C# Http下载指定文件存储到特定目录,下面是标准用法代码:
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///
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/// Http下载文件:下载指定文件存储到特定目录
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///
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public static string HttpDownloadFile(string remoteUrl)
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{
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// 设置参数
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HttpWebRequest request = WebRequest.Create(remoteUrl) as HttpWebRequest;
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//发送请求并获取相应回应数据
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HttpWebResponse response = request.GetResponse() as HttpWebResponse;
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//直到request.GetResponse()程序才开始向目标网页发送Post请求
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Stream responseStream = response.GetResponseStream();
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string localPath = AppDomain.CurrentDomain.BaseDirectory + @"QRCode\MyQRCode.jpg";
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//创建本地文件写入流
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Stream stream = new FileStream(localPath, FileMode.Create);
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byte[] bArr = new byte[1024];
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int size = responseStream.Read(bArr, 0, (int)bArr.Length);
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while (size > 0)
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{
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stream.Write(bArr, 0, size);
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size = responseStream.Read(bArr, 0, (int)bArr.Length);
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}
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stream.Close();
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responseStream.Close();
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return localPath;
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}
remoteUrl值说明:
remoteUrl的值举例
上面的URL值放到浏览器是可以直接打开文件的:
运行效果:
参考文献:
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