如何使用嵌入式tomcat在spring boot中增加文件大小上传限制

Question

“超出最大上载大小；嵌套异常为java.lang.IllegalStateException：org.apache.tomcat.util.http.fileupload.impl.FilesizeLimitExprojededException：字段文件超出其最大允许大小1048576字节。”

我已经在我的文件中尝试了以下代码，但每次我都得到错误

1.申请。财产

spring.servlet.multipart.FileSizeThreshold=100MB

spring.servlet.multipart.max-file-size=100MB

spring.servlet.multipart.max-request-size=100MB

public RestDTO uploadFile(MultipartFile file, String subPath) {

    if (file.isEmpty()) {
        return new RestFailure("Failed to store empty file");
    }

    try {
        String fileName = new Date().getTime() + "_" + file.getOriginalFilename();
        String filePath = uploadPath + subPath + fileName;
        if (Objects.equals(file.getOriginalFilename(), "blob")) {
            filePath += ".png";
            fileName += ".png";
        }
        File uploadDir = new File(uploadPath + subPath);
        if (!uploadDir.exists()) {
            uploadDir.mkdirs();
        }
        FileOutputStream output = new FileOutputStream(filePath);
        output.write(file.getBytes());
        LOGGER.info("File path : " + filePath);

        MediaInfoDTO mediaInfoDTO = getThumbnailFromVideo(subPath, fileName);

        String convertedFileName = convertVideoToMP4(subPath, fileName);

        System.out.println("---------------->" + convertedFileName);

        return new RestData<>(new MediaDetailDTO(mediaInfoDTO.getMediaPath(), convertedFileName,
                mediaInfoDTO.getMediaType(), mediaInfoDTO.getMediaCodec(), mediaInfoDTO.getWidth(),
                mediaInfoDTO.getHeight(), mediaInfoDTO.getDuration()));
    } catch (IOException e) {
        LOGGER.info("Can't upload file: " + e.getMessage());
        return new RestFailure("Failed to store empty file");
    }
}

但每次我都有同样的例外。

Answer 1

除了comment，我建议为工厂创建@beanMultipartConfigurationElement，这基本上应该覆盖TomCat端的其他限制。

java prettyprint-override">@Bean
public MultipartConfigElement multipartConfigElement() {
    MultipartConfigFactory factory = new MultipartConfigFactory();
    factory.setMaxFileSize(DataSize.ofBytes(100000000L));
    factory.setMaxRequestSize(DataSize.ofBytes(100000000L));
    return factory.createMultipartConfig();
}

这里datasize的类型为org.springframework.util.unit.datasize

参考https://github.com/spring-projects/spring-boot/issues/11284