android 网络下载获取文件大小
16lz
2022-03-14
HttpURLConnection conn = (HttpURLConnection) url.openConnection();//建立连接
conn.setConnectTimeout(6*1000);
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept-Language", "zh-CN");
conn.setRequestProperty("Referer", downloadUrl);
conn.setRequestProperty("Charset", "UTF-8");
conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");
conn.connect();
if (conn.getResponseCode()==200) {
this.fileSize = conn.getContentLength();
if (this.fileSize <= 0) throw new RuntimeException("1无法获知文件大小 ");
fileSize就是获得的网络文件大小
conn.setConnectTimeout(6*1000);
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept-Language", "zh-CN");
conn.setRequestProperty("Referer", downloadUrl);
conn.setRequestProperty("Charset", "UTF-8");
conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");
conn.connect();
if (conn.getResponseCode()==200) {
this.fileSize = conn.getContentLength();
if (this.fileSize <= 0) throw new RuntimeException("1无法获知文件大小 ");
fileSize就是获得的网络文件大小
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