HttpWebRequest
public static class HttpHelper
{
private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
private static Encoding requestEncoding = Encoding.UTF8;
public static bool HttpGet(string url, out string HttpWebResponseString, int timeout)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebResponseString = "";
try
{
HttpWebRequest httpWebRequest = WebRequest.Create(url) as HttpWebRequest;
httpWebRequest.Method = "GET";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
httpWebRequest.UserAgent = DefaultUserAgent;
httpWebRequest.Timeout = timeout;
HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;
HttpWebResponseString = ReadHttpWebResponse(httpWebResponse);
return true;
}
catch (Exception ex)
{
HttpWebResponseString = ex.ToString();
return false;
}
}
public static bool HttpPost(string url, byte[] Data, out string HttpWebResponseString, int timeout)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebResponseString = "";
HttpWebRequest httpWebRequest = null;
Stream stream = null;
try
{
httpWebRequest = (WebRequest.Create(url) as HttpWebRequest);
httpWebRequest.Method = "POST";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
httpWebRequest.UserAgent = DefaultUserAgent;
httpWebRequest.Timeout = timeout;
if (Data != null)
{
requestEncoding.GetString(Data);
stream = httpWebRequest.GetRequestStream();
stream.Write(Data, 0, Data.Length);
}
HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;
HttpWebResponseString = ReadHttpWebResponse(httpWebResponse);
return true;
}
catch (Exception ex)
{
HttpWebResponseString = ex.ToString();
return false;
}
finally
{
stream?.Close();
}
}
/// <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)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;
}
public static string HttpPost(string url, IDictionary<string, string> parameters, string charset)
{
//StreamWriter sw = new StreamWriter(Application.StartupPath + @"/SyncUrl.log", true, System.Text.Encoding.GetEncoding("gb2312"));
//sw.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + @" " + url);
//sw.Close(); sw.Dispose();
HttpWebRequest req = GetWebRequest(url, "POST");
req.ContentType = "application/json;charset=" + charset;
string p = BuildQuery(parameters, charset);
byte[] postData = Encoding.GetEncoding(charset).GetBytes(p);
Stream reqStream = req.GetRequestStream();
reqStream.Write(postData, 0, postData.Length);
reqStream.Close();
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
return GetResponseAsString(rsp, Encoding.UTF8);
}
public static string HttpPost(string url, IDictionary<string, string> parameters, string charset,string contentType)
{
HttpWebRequest req = GetWebRequest(url, "POST");
req.ContentType = contentType;
string p = BuildQuery(parameters, charset);
byte[] postData = Encoding.GetEncoding(charset).GetBytes(p);
Stream reqStream = req.GetRequestStream();
reqStream.Write(postData, 0, postData.Length);
reqStream.Close();
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
return GetResponseAsString(rsp, Encoding.UTF8);
}
public static string Post(string url, IDictionary<string, string> parameters, string data, string apiToken = null)
{
if (parameters != null && parameters.Count > 0)
{
if (url.Contains("?"))
{
url = url + "&" + BuildQuery(parameters);
}
else
{
url = url + "?" + BuildQuery(parameters);
}
}
HttpWebRequest req = GetWebRequest(url, "POST");
req.ContentType = "application/json;charset=utf-8";
if (!string.IsNullOrEmpty(apiToken))
{
req.Headers.Add("apiToken", apiToken);
}
byte[] postData = Encoding.UTF8.GetBytes(data);
System.IO.Stream reqStream = req.GetRequestStream();
reqStream.Write(postData, 0, postData.Length);
reqStream.Close();
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
return GetResponseAsString(rsp, Encoding.UTF8);
}
public static string sendPost(string url, string json)
{
System.IO.Stream stream = null;
StreamReader reader = null;
try
{
Encoding encoding = Encoding.UTF8;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.Accept = "text/html, application/xhtml+xml, */*";
request.ContentType = "application/json";
byte[] buffer = encoding.GetBytes(json);
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{ return reader.ReadToEnd(); }
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return "{\"FStatus\":0,\"FMsg\":'" + ex.Message + "'}";
}
finally
{
if (stream != null) stream.Close();
if (reader != null) reader.Close();
}
return null;
}
private static HttpWebRequest GetWebRequest(string url, string method)
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.ServicePoint.Expect100Continue = false;
req.Method = method;
req.KeepAlive = true;
req.UserAgent = "SEASHOP";
req.Timeout = 300000;
return req;
}
/// <summary>
/// 把响应流转换为文本。
/// </summary>
/// <param name="rsp">响应流对象</param>
/// <param name="encoding">编码方式</param>
/// <returns>响应文本</returns>
public static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)
{
StringBuilder result = new StringBuilder();
Stream stream = null;
StreamReader reader = null;
try
{
// 以字符流的方式读取HTTP响应
stream = rsp.GetResponseStream();
reader = new StreamReader(stream, encoding);
// 按字符读取并写入字符串缓冲
int ch = -1;
while ((ch = reader.Read()) > -1)
{
// 过滤结束符
char c = (char)ch;
if (c != '\0')
{
result.Append(c);
}
}
}
finally
{
// 释放资源
if (reader != null) reader.Close();
if (stream != null) stream.Close();
if (rsp != null) rsp.Close();
}
return result.ToString();
}
/// <summary>
/// 组装普通文本请求参数。
/// </summary>
/// <param name="parameters">Key-Value形式请求参数字典</param>
/// <returns>URL编码后的请求数据</returns>
public static string BuildQuery(IDictionary<string, string> parameters, string charset)
{
StringBuilder postData = new StringBuilder();
bool hasParam = false;
IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
while (dem.MoveNext())
{
string name = dem.Current.Key;
string value = dem.Current.Value;
// 忽略参数名或参数值为空的参数
if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
{
if (hasParam)
{
postData.Append("&");
}
postData.Append(name);
postData.Append("=");
string encodedValue = HttpUtility.UrlEncode(value, Encoding.GetEncoding(charset));
postData.Append(encodedValue);
hasParam = true;
}
}
return postData.ToString();
}
public static string ReadHttpWebResponse(HttpWebResponse HttpWebResponse)
{
Stream stream = null;
StreamReader streamReader = null;
#pragma warning disable CS0219 // 变量“text”已被赋值，但从未使用过它的值
string text = null;
#pragma warning restore CS0219 // 变量“text”已被赋值，但从未使用过它的值
try
{
stream = HttpWebResponse.GetResponseStream();
streamReader = new StreamReader(stream, Encoding.GetEncoding("utf-8"));
return streamReader.ReadToEnd();
}
catch (Exception ex)
{
throw ex;
}
finally
{
streamReader?.Close();
stream?.Close();
HttpWebResponse?.Close();
}
}
public static string BuildQuery(IDictionary<string, string> parameters)
{
StringBuilder postData = new StringBuilder();
bool hasParam = false;
IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
while (dem.MoveNext())
{
string name = dem.Current.Key;
string value = dem.Current.Value;
// 忽略参数名或参数值为空的参数
if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
{
if (hasParam)
{
postData.Append("&");
}
postData.Append(name);
postData.Append("=");
postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));
hasParam = true;
}
}
return postData.ToString();
}
}
HttpWebRequest