TestController And TestDto

TestController

import org.springframework.web.bind.annotation.*;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import javax.validation.Valid;

/**
 * @author Karanbir Singh on 07/23/2020
 */
@RestController
public class TestController {

    @GetMapping("test")
    public Mono<TestDto> getTestDto(final @RequestParam String name,
                              final ServerWebExchange exchange) {
        TestDto testDto = new TestDto();
        testDto.setName(name);
        testDto.setAge(0);
        testDto.setName("Welcome "+name);
        return Mono.just(testDto);
    }

    @PostMapping("test")
    public Mono<TestDto> postTestDto(@Valid @RequestBody final TestDto testDto,
                                     final ServerWebExchange exchange) {
        return Mono.just(testDto);
    }

}

TestDto.java

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;

/**
 * @author Karanbir Singh on 07/23/2020
 */
public class TestDto {

    @NotEmpty
    private String message;

    @NotEmpty
    private String name;

    @NotNull
    private Integer age;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}