Spring WebFlux：设置上传文件的最大文件大小

Question

我正在使用 FileParts 的流量来上传文件@RequestPart(FILES) Flux<FilePart> files

并尝试限制文件的最大大小。看起来旧方法不起作用：

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

而且我没有任何方法可以在 FilePart 界面中获取文件大小。那么有什么方法可以限制 webflux 中上传文件的最大大小，而不复制它？我知道有 headers 像 Content-Length，但它看起来不安全。

Answer 1

Web on Reactive Stack documentation 声明如下：

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.

我能够通过此配置应用它 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);
    }

}

Spring WebFlux：设置上传文件的最大文件大小

Spring WebFlux: set max file(s) size for uploading files

java

upload

spring

file-upload

spring-webflux