Question

android 如何获得网络文件大小

Answer 1

public long getFileSize(String urlString) throws IOException,Exception{
long lenght = 0;
String url = UrlEncode(urlString, "UTF-8");
//URL mUrl = new URL(urlString);
URL mUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) mUrl.openConnection();
conn.setConnectTimeout(5*1000);
conn.setRequestMethod("GET");
conn .setRequestProperty("Accept-Encoding", "identity");
conn.setRequestProperty("Referer", url);
//conn.setRequestProperty("Referer", urlString);
conn.setRequestProperty("Charset", "UTF-8");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.connect();

int responseCode = conn.getResponseCode();
// 判断请求是否成功处理
if (responseCode == HttpStatus.SC_OK) {
lenght = conn.getContentLength();
}

return lenght;
}