection.Final Answer:
@ResponseBody -> Option AQuick Check:
Automatic JSON conversion = @ResponseBody [OK]
Quick Trick: Use @ResponseBody to send JSON from controller methods [OK]
Common Mistakes:
- Confusing @JsonSerialize with automatic JSON conversion
- Using @Entity for serialization
- Mixing dependency injection with serialization
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