[英]How to use restsharp to download file
我有一個 URL(來自客戶端的實時提要的 URL),當我在瀏覽器中點擊它時會返回 xml 響應。 我已將其保存在文本文件中,它的大小為 8 MB。
現在我的問題是我需要將此響應保存在服務器驅動器上的 xml 文件中。 從那里我將把它插入到數據庫中。 並且需要使用代碼使用 c# .net 4.5 的 http-client 或 rest-sharp 庫進行請求
我不確定我應該為上述案例做什么。 任何機構都可以給我建議嗎
使用 RestSharp,它就在自述文件中:
var client = new RestClient("http://example.com");
client.DownloadData(request).SaveAs(path);
使用HttpClient
,則涉及更多。 看看這篇博文。
另一種選擇是Flurl.Http (免責聲明:我是作者)。 它在HttpClient
使用HttpClient
並提供流暢的界面和許多方便的輔助方法,包括:
await "http://example.com".DownloadFileAsync(folderPath, "foo.xml");
在NuGet上獲取。
似乎 SaveAs 已停止使用。 你可以試試這個
var client = new RestClient("http://example.com")
byte[] response = client.DownloadData(request);
File.WriteAllBytes(SAVE_PATH, response);
如果你想要異步版本
var request = new RestRequest("/resource/5", Method.GET);
var client = new RestClient("http://example.com");
var response = await client.ExecuteTaskAsync(request);
if (response.StatusCode != HttpStatusCode.OK)
throw new Exception($"Unable to download file");
response.RawBytes.SaveAs(path);
閱讀時不要將文件保存在內存中。 直接寫入磁盤。
var tempFile = Path.GetTempFileName();
using var writer = File.OpenWrite(tempFile);
var client = new RestClient(baseUrl);
var request = new RestRequest("Assets/LargeFile.7z");
request.ResponseWriter = responseStream =>
{
using (responseStream)
{
responseStream.CopyTo(writer);
}
};
var response = client.DownloadData(request);
將以下 NuGet 包添加到當前系統中
dotnet 添加包 RestSharp
使用承載認證
// Download file from 3rd party API
[HttpGet("[action]")]
public async Task<IActionResult> Download([FromQuery] string fileUri)
{
// Using rest sharp
RestClient client = new RestClient(fileUri);
client.ClearHandlers();
client.AddHandler("*", () => { return new JsonDeserializer(); });
RestRequest request = new RestRequest(Method.GET);
request.AddParameter("Authorization", string.Format("Bearer " + accessToken),
ParameterType.HttpHeader);
IRestResponse response = await client.ExecuteTaskAsync(request);
if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
// Read bytes
byte[] fileBytes = response.RawBytes;
var headervalue = response.Headers.FirstOrDefault(x => x.Name == "Content-Disposition")?.Value;
string contentDispositionString = Convert.ToString(headervalue);
ContentDisposition contentDisposition = new ContentDisposition(contentDispositionString);
string fileName = contentDisposition.FileName;
// you can write a own logic for download file on SFTP,Local local system location
//
// If you to return file object then you can use below code
return File(fileBytes, "application/octet-stream", fileName);
}
}
使用基本身份驗證
// Download file from 3rd party API
[HttpGet("[action]")]
public async Task<IActionResult> Download([FromQuery] string fileUri)
{
RestClient client = new RestClient(fileUri)
{
Authenticator = new HttpBasicAuthenticator("your user name", "your password")
};
client.ClearHandlers();
client.AddHandler("*", () => { return new JsonDeserializer(); });
RestRequest request = new RestRequest(Method.GET);
IRestResponse response = await client.ExecuteTaskAsync(request);
if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
// Read bytes
byte[] fileBytes = response.RawBytes;
var headervalue = response.Headers.FirstOrDefault(x => x.Name == "Content-Disposition")?.Value;
string contentDispositionString = Convert.ToString(headervalue);
ContentDisposition contentDisposition = new ContentDisposition(contentDispositionString);
string fileName = contentDisposition.FileName;
// you can write a own logic for download file on SFTP,Local local system location
//
// If you to return file object then you can use below code
return File(fileBytes, "application/octet-stream", fileName);
}
}
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