Android文件下载之断点续传
HttpURLConnection con = null;
long mOffset = 0;
InputStream is = null;
URL url = null;
url = new URL("xxxxxxxxxxx url");
con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
con.setDoInput(true);
//断点续传
con.setRequestProperty("RANGE", "bytes="+ mOffset +"-");
con.setReadTimeout(COM.UPGRADE_TIME_OUT);
con.setConnectTimeout(COM.UPGRADE_TIME_OUT);
is = con.getInputStream();
int len = con.getContentLength();
断点续传的关键在 con.setRequestProperty("RANGE", "bytes="+ mOffset +"-");
当mOffset =0 时获取的文件大小会是原文件大小,若mOffset增加,则返回的文件大小为剩下的字节数。
摘自 wchinaw
补充:移动开发 , Android ,