public string post_urlencoded(string url, string cookies, string postData) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); try { request.Method = "POST"; request.ContentType = "application/x-www-form-urlencoded;"; if (cookies != "") { request.Headers.Add("Cookie", cookies); } // 参数 StreamWriter writer = new StreamWriter(request.GetRequestStream(), Encoding.GetEncoding("EUC-KR")); writer.Write(postData); writer.Close(); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); string encoding = response.ContentEncoding; if (encoding == null || encoding.Length < 1) { encoding = "EUC-KR"; //默认编码 } StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding)); string retString = reader.ReadToEnd(); reader.Close(); reader.Dispose(); response.Close(); response.Dispose(); return retString; } catch (WebException ex) { HttpWebResponse response = (HttpWebResponse)ex.Response; StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("euc-kr")); string retString = reader.ReadToEnd(); return "error"; } finally { if (request != null) { request.Abort(); } } }什么意思
时间: 2024-02-10 11:36:53 浏览: 41
这是一个基于.NET Framework的C#代码片段,用于发送POST请求并获取响应数据。该方法接收三个参数:
- `url`:请求的URL地址。
- `cookies`:请求需要使用的Cookie,如果没有则传空字符串。
- `postData`:请求参数,格式为"x-www-form-urlencoded"。
该方法使用`HttpWebRequest`类来创建POST请求,并在请求头中设置`Content-Type`为`application/x-www-form-urlencoded`来表示请求参数的格式。如果有传入Cookie,则在请求头中添加Cookie信息。然后使用`StreamWriter`类向请求流中写入POST数据,POST数据使用EUC-KR编码。接着发送请求,获取响应数据,判断响应数据的编码格式并使用相应的编码格式解码响应数据。最后返回解码后的响应数据。
如果发生WebException异常,则代表请求失败,此时从异常响应中获取响应数据。如果请求成功,则返回解码后的响应数据,否则返回"error"。
相关问题
public string post_urlencoded(string url, string cookies, string postData) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); try { request.Method = "POST"; request.ContentType = "application/x-www-form-urlencoded;"; if (cookies != "") { request.Headers.Add("Cookie", cookies); } // 参数 StreamWriter writer = new StreamWriter(request.GetRequestStream(), Encoding.GetEncoding("EUC-KR")); writer.Write(postData); writer.Close(); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); string encoding = response.ContentEncoding; if (encoding == null || encoding.Length < 1) { encoding = "EUC-KR"; //默认编码 } StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding)); string retString = reader.ReadToEnd(); reader.Close(); reader.Dispose(); response.Close(); response.Dispose(); return retString; } catch (WebException ex) { HttpWebResponse response = (HttpWebResponse)ex.Response; StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("euc-kr")); string retString = reader.ReadToEnd(); return "error"; } finally { if (request != null) { request.Abort(); } } }改为python 语言
将上述C#代码改写为Python代码,如下所示:
```python
import http.client
import urllib.parse
def post_urlencoded(url, cookies, postData):
headers = {
'Content-type': 'application/x-www-form-urlencoded',
'Cookie': cookies
}
conn = http.client.HTTPConnection(url)
conn.request('POST', '', urllib.parse.urlencode(postData), headers)
response = conn.getresponse()
encoding = response.getheader('Content-Encoding', 'EUC-KR')
retString = response.read().decode(encoding)
conn.close()
return retString
```
注意,Python内置的`http.client`模块可以完成与C#中`HttpWebRequest`类似的HTTP请求操作。在发送POST请求时需要将请求数据进行URL编码,可以使用`urllib.parse.urlencode()`函数完成。同时,Python中的字符串默认使用Unicode编码,所以不需要进行字符编码转换。
httpwebrequest post
好的,您想了解关于使用 C# 的 HttpWebRequest 类发送 POST 请求的方法,是这样吗?如果是的话,以下是一些示例代码:
```csharp
using System;
using System.IO;
using System.Net;
using System.Text;
class Program
{
static void Main(string[] args)
{
string url = "http://example.com/api";
string postData = "param1=value1¶m2=value2";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
request.ContentLength = byteArray.Length;
using (Stream dataStream = request.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
}
using (WebResponse response = request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(responseStream))
{
string responseText = reader.ReadToEnd();
Console.WriteLine(responseText);
}
}
}
}
}
```
这个示例使用 HttpWebRequest 类向指定 URL 发送 POST 请求,并将返回的响应内容输出到控制台。其中,请求的参数通过 postData 变量传递,并且被编码为 application/x-www-form-urlencoded 格式。
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