此处内容传输都是用UTF-8编码
1.不带参数发送Post请求
/// <summary>
/// 指定Post地址使用Get 方式获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <returns></returns>
public static string Post(string url)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)(url);
= "POST";
HttpWebResponse resp = (HttpWebResponse)();
Stream stream = ();
//获取内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = ();
}
return result;
}2.带参数Post请求,指定键值对
/// <summary>
/// 指定Post地址使用Get 方式获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <returns></returns>
public static string Post(string url,Dictionary<string,string> dic)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)(url);
= "POST";
= "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)
("&");
("{0}={1}", , );
i++;
}
byte[] data = Encoding.(());
= ;
using (Stream reqStream = ())
{
(data, 0, );
();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)();
Stream stream = ();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = ();
}
return result;
}3.带参数的Post请求，指定发送字符串内容
/// <summary>
/// 指定Post地址使用Get 方式获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <param name="content">Post提交数据内容(utf-8编码的)</param>
/// <returns></returns>
public static string Post(string url, string content)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)(url);
= "POST";
= "application/x-www-form-urlencoded";
#region 添加Post 参数
byte[] data = Encoding.(content);
= ;
using (Stream reqStream = ())
{
(data, 0, );
();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)();
Stream stream = ();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = ();
}
return result;
}转载方法：
HttpWebRequest req = (HttpWebRequest)("/transcontent");
Encoding encoding = Encoding.UTF8;
string param = "ie=utf-8&source=txt&query=hello&t=1327829764203&token=8a7dcbacb3ed72cad9f3fb079809a127&from=auto&to=auto";
//(postData);
byte[] bs = (param);
string responseData = ;
= "POST";
= "application/x-www-form-urlencoded";
= ;
using (Stream reqStream = ())
{
(bs, 0, );
();
}
using (HttpWebResponse response = (HttpWebResponse)())
{
using (StreamReader reader = new StreamReader((),encoding))
{
responseData = ().ToString();
}
(responseData);
}4.发送get请求
public static string Get(string Url)
{
//();
HttpWebRequest request = (HttpWebRequest)(Url);
= null;
= false;
= "GET";
= "application/json; charset=UTF-8";
= ;
HttpWebResponse response = (HttpWebResponse)();
Stream myResponseStream = ();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
string retString = ();
();
();
if (response != null)
{
();
}
if (request != null)
{
();
}
return retString;
}5.发送json内容和header设置
private void postjson()
{
string RobotID = ("RobotID");//header
string phoneNumber = ("phoneNumber");
int remainingTime_min = ("remainingTime_min", 0);
string url = ":1800/Robot/WebDeviceInfo";
//Hashtable hash_json = new Hashtable();
//hash_json.Add("phoneNumber", phoneNumber);
//hash_json.Add("remainingTime_min", remainingTime_min);
string hash_json = "{\"phoneNumber\": \"" + phoneNumber + "\",\"remainingTime_min\": " + remainingTime_min + "}";
Hashtable hash_header = new Hashtable();
hash_header.Add("RobotID", RobotID);
(PostJson(url, hash_json.ToString(), hash_header));
();
}
private string PostJson(string url, string postData, Hashtable headht = null)
{
//https的需要加着两行----------------
= ;
= (SecurityProtocolType)192 | (SecurityProtocolType)768 | (SecurityProtocolType)3072;
//------------------
HttpWebRequest request = (HttpWebRequest)(url);
= "POST";
= "application/json;charset=UTF-8";
= "application/json";
#region headers设置
if (headht != null)
{
foreach (DictionaryEntry item in headht)
{
((), ());
}
}
#endregion
byte[] paramJsonBytes;
paramJsonBytes = .(postData);
