1、不带参数的POST请求
public static string Post( string url)
{
string result = "" ;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST" ;
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
2、带参数的POST请求
public static string Post( string url,Dictionary< string , string > dic)
{
string result = "" ;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST" ;
req.ContentType = "application/x-www-form-urlencoded" ;
#region 添加Post 参数
StringBuilder builder = new StringBuilder();
int i = 0;
foreach (var item in dic)
{
if (i > 0)
builder.Append( "&" );
builder.AppendFormat( "{0}={1}" , item.Key, item.Value);
i++;
}
byte [] data = Encoding.UTF8.GetBytes(builder.ToString());
req.ContentLength = data.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
reqStream.Close();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
3、不带参数的GET请求
public static string Get( string url)
{
string result = "" ;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
try
{
//获取内容
using (StreamReader reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
finally
{
stream.Close();
}
return result;
}
4、带参数的GET请求
public static string Get( string url, Dictionary< string , string > dic)
{
string result = "" ;
StringBuilder builder = new StringBuilder();
builder.Append(url);
if (dic.Count > 0)
{
builder.Append( "?" );
int i = 0;
foreach (var item in dic)
{
if (i > 0)
builder.Append( "&" );
builder.AppendFormat( "{0}={1}" , item.Key, item.Value);
i++;
}
}
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(builder.ToString());
//添加参数
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
try
{
//获取内容
using (StreamReader reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
finally
{
stream.Close();
}
return result;
}
5、自定义HTTP请求头
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "GET" ;
req.Headers[ "Accept-Language" ] = "zh-CN,zh;q=0.8" ;
req.Referer = "https://HdhCmsTestbaidu测试数据/" ;
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream(); string result = "" ; //注意，此处使用的编码是：gb2312 //using (StreamReader reader = new StreamReader(stream, Encoding.Default)) using (StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("gb2312")))
{
result = reader.ReadToEnd();
}
原文链接：https://blog.csdn.net/xishining/article/details/80809747
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