在Spring Boot中上传PDF文件的步骤如下：
添加文件上传的依赖：在pom.xml文件中添加以下依赖：<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId></dependency><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-rest</artifactId></dependency><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId></dependency><dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-io</artifactId> <version>1.3.2</version></dependency>@RestControllerpublic class FileUploadController { @PostMapping("/upload") public ResponseEntity<String> uploadFile(@RequestParam("file") MultipartFile file) { try { // 保存文件到指定路径 File newFile = new File("uploads/" + file.getOriginalFilename()); file.transferTo(newFile); return ResponseEntity.ok("File uploaded successfully"); } catch (IOException e) { e.printStackTrace(); return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("Error uploading file"); } }}spring.servlet.multipart.max-file-size=10MBspring.servlet.multipart.max-request-size=10MB<!DOCTYPE html><html><head> <title>File Upload</title></head><body> <h1>Upload a PDF file</h1> <form method="post" action="/upload" enctype="multipart/form-data"> <input type="file" name="file"> <button type="submit">Upload</button> </form></body></html>以上就是在Spring Boot中上传PDF文件的步骤，希望对你有所帮助。