= ;
Stream writer;
try
{
writer = ();
}
catch (Exception e)
{
writer = null;
("连接服务器失败:" + ());
();
}
(paramJsonBytes, 0, );
();
HttpWebResponse response;
try
{
response = (HttpWebResponse)();
}
catch (WebException ex)
{
response = as HttpWebResponse;
}
Stream resStream = ();
StreamReader reader = new StreamReader(resStream);
string text = ();
return text;
}
6.腾讯文档里的用例：
private const string sContentType = "application/x-www-form-urlencoded";
private const string sUserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
public static string Send(string data, string url)
{
return Send(("UTF-8").GetBytes(data), url);
}
public static string Send(byte[] data, string url)
{
Stream responseStream;
HttpWebRequest request = (url) as HttpWebRequest;
if (request == null)
{
throw new ApplicationException(("Invalid url string: {0}", url));
}
// = sUserAgent;
= sContentType;
= "POST";
= ;
Stream requestStream = ();
(data, 0, );
();
try
{
responseStream = ().GetResponseStream();
}
catch (Exception exception)
{
throw exception;
}
string str = ;
using (StreamReader reader = new StreamReader(responseStream, ("UTF-8")))
{
str = ();
}
();
return str;
}方法调用：
Hashtable hash = new Hashtable();
u = islogin();
if (u != null)
{
string page_url = ("page_url");
WX_About wa = new WX_About();
string access_token = wa.getaccess_token(1);
string url = "/wxa/genwxashortlink?access_token=" + access_token;
string returnStr = ("{\"page_url\": \"" + page_url + "\"}", url);
errorclass errmode = <errorclass>(returnStr);
if ( == 0)
{
hash["error"] = 0;
hash["errorstr"] = "获取成功";
hash["data"] = returnStr;
}
else
{
hash["error"] = 1;
hash["data"] = returnStr;
hash["errorstr"] = "获取失败";
}
}
else
{
hash["error"] = -1;
hash["errorstr"] = "请先登录";
}
((hash));
();传递参数： = "application/x-www-form-urlencoded";
SortedDictionary<string, string> inputPara = new SortedDictionary<string, string>();
("pid", "1017");
("method", "app");
("type", "alipay");
("out_trade_no", orderno);
("notify_url", + "/pay_buyer_back_juhe.aspx");
("return_url", "www");
("name", "订单支付");
("money", ());
("clientip", );//
//("param", "order," + );
("timestamp", getTimestamp_ten());
("sign_type", "RSA");
Dictionary<string, string> sPara = new Dictionary<string, string>();
//过滤空值、sign与sign_type参数
sPara = (inputPara);
//获取待签名字符串
string preSignStr = (sPara);
string sign_get = Sign2(preSignStr, appkey_juhe, "utf-8");
("sign", sign_get);
string prepayXml = Post("/api/pay/create", inputPara); private string Sign2(string dataToSign, string privateKey, string _input_charset)
{
//转换成适用于.Net的秘钥
var netKey = RSAPrivateKeyJava2DotNet(privateKey);
var rsa = new RSACryptoServiceProvider();
(netKey);
//签名返回
using (var sha256 = new SHA256CryptoServiceProvider())
{
var signData = (Encoding.(dataToSign), sha256);
return Convert.ToBase64String(signData);
}
}
private string getTimestamp_ten()
{
long timestamp = (long)( - new DateTime(1970, 1, 1, 0, 0, 0, )).TotalSeconds;
return ().Substring(0, 10);
}private string Post(string url, SortedDictionary<string, string> dic)
{
string postData = "";// "key1=value1&key2=value2";
StringBuilder builder = new StringBuilder();
int i = 0;
foreach (var item in dic)
{
if (i > 0)
("&");
("{0}={1}", , (, Encoding.UTF8));//这个地方要进行编码，否则传不过去
i++;
}
postData = ();
= (SecurityProtocolType)3072;
HttpWebRequest request = (HttpWebRequest)(url);
= "POST";
= "application/x-www-form-urlencoded";
= ;
StreamWriter requestWriter = new StreamWriter((), );
(postData);
();
HttpWebResponse response = (HttpWebResponse)();
StreamReader responseReader = new StreamReader(());
string responseData = ();
();
();
(responseData);
return responseData;
}