String thisurl ="http://songolum.com/file/ppdVkTxqhwcJu-CAzCgtNeICMi8mHZnKQBgnksb5o2Q/Ed%2BSheeran%2B-%2BPerfect.mp3?r=idz&dl=311&ref=ed-sheran-perfect";
url = null;
try {
url = new URL(thisurl);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
try {
// urlConnection.setRequestProperty("Transfer-Encoding", "chunked");
urlConnection.setRequestProperty("Accept-Encoding", "identity");
urlConnection.setDoOutput(true);
urlConnection.setChunkedStreamingMode(0);
int l=0;
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
while(in.read()!=-1)
{
l=l+in.read();
}
System.out.println("Content-length" +l);
**我用其他软件检查过,我发现它是 gzip 压缩文件,它有 10mb,我快 1mb **