Spring Web Reactive Framework 多部分文件问题 [英] Spring Web Reactive Framework Multipart File Issue

问题描述

我正在尝试通过以下方式使用 Spring 的 Reactive Framework 实现和图像上传:

I'm trying to implement and image upload using Spring's Reactive Framework by trying the following:

@RestController
@RequestMapping("/images")
public class ImageController {

    @Autowired
    private IImageService imageService;

    @PostMapping(value = "", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    Mono<ImageEntity> saveImage(@RequestBody Mono<FilePart> part) throws Exception{
         return part.flatMap(file -> imageService.saveImage(file));
    }
}

但我不断收到带有以下错误消息的 415:

But I keep getting a 415 with the following error message:

Response status 415 with reason "Content type 'multipart/form-data;boundary=--0b227e57d1a5ca41' not supported\

不确定是什么问题，我按以下方式卷曲 API:

Not sure what the issue is, I'm curling the API the following way:

 curl -v -F "file=@jinyang.gif" -H "Content-Type: multipart/form-data" localhost:8080/images

我尝试了不同的标头和文件变体，结果相同.在这里有点不知所措，因为我过去做过这件事，而且一切似乎都很好.我从这篇文章中看到此功能已合并:

I've tried different variations of headers and files with the same results. Kind of at a loss here because I've done this in the past and things seemed to work okay. I saw from this post that this feature was merged:

如何启用 Spring Reactive Web MVC处理多部分文件?

推荐答案

经过深入研究，我在 Spring WebFlux 项目中找到了这个测试:

After digging around I was able to find this test in the Spring WebFlux project:

https://github.com/spring-projects/spring-framework/blob/master/spring-webflux/src/test/java/org/springframework/web/reactive/结果/方法/注释/MultipartIntegrationTests.java

所以我缺少的部分是控制器定义中的 @RequestPart 而不是 @RequestBody.

So the part I was missing was @RequestPart instead of @RequestBody in the controller definition.

最终代码如下所示:

@RestController
@RequestMapping("/images")
public class ImageController {

    @Autowired
    private IImageService imageService;

    @PostMapping(value = "", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    Mono<ImageEntity> saveImage(@RequestPart("file") Mono<FilePart> part) throws Exception{
         return part.flatMap(file -> imageService.saveImage(file));
    }
}

这篇关于Spring Web Reactive Framework 多部分文件问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！