具有@RequestBody的Spring分段文件 [英] Spring Multipart File with @RequestBody

问题描述

我正在尝试将数据从应用程序上传到Spring后端服务. 要上传的内容是一个DataModel，其中包含要创建的对象的数据以及链接到该数据的几个图像. 因此，我正在使用此方法签名:

I am trying to upload data from an app to a spring backend service. Things to upload are a DataModel containing data of the object to create and several images linked to the data. Therefore I am using this method signature:

@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public Survey createSurvey(@RequestBody SurveyPostHelper helper, @RequestParam(value="file", required = true) MultipartFile[] images)

我尝试使用批注，但是要么得到一个空白图像数组，要么我的助手为空. 您将如何解决这个问题?

I tried to play with the annotations, but either I get a blank images array or my helper is empty. How would you solve this?

提前谢谢.

推荐答案

我发现，此方法签名可以完成这项工作:

I found out, that this method signature could do the job:

@ResponseBody
public Survey createSurvey(@RequestPart(required=true) SurveyPostHelper helper, @RequestPart(value="file", required = true) final MultipartFile[] images)

在我的情况下，重要的是在客户端应用程序中设置MimeType.文件MimeType应该为image/jpg，而SurveyPostHelper s为application/json，以允许Spring解析json并将其绑定到我的Object.

Important in my case was to set the MimeType in the client app. The files MimeType should be image/jpg and the SurveyPostHelpers to application/json to allow Spring to parse the json and bind it to my Object.

这篇关于具有@RequestBody的Spring分段文件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！