springboot实现文件上传的代码实现

好的，以下是Spring Boot实现文件上传的代码实现：

1. 首先需要在pom.xml中引入文件上传相关依赖，如下：

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

<!-- 文件上传依赖 -->
<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>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

2. 在Controller中添加上传文件的接口方法，如下：

@RestController
@RequestMapping("/file")
public class FileUploadController {

    @Autowired
    private FileStorageService fileStorageService;

    @PostMapping("/upload")
    public Response upload(@RequestParam("file") MultipartFile file) {
        String fileName = fileStorageService.storeFile(file);
        String fileDownloadUri = ServletUriComponentsBuilder.fromCurrentContextPath()
                .path("/file/download/")
                .path(fileName)
                .toUriString();
        return new Response(true, "File uploaded successfully", new FileInfo(fileName, fileDownloadUri, file.getContentType(), file.getSize()));
    }
}

3. 在Service中添加文件存储的方法，如下：

@Service
public class FileStorageService {

    @Value("${file.upload-dir}")
    private String uploadDir;

    public String storeFile(MultipartFile file) {
        String fileName = StringUtils.cleanPath(file.getOriginalFilename());
        try {
            if (fileName.contains("..")) {
                throw new FileStorageException("Sorry! Filename contains invalid path sequence " + fileName);
            }
            Path targetLocation = Paths.get(uploadDir + "/" + fileName);
            Files.copy(file.getInputStream(), targetLocation, StandardCopyOption.REPLACE_EXISTING);
            return fileName;
        } catch (IOException ex) {
            throw new FileStorageException("Could not store file " + fileName + ". Please try again!", ex);
        }
    }
}

其中，${file.upload-dir}是在application.properties中配置的文件上传路径。

4. 最后在application.properties中添加文件上传路径的配置，如下：

file.upload-dir=/path/to/upload/directory

以上就是Spring Boot实现文件上传的代码实现。