英文:
(SOLVED) Reading Data from the web in chunks using HttpClient C#
问题
我试图调用网络并以块的形式接收它发送的数据。换句话说，我正在尝试在数据不断到来时从网络接收并打印它，但我找不到包含示例代码的内容。根据我找到的信息，建议在httpClient.SendAsync函数中传递HttpCompletionOption，但之后我不知道该怎么做。
这是我目前的代码：
using (HttpClient httpClient = new HttpClient())
{
using (HttpRequestMessage request = new HttpRequestMessage(new HttpMethod("POST"), url))
{
string content = "{ \"exampleJson\": \"This is an example\" }";
request.Content = new StringContent(content);
request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
HttpResponseMessage httpResponse = await httpClient.SendAsync(request, HttpCompletionOption.ResponseContentRead);
httpResponse.EnsureSuccessStatusCode();
// 但我该如何在数据从网络中不断到来时获取JSON数据？
return;
}
}
但现在，我该如何在数据从网络中不断到来时获取JSON数据？任何帮助将不胜感激。
英文:
I am trying to call the web and receive the data that it send back in chunks. So in other words I am trying to receive from the web and print it, while more data is coming in. But I can not find anything that has code examples in it. What I can find says to pass HttpCompletionOption into the httpClient.SendAsync function but I have no clue what to do after that.
Here is the code that I currently have:
using (HttpClient httpClient = new HttpClient())
{
using (HttpRequestMessage request = new HttpRequestMessage(new HttpMethod("POST"), url))
{
string content = "{ \"exampleJson\": \"This is an example\" }";
request.Content = new StringContent(content);
request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
HttpResponseMessage httpResponse = await httpClient.SendAsync(request, HttpCompletionOption.ResponseContentRead);
httpResponse.EnsureSuccessStatusCode();
// But what do I do to get the json data as it is coming in from the web?
return;
}
}
But now what do I do to get the json data from the web as it is coming in? Any help would be vary appreciated.
答案1
得分: 0
我找到了我需要做的事情。我用这段新代码替换了原来的代码。
// 检查响应是否成功
if (httpResponse.IsSuccessStatusCode)
{
string responseString = "";
// 以块的方式读取响应数据
using (Stream responseStream = await httpResponse.Content.ReadAsStreamAsync())
{
using (StreamReader reader = new StreamReader(responseStream))
{
char[] buffer = new char[4096];
int bytesRead;
while ((bytesRead = await reader.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
responseString += new string(buffer, 0, bytesRead);
Console.WriteLine(responseString);
}
}
}
}
希望这对你有所帮助！
英文:
I found what I needed to do. I replaced this code
// But what do I do to get the json data as it is coming in from the web?
with this new code
// Check if the response is successful
if (httpResponse.IsSuccessStatusCode)
{
string responseString = "";
// Read the response data in chunks
using (Stream responseStream = await httpResponse.Content.ReadAsStreamAsync())
{
using (StreamReader reader = new StreamReader(responseStream))
{
char[] buffer = new char[4096];
int bytesRead;
while ((bytesRead = await reader.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
responseString += new string(buffer, 0, bytesRead);
Console.WriteLine(responseString);
}
}
}
}
I hope this helps you!
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