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這篇文章主要講解了“C#怎么發送Get、Post請求”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“C#怎么發送Get、Post請求”吧！
Get請求
Post請求
1.簡單發送Get請求
/// <summary>
/// 指定Url地址使用Get 方式獲取全部字符串
/// </summary>
/// <param name="url">請求鏈接地址</param>
/// <returns></returns>
public static string Get(string url)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
try
{
//獲取內容
using (StreamReader reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
finally
{
stream.Close();
}
return result;
}2.帶請求參數的Get方法
/// <summary>
/// 發送Get請求
/// </summary>
/// <param name="url">地址</param>
/// <param name="dic">請求參數定義</param>
/// <returns></returns>
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());
//添加參數
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
try
{
//獲取內容
using (StreamReader reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
finally
{
stream.Close();
}
return result;
}3.自定義指定Http請求頭，自定義指定編碼解析返回結果
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "GET";
req.Headers["Accept-Language"] = "zh-CN,zh;q=0.8";
req.Referer = "https://www.baidu.com/";
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
string result = "";
//注意，此處使用的編碼是：gb2312
//using (StreamReader reader = new StreamReader(stream, Encoding.Default))
using (StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("gb2312")))
{
result = reader.ReadToEnd();
}此處內容傳輸都是用UTF-8編碼
1.不帶參數發送Post請求
/// <summary>
/// 指定Post地址使用Get 方式獲取全部字符串
/// </summary>
/// <param name="url">請求后臺地址</param>
/// <returns></returns>
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();
//獲取內容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}2.帶參數Post請求,指定鍵值對
/// <summary>
/// 指定Post地址使用Get 方式獲取全部字符串
/// </summary>
/// <param name="url">請求后臺地址</param>
/// <returns></returns>
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 參數
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();
//獲取響應內容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}3.帶參數的Post請求，指定發送字符串內容
/// <summary>
/// 指定Post地址使用Get 方式獲取全部字符串
/// </summary>
/// <param name="url">請求后臺地址</param>
/// <param name="content">Post提交數據內容(utf-8編碼的)</param>
/// <returns></returns>
public static string Post(string url, string content)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
#region 添加Post 參數
byte[] data = Encoding.UTF8.GetBytes(content);
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();
//獲取響應內容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}轉載方法：
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://fanyi.baidu.com/transcontent");
Encoding encoding = Encoding.UTF8;
string param = "ie=utf-8&source=txt&query=hello&t=1327829764203&token=8a7dcbacb3ed72cad9f3fb079809a127&from=auto&to=auto";
//encoding.GetBytes(postData);
byte[] bs = Encoding.ASCII.GetBytes(param);
string responseData = String.Empty;
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = bs.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(bs, 0, bs.Length);
reqStream.Close();
}
using (HttpWebResponse response = (HttpWebResponse)req.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream(),encoding))
{
responseData = reader.ReadToEnd().ToString();
}
context.Response.Write(responseData);
}感謝各位的閱讀，以上就是“C#怎么發送Get、Post請求”的內容了，經過本文的學習后，相信大家對C#怎么發送Get、Post請求這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！
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