在没有@RequestParam名称的控制器中获取文件 [英] Getting files in controller without @RequestParam name

问题描述

我正在尝试构建通用的POST控制器.我可以通过通用方式访问参数，但是如果不使用@RequestParam("files")MultipartFile []文件就无法获得可能的文件，那么，有人知道如何以通用方式获取文件(如果有提交的话)吗?

I'm trying to build a generic POST controller. I can access params in a generic way but I can't get possible files without using @RequestParam("files") MultipartFile[] files so, does anyone know how to get files (if there are any submitted) in a generic way?

到目前为止，这是我的控制器:

This is my controller so far:

@PostMapping
public void save(@RequestParam MultiValueMap<String, Object> o)   {
    Iterator it = o.keySet().iterator();
    while(it.hasNext()){
        String key = (String) it.next();
        String value = (String) o.getFirst(key);
        System.out.println("Key: " + key + " Value: " + value);
    }
    etc...
}

为了清楚起见，我不想设置(文件")，因为它可以使用任何名称上传.我知道我可以使用@RequestParam，但我不能没有名字.谢谢:)

To be clear, I don't want to set ("files") because it can be uploaded with any name. I know I can use @RequestParam but I can't without a name. Thank you :)

推荐答案

对于想知道如何执行的人:就像注入HttpServletRequest请求并使用

To whoever wants to know how to perform it: It's as easy as to inject HttpServletRequest request and use

Map<String, MultipartFile> multipartFiles = ((MultipartHttpServletRequest) request).getFileMap();
for (Entry<String, MultipartFile> file : multipartFiles.entrySet()) {
    o.put(file.getKey(), file.getValue());
}

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