下载网络文件HttpURLConnection.getContentLength()大小为 0

默认状况下,HttpURLConnection使用gzip方式获取,要取得长度则要求http请求不要gzip压缩; HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestProperty("Accept-Encoding", "identity"); // 添加这行代码 conn.conn

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