WPF HTTP請求(GET,POST)
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using
System;
using
System.Collections.Generic;
using
System.IO;
using
System.Linq;
using
System.Net;
using
System.Net.Security;
using
System.Security.Cryptography.X509Certificates;
using
System.Text;
using
System.Threading.Tasks;
namespace
Nova.NovaiCloud.NovaiCloudCareHelper.Common
{
public
class
HttpRequestHelper
{
public
static
string
HttpPost(
string
Url,
string
postDataStr,
ref
bool
isSuccess)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
request.Method =
"POST"
;
request.ContentType =
"application/json"
;
request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
//request.CookieContainer = cookie;
Stream myRequestStream = request.GetRequestStream();
StreamWriter myStreamWriter =
new
StreamWriter(myRequestStream, Encoding.GetEncoding(
"gb2312"
));
myStreamWriter.Write(postDataStr);
myStreamWriter.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
//response.Cookies = cookie.GetCookies(response.ResponseUri);
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader =
new
StreamReader(myResponseStream, Encoding.GetEncoding(
"utf-8"
));
string
retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
return
retString;
}
catch
(Exception e)
{
isSuccess =
false
;
Console.Write(e.Message);
return
e.Message;
}
}
public
string
HttpGet(
string
Url,
string
postDataStr)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr ==
""
?
""
:
"?"
) + postDataStr);
request.Method =
"GET"
;
request.ContentType =
"application/json"
;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader =
new
StreamReader(myResponseStream, Encoding.GetEncoding(
"utf-8"
));
string
retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
return
retString;
}
/// <summary>
/// 創建GET方式的HTTP請求
/// </summary>
//public static HttpWebResponse CreateGetHttpResponse(string url, int timeout, string userAgent, CookieCollection cookies)
public
static
HttpWebResponse CreateGetHttpResponse(
string
url)
{
HttpWebRequest request =
null
;
if
(url.StartsWith(
"https"
, StringComparison.OrdinalIgnoreCase))
{
//對服務端證書進行有效性校驗（非第三方權威機構頒發的證書，如自己生成的，不進行驗證，這里返回true）
ServicePointManager.ServerCertificateValidationCallback =
new
RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url)
as
HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
//http版本，默認是1.1,這里設置為1.0
}
else
{
request = WebRequest.Create(url)
as
HttpWebRequest;
}
request.Method =
"GET"
;
//設置代理UserAgent和超時
//request.UserAgent = userAgent;
//request.Timeout = timeout;
//if (cookies != null)
//{
// request.CookieContainer = new CookieContainer();
// request.CookieContainer.Add(cookies);
//}
return
request.GetResponse()
as
HttpWebResponse;
}
/// <summary>
/// 創建POST方式的HTTP請求
/// </summary>
//public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, int timeout, string userAgent, CookieCollection cookies)
public
static
HttpWebResponse CreatePostHttpResponse(
string
url, IDictionary<
string
,
string
> parameters)
{
HttpWebRequest request =
null
;
//如果是發送HTTPS請求
if
(url.StartsWith(
"https"
, StringComparison.OrdinalIgnoreCase))
{
//ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url)
as
HttpWebRequest;
//request.ProtocolVersion = HttpVersion.Version10;
}
else
{
request = WebRequest.Create(url)
as
HttpWebRequest;
}
request.Method =
"POST"
;
request.ContentType =
"application/json"
;
//設置代理UserAgent和超時
//request.UserAgent = userAgent;
//request.Timeout = timeout;
//if (cookies != null)
//{
// request.CookieContainer = new CookieContainer();
// request.CookieContainer.Add(cookies);
//}
//發送POST數據
if
(!(parameters ==
null
|| parameters.Count == 0))
{
StringBuilder buffer =
new
StringBuilder();
int
i = 0;
foreach
(
string
key
in
parameters.Keys)
{
if
(i > 0)
{
buffer.AppendFormat(
"&{0}={1}"
, key, parameters[key]);
}
else
{
buffer.AppendFormat(
"{0}={1}"
, key, parameters[key]);
i++;
}
}
byte
[] data = Encoding.ASCII.GetBytes(buffer.ToString());
using
(Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
}
string
[] values = request.Headers.GetValues(
"Content-Type"
);
return
request.GetResponse()
as
HttpWebResponse;
}
/// <summary>
/// 獲取請求的數據
/// </summary>
public
static
string
GetResponseString(HttpWebResponse webresponse)
{
using
(Stream s = webresponse.GetResponseStream())
{
StreamReader reader =
new
StreamReader(s, Encoding.UTF8);
return
reader.ReadToEnd();
}
}
/// <summary>
/// 驗證證書
/// </summary>
private
static
bool
CheckValidationResult(
object
sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
if
(errors == SslPolicyErrors.None)
return
true
;
return
false
;
}
}
}
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