Question

我想上传一篇带有http帖子的文件。以下方法工作正常但文件大于1GB我得到OutOfMemoryExceptions

我根据AllowWriteStreamBuffering和System.Net.WebRequest找到了一些solutions，但在这种情况下似乎没有帮助，因为我需要用System.Net.WebClient来解决它。

抛出异常时我的应用程序的内存使用量总是大约~500MB

string file = @"C:\test.zip";
string url = @"http://foo.bar";
using (System.Net.WebClient client = new System.Net.WebClient())
{
    using (System.IO.Stream fileStream = System.IO.File.OpenRead(file))
    {
        using (System.IO.Stream requestStream = client.OpenWrite(new Uri(url), "POST"))
        {
            byte[] buffer = new byte[16 * 1024];
            int bytesRead;
            while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) > 0)
            {
                requestStream.Write(buffer, 0, bytesRead);
            }
        }
    }
}

我需要更改哪些内容才能避免此错误？

Answer 1

经过一天的尝试，我找到了解决这个问题的方法。

也许这将有助于未来的访客

$ionicLoading.show();
var datacall=//your call to a data service function using $http to your backend
datacall.$promise.then(function(success){$ionicLoading.hide()},function(err){$ionicLoading.hide()});

扩展string file = @"C:\test.zip"; string url = @"http://foo.bar"; using (System.IO.Stream fileStream = System.IO.File.OpenRead(file)) { using (ExtendedWebClient client = new ExtendedWebClient(fileStream.Length)) { using (System.IO.Stream requestStream = client.OpenWrite(new Uri(url), "POST")) { byte[] buffer = new byte[16 * 1024]; int bytesRead; while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) > 0) { requestStream.Write(buffer, 0, bytesRead); } } } }方法

WebClient

使用System.Net.WebClient

1 个答案: