我使用HttpURLConnection的这需要大约3秒,以用于所有的头一个5MB的文件上传的图像文件,但我打开与.getInputStream()的InputStream的那一刻,该方法需要大约8+秒返回流用。这是一个问题,因为如果我有多个上传图片,上传进度条会给用户带来不好的用户体验,他们在每次上传之间会有相当大的停顿时间,因此进度条仅停留在上传之间几秒钟。我做了一些Google搜索,但没有人似乎有问题呢?HTTPURLConnection.getInputStream()需要很长时间?
通常我会假定服务器是缓慢的,但看到上载只需要几秒钟,下载单词“成功”或“失败”真的不应该是太大的问题的!
继承人一些代码!我最初是否设置了错误? 注:这是又一个的AsyncTask内
ByteArrayInputStream fileInputStream = null;
try {
fileInputStream = new ByteArrayInputStream(dObject.Data);
} catch (Exception e) {
e.printStackTrace();
}
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
String Tag="3rd";
try
{
//------------------ CLIENT RE QUEST
Log.e(Tag,"Inside second Method");
// Open a HTTP connection to the URL
URL url = new URL(_urlString);
//connectURL is a URL object
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
//dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + _fileLocation +"\"" + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"file\";filename=\"" + _fileLocation +"\"" + lineEnd);
dos.writeBytes(lineEnd);
Log.e(Tag,"Headers are written");
// create a buffer of maximum size
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
//int value = (int)(((float)((float)totalRead/(float) fileSize)) * 100);
totalRead += bytesRead;
//Publish the progress out to be displayed
publishProgress(totalRead);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
Log.e(Tag,"File is written");
fileInputStream.close();
dos.flush();
Log.e("TIME", "PRE GETINPUTSTREAM");
InputStream is = conn.getInputStream();
Log.e("TIME", "POST GETINPUTSTREAM");
// retrieve the response from server
int ch;
//Build the respose and log
StringBuilder b =new StringBuilder();
while((ch = is.read()) != -1){
b.append((char)ch);
}
String s=b.toString();
Log.i("Response",s);
dos.close();
return;
}
catch (MalformedURLException ex)
{
ErrorHandler.get().e("3");
}
catch (IOException ioe)
{
ErrorHandler.get().e("2");
}
事实上它的服务器正在缓慢其实..我已经受够了说“上传”,而上传,然后显示具有不确定进度栏的‘敲定’在等待掰过来服务器响应!我认为我的公司应该升级主机! – Micky