Spring swagger: Document request payload

Using @ApiParam annotation, we can document the request payload.

 

Example

@ApiOperation(value = "Create user", notes = "Onboard new user")
@PostMapping
public ResponseEntity<EmployeeCreateRequestDto> infoByName(
		@ApiParam(name = "employeePaylod", required = true) @RequestBody EmployeeCreateRequestDto dto) {

	return new ResponseEntity<>(dto, HttpStatus.CREATED);

}

 

Above snippet generate below swagger documentation.

Find the below working application.

 

Step 1: Create new maven project ‘swagger-document-request-payload’.

 

Step 2: Update pom.xml with maven dependencies.

 

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.sample.app</groupId>
	<artifactId>swagger-document-request-payload</artifactId>
	<version>1</version>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.3.12.RELEASE</version>
	</parent>


	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>


		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
			<version>2.9.2</version>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger-ui</artifactId>
			<version>2.9.2</version>
		</dependency>

	</dependencies>
</project>

 

Step 3: Define SwaggerConfig class.

 

SwaggerConfig.java

 

package com.sample.app.config;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Component
@EnableAutoConfiguration
@EnableSwagger2
public class SwaggerConfig {

	@Bean
	public Docket docketApi() {

		return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).select().paths(PathSelectors.any()).build();
	}

	private ApiInfo apiInfo() {

		return new ApiInfoBuilder().title("Spring boot swagger demo application").description("REST APIs for spring boot service")
				.license("Apache License Version 2.0").licenseUrl("http://www.apache.org/licenses/LICENSE-2.0.html")
				.version("2.0").build();
	}
}

 

Step 4: Define UserController.

 

UserController.java

 

package com.sample.app.controller;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;

@RestController
@RequestMapping(value = "/api/v1/users")
@Api(tags = { "user" })
@CrossOrigin("*")
public class UserController {

	@ApiOperation(value = "Create user", notes = "Onboard new user")
	@PostMapping
	public ResponseEntity<EmployeeCreateRequestDto> infoByName(
			@ApiParam(name = "employeePaylod", required = true) @RequestBody EmployeeCreateRequestDto dto) {

		return new ResponseEntity<>(dto, HttpStatus.CREATED);

	}

	private static class EmployeeCreateRequestDto {
		private String firstName;
		private String lastName;

		public String getFirstName() {
			return firstName;
		}

		public void setFirstName(String firstName) {
			this.firstName = firstName;
		}

		public String getLastName() {
			return lastName;
		}

		public void setLastName(String lastName) {
			this.lastName = lastName;
		}

	}

}

Step 5: Define main application class.

 

App.java

package com.sample.app;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {
	public static void main(String[] args) {

		SpringApplication.run(App.class, args);

	}
}

Total project structure looks like below.

Run App.java.

 

Open the url ‘http://localhost:8080/swagger-ui.html’ to experiment with swagger documentation.

 

You can download complete working application from below link.

https://github.com/harikrishna553/springboot/tree/master/swagger/swagger-document-request-payload

 

 

 

  

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