我需要从磁盘读取一堆文件,即时归档它们并发送到从内存流压缩的 Web API。但是每次我收到错误时,在写入所有字节之前都无法关闭流。
如果我将 zip 文件保存到本地磁盘然后打开 FileStream 并将其发送到 WebAPI,我的代码工作正常,但我需要在不保存的情况下即时执行。这是我的代码:
using (MemoryStream mZip = new MemoryStream())
{
using (ZipOutputStream zipOStream = new ZipOutputStream(mZip))
{
foreach (FileInfo fi in allFiles)
{
ZipEntry entry = new ZipEntry((fi.Name));
zipOStream.PutNextEntry(entry);
FileStream fs = File.OpenRead(fi.FullName);
try
{
byte[] transferBuffer = new byte[1024];
int bytesRead = 0;
do
{
bytesRead = fs.Read(transferBuffer, 0, transferBuffer.Length);
zipOStream.Write(transferBuffer, 0, bytesRead);
}
while (bytesRead > 0);
}
finally
{
fs.Close();
}
}
using (var client = new HttpClient(new HttpClientHandler() { Credentials = new NetworkCredential(login, password) }))
{
using (var content = new MultipartFormDataContent())
{
client.BaseAddress = new Uri(AppConfig.ServerApiURL);
var streamContent = new StreamContent(mZip);
streamContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = "Filename.zip", Size = mZip.Length
};
content.Add(streamContent);
var result = client.PostAsync("Log/PostLog", content).Result;
MessageBox.Show(result.StatusCode.ToString());
}
}
}
}
错误
“在写入所有字节之前无法关闭流”
在client.PostAsync("Log/PostLog", content).Result;
If I repalce MemoryStream mZip with FileStream 此代码保存正确的 zip 文件,所以我认为内容长度没有问题。
如果我在发送之前关闭 ZipOutputStream zipOStream,那么 MemoryStream mZip 也会关闭并且无法发送。怎么了?