如何在Spring boot中为请求生成JSON值？

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
    </dependency>
</dependencies>

public class MyData {
    private String name;
    private int age;

    // getter and setter methods
}

@RestController
public class MyController {
    @GetMapping("/data")
    public MyData getData() {
        MyData data = new MyData();
        data.setName("John");
        data.setAge(25);
        return data;
    }
}