[Solved] Given the following Spring Boot controller method, what will be the JSON output when... Given the following Spring Boot controller method, what will be the JSON output when accessing /user? | Spring Boot

Spring Boot - Messaging

Given the following Spring Boot controller method, what will be the JSON output when accessing /user?

public record User(String name, int age) {}

@GetMapping("/user")
public User getUser() {
    return new User("Alice", 30);
}

A["Alice",30]

B{"name":"Alice","age":30}

C{"User":{"name":"Alice","age":30}}

DError: Records cannot be serialized

Step-by-Step Solution

Solution:

Step 1: Understand record serialization in Spring Boot
Spring Boot with Jackson supports Java records and serializes them as JSON objects with field names.
Step 2: Predict output for User record
The record fields 'name' and 'age' become JSON keys with their values.
Final Answer:
{"name":"Alice","age":30} -> Option B
Quick Check:
Records serialize as JSON objects with fields [OK]

Quick Trick: Java records serialize as JSON objects with field names [OK]

Common Mistakes:

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Given the following Spring Boot controller method, what will be the JSON output when accessing /user?