問題描述

我正在使用 FileParts 的 Flux 來上傳文件 @RequestPart(FILES) Flux<FilePart>文件

I'm using flux of FileParts to upload files @RequestPart(FILES) Flux<FilePart> files

并試圖限制文件的最大大小.看起來舊方法不起作用:

And trying to limit maximum size of files. Looks like old way does not work:

spring.servlet.multipart.max-file-size=1MB
spring.servlet.multipart.max-request-size=1MB

而且我沒有任何方法可以在 FilePart 界面中獲取文件大小.那么有什么方法可以限制 webflux 中上傳文件的最大大小，而不復制它?我知道有像 Content-Length 這樣的標頭，但它看起來并不安全.

And I dont have any methods to get file size in FilePart interface. So is ther any way to limit max size of uploaded file in webflux, whithout copying it? I know that there are headers like Content-Length, but it does not look secure way.

推薦答案

Web on Reactive Stack 文檔 聲明如下:

對于寫入磁盤的文件部分，有一個額外的 maxDiskUsagePerPart 屬性來限制每個部分的磁盤空間量.還有一個 maxParts 屬性來限制多部分請求中的部分總數.要在 WebFlux 中配置所有 3 個，您需要向 ServerCodecConfigurer 提供一個預配置的 MultipartHttpMessageReader 實例.

For file parts written to disk, there is an additional maxDiskUsagePerPart property to limit the amount of disk space per part. There is also a maxParts property to limit the overall number of parts in a multipart request. To configure all 3 in WebFlux, you’ll need to supply a pre-configured instance of MultipartHttpMessageReader to ServerCodecConfigurer.

我可以通過這個配置類來應用它:

I was able to apply it via this configuration class:

@Configuration
@EnableWebFlux
public class WebConfig implements WebFluxConfigurer {

    @Override
    public void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
        SynchronossPartHttpMessageReader partReader = new SynchronossPartHttpMessageReader();
        partReader.setMaxParts(1);
        partReader.setMaxDiskUsagePerPart(10L * 1024L);
        partReader.setEnableLoggingRequestDetails(true);

        MultipartHttpMessageReader multipartReader = new MultipartHttpMessageReader(partReader);
        multipartReader.setEnableLoggingRequestDetails(true);

        configurer.defaultCodecs().multipartReader(multipartReader);
    }

}

這篇關于Spring WebFlux:設置上傳文件的最大文件大小的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！