HttpURLConnection 2m一下的文件无法上传

Question

server端接受文件的代码

out = new FileOutputStream(f, true);
content = req.getInputStream();
int read = 0;
final byte[] bytes = new byte[CommonUtils.BUFFER_LENGTH];
while ((read = content.read(bytes)) != -1)
	out.write(bytes, 0, read);

start = f.length();

客户端代码

HttpURLConnection connection = getConnect(setUrl(fileUploadMap, uploadUrl));
connection.setRequestMethod("POST");
connection.setDoOutput(true);

// pos上回读取传送的位置 blob每次读取多少字节
String range = "bytes " + start + "-" + (start + 153600) + "/" + file.length();
connection.setRequestProperty("content-range", range);

// 获取输出流对象，预备上传文件
OutputStream os = connection.getOutputStream();

FileInputStream fis = new FileInputStream(file);
int count = 0;
if(file.length() > 10240){
	while ((count = fis.read(bytes)) != -1)
		os.write(bytes, 0, count);
}else{
	while((count = fis.read()) != -1)
		os.write(bytes, 0, count);
}
fis.close();
os.flush();

思路分割文件之后按固定字节上传到服务器，服务器会生成一个临时文件，每次上传会先获取token就是临时文件名，包含文件总的大小，可以获取到已保存的大小，给到客户端客户端决定从什么位置开始再次上传，目前分割文件还没做，服务器端是经过网页请求测试大小文件，重新上传都ok的，客户端代码写到了获取token获取再次上传文件的位置以及上传，当测试上传文件的时候发现上传2m一下的文件，客户端debug，outputstream.write的时候有内容，在服务器request.getinputStream获取不到，(read = content.read(bytes)) != -1这里判断直接false了，请问大家这是怎么回事啊？？！！

Answer 1

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public void SteamUpload(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
	doOptions(req, resp);
	InputStream content = null;
	content = req.getInputStream();
	final String token = req.getParameter(CommonUtils.TOKEN_FIELD);
	final String fileName = new String(req.getParameter(CommonUtils.FILE_NAME_FIELD).getBytes("ISO-8859-1"),"utf-8");

搜索看到有说过滤request之后得不到inputstream的，就想试试把request.getinputstream放到最前面，真就就可以了，不清楚为什么，还要再看下servletRequest