servlet顶用流的方式传输文件

servlet中用流的方式传输文件

servlet服务端接收:

FileOutputStream fileOutputStream = FileUtils.openOutputStream(new File(resultFile));InputStream requestInputStream = request.getInputStream();IOUtils.copy(requestInputStream, fileOutputStream);

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?客户端上传代码：

URL url = new URL(urlStr);HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection();httpUrlConnection.setDoOutput(true);httpUrlConnection.setDoInput(true);httpUrlConnection.setUseCaches(false);httpUrlConnection.setRequestMethod("POST"); httpUrlConnection.setRequestProperty("Content-type", "text/html");httpUrlConnection.setRequestProperty("moduleName", moduleName);httpUrlConnection.setRequestProperty("tdate", tdate);httpUrlConnection.connect();httpOutputStream = httpUrlConnection.getOutputStream();IOUtils.copy(inputStream, httpOutputStream);

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试了一下，上面这个可以用servlet实现文件传输。
想问一下有没有大神知道，这样的方式，文件传输的量能有多大，原理是什么？

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