apache.commons.fileupload 抛出 MalformedStreamException

Question

我有这段代码（我没有写，只是维护）：

public class MyMultipartResolver extends CommonsMultipartResolver{    
  public List parseEmptyRequest(HttpServletRequest request) throws IOException, FileUploadException {
            String contentType = request.getHeader(CONTENT_TYPE);
            int boundaryIndex = contentType.indexOf("boundary=");

            InputStream input = request.getInputStream();

            byte[] boundary = contentType.substring(boundaryIndex + 9).getBytes();
            MultipartStream multi = new MultipartStream(input, boundary);
            multi.setHeaderEncoding(getHeaderEncoding());

            ArrayList items = new ArrayList();
            boolean nextPart = multi.skipPreamble();
            while (nextPart) {
                Map headers = parseHeaders(multi.readHeaders());
               // String fieldName = getFieldName(headers);

                String subContentType = getHeader(headers, CONTENT_TYPE);
                if (subContentType == null) {
                    FileItem item = createItem(headers, true);
                    OutputStream os = item.getOutputStream();
                    try {
                        multi.readBodyData(os);
                    } finally {
                        os.close();
                    }
                    items.add(item);
                } else {
                    multi.discardBodyData();
                }

                nextPart = multi.readBoundary();
            }

            return items;
        }
}

我正在使用 commons-fileupload.jar 版本 1.2.1 ，显然代码正在使用一些已弃用的方法...
无论如何，在尝试使用此代码上传一个非常大的文件（780 MB）时，我得到了这个：

org.apache.commons.fileupload.MultipartStream$MalformedStreamException: Stream ended unexpectedly
    at org.apache.commons.fileupload.MultipartStream$ItemInputStream.makeAvailable(MultipartStream.java:983)
    at org.apache.commons.fileupload.MultipartStream$ItemInputStream.read(MultipartStream.java:887)
    at java.io.InputStream.read(InputStream.java:89)
    at org.apache.commons.fileupload.util.Streams.copy(Streams.java:94)
    at org.apache.commons.fileupload.util.Streams.copy(Streams.java:64)
    at org.apache.commons.fileupload.MultipartStream.readBodyData(MultipartStream.java:593)
    at org.apache.commons.fileupload.MultipartStream.discardBodyData(MultipartStream.java:619)

这是从 'multi.discardBodyData();' 抛出的线。
我的问题： 如何避免此错误并能够成功收集 FileItems？

Answer 1

catch

(org.apache.commons.fileupload.MultipartStream.MalformedStreamException e)
        {

            e.printStackTrace();

            return ERROR;
        }

捕获异常并通过 InputStream 或 Return Error 处理它 在 struts 操作标记中使用它