servlet文件上传文件名编码

Question

我使用Apache Commons Fileupload工具进行标准文件上传.我的问题是,如果上传文件包含特殊字符(á,é,ú等),我无法获得正确的文件名.它们都被转换为？迹象.

request.getCharacterEncoding()表示UTF-8,但我在字符串fileItem.getName()中得到的字节对于我所有的特殊字符都是相同的.

你能帮我解决什么问题吗？

(一些细节:在Windows上使用Firefox 3.6.12,Weblogic 10.3)

这是我的代码片段:

 public CommandMsg(HttpServletRequest request) {
    Enumeration names = null;
    if (isMultipart(request)) {
      FileItemFactory factory = new DiskFileItemFactory();
      ServletFileUpload upload = new ServletFileUpload(factory);
      try {
        List uploadedItems = upload.parseRequest(request);
        Iterator i = uploadedItems.iterator();
        FileItem fileItem = null;
        while (i.hasNext()) {
          fileItem = (FileItem) i.next();
          if (fileItem.isFormField()) {
            // System.out.println("isFormField");
            setAttribute(fileItem.getFieldName(), fileItem.getString());
          } else {
            String enc = "utf-8";
            enc = request.getCharacterEncoding();
            String fileName = fileItem.getName();
            byte[] fnb = fileItem.getName().getBytes();
            byte[] fnb2 = null;
            try {
                fnb2 = fileItem.getName().getBytes(enc);
                String t1 = new String(fnb);
                String t2 = new String(fnb2);
                String t3 = new String(fnb, enc);
                String t4 = new String(fnb2, enc);
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            setAttribute(fileItem.getFieldName(), fileItem);
          }
        }
      } catch (FileUploadException ex) {
        ex.printStackTrace();
      }

// etc..

Answer 1

我遇到了同样的问题并且像这样解决了.

ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8"); 

FileItemIterator iter = upload.getItemIterator(request);
while (iter.hasNext()) {
    FileItemStream item = iter.next();
    String name = item.getFieldName();
    InputStream stream = item.openStream();
    if (item.isFormField()) {
        String value = Streams.asString(stream, "UTF-8");
    } 
}

如果您的代码基于http://commons.apache.org/fileupload/streaming.html中提供的示例,那么您需要确保在上面的两个位置设置UTF-8.