How can you correctly add a custom header X-Trace-Id with value 12345 to a Spring Boot controller response using ResponseEntity?

easy📝 Syntax Q3 of 15

Spring Boot - Request and Response Handling

How can you correctly add a custom header X-Trace-Id with value 12345 to a Spring Boot controller response using ResponseEntity?

Areturn ResponseEntity.ok().header("X-Trace-Id", "12345").body("data");

Breturn ResponseEntity.body("data").header("X-Trace-Id", "12345");

Creturn ResponseEntity.header("X-Trace-Id", "12345").body("data");

Dreturn ResponseEntity.ok().body("data").header("X-Trace-Id", "12345");

Step-by-Step Solution

Solution:

Step 1: Use ResponseEntity builder
ResponseEntity.ok() returns a builder to set headers and body.
Step 2: Add header before body
Headers must be set before calling body() method.
Final Answer:
return ResponseEntity.ok().header("X-Trace-Id", "12345").body("data"); -> Option A
Quick Check:
Headers set before body() call [OK]

Quick Trick: Set headers before body() in ResponseEntity builder [OK]

Common Mistakes:

Master "Request and Response Handling" in Spring Boot

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Spring Boot Quizzes