How to implement multiple file uploads based on Swagger 3.x in Spring boot 3.x

Project

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>3.2.3</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.qwfys.sample</groupId><artifactId>upload-sample</artifactId><version>0.0.1-SNAPSHOT</version><name>upload-sample</name><description>upload-sample</description><properties><java.version>17</java.version><swagger.starter.version>1.9.1.RELEASE</swagger.starter.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>        <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springdoc</groupId><artifactId>springdoc-openapi-starter-webmvc-ui</artifactId><version>2.0.3</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><excludes><exclude><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></exclude></excludes></configuration></plugin></plugins></build></project>

OpenAPIConfig

package com.qwfys.sample.upload.base.config;import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Contact;
import io.swagger.v3.oas.models.info.Info;
import io.swagger.v3.oas.models.info.License;
import io.swagger.v3.oas.models.servers.Server;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.List;@Configuration
public class OpenAPIConfig {@Value("${app.openapi.dev-url}")private String devUrl;@Value("${app.openapi.prod-url}")private String prodUrl;@Beanpublic OpenAPI myOpenAPI() {Server devServer = new Server();devServer.setUrl(devUrl);devServer.setDescription("Server URL in Development environment");Server prodServer = new Server();prodServer.setUrl(prodUrl);prodServer.setDescription("Server URL in Production environment");Contact contact = new Contact();contact.setEmail("[e-mail]");contact.setName("qwfys200");contact.setUrl("https://www.qwfys.com");License mitLicense = new License().name("MIT License").url("https://choosealicense.com/licenses/mit/");Info info = new Info().title("Tutorial Management API").version("1.0").contact(contact).description("This API exposes endpoints to manage tutorials.").termsOfService("https://www.bezkoder.com/terms").license(mitLicense);return new OpenAPI().info(info).servers(List.of(devServer, prodServer));}
}

FileUploadController

package com.qwfys.sample.upload.controller;import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;@Tag(name = "Tutorial", description = "Tutorial management APIs")
@RestController
public class FileUploadController {private static final Logger logger = LoggerFactory.getLogger(FileUploadController.class);@RequestMapping(value = "/uploadMultiFiles", consumes = {"multipart/form-data"}, method = RequestMethod.POST)public String uploads(@RequestPart(required = true) MultipartFile[] files) {logger.info("File Upload:{}", files);return "sucessfull";}@RequestMapping(value = "/uploadMultiFile", consumes = {"multipart/form-data"}, method = RequestMethod.POST)public String uploads(@RequestPart(required = true) MultipartFile file) {logger.info("File Upload:{}", file);return "sucessfull";}
}

application.yaml

spring:servlet:multipart:max-file-size: 5MBmax-request-size: 5MBenabled: truelocation: ${java.io.tmpdir}app:openapi:dev-url: http://localhost:8080prod-url: https://api.qwfys.com/sample

参考文献

• Manage upload/download of files using REST and Spring Boot
• Spring Boot File upload example with Multipart File
• Spring Boot + Swagger 3 example (with OpenAPI 3)
• Swagger 3 annotations in Spring Boot
• Setting up Swagger 3 With Spring Boot
• Springfox Reference Documentation
• How to run Swagger 3 on Spring Boot 3
• Swagger UI 3 Setup with Spring Boot Application
• Uploading Multiple Files with Springfox and Swagger-UI
• Spring Boot Example for Uploading Swagger Files