using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Web;
using System.Text;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Reflection;
using System.Text.RegularExpressions;
namespace WXCustomerCard.Code {
public class HttpQuery {
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)";
public static void Get(string url, object data, Action<string> callback) {
IDictionary<string, string> parameters = Getparameters(data);
if (!(parameters == null || parameters.Count == 0)) {
url += "?";
foreach (var item in parameters) {
url += item.Key + "=" + item.Value + "&";
}
}
CreateGetHttpResponse(url, null, null, null, callback);
}
public static void Post(string url, object data, Action<string> callback) {
IDictionary<string, string> parameters = Getparameters(data);
CreatePostHttpResponse(url, parameters, null, null, Encoding.UTF8, null, callback);
}
public static void Post(string url, IDictionary<string, string> data, Action<string> callback) {
CreatePostHttpResponse(url, data, null, null, Encoding.UTF8, null, callback);
}
public static void Post(string url, string data, Action<string> callback) {
CreatePostHttpResponse(url, data, null, null, Encoding.UTF8, null, callback);
}
private static IDictionary<string, string> Getparameters(object data) {
if (data == null) {
return new Dictionary<string, string>();
}
IDictionary<string, string> parameters = new Dictionary<string, string>();
Type type = data.GetType();
PropertyInfo[] props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (PropertyInfo p in props) {
parameters.Add(p.Name, p.GetValue(data).ToString());
}
return parameters;
}
/// <summary>
/// 创建GET方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
private static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent,
CookieCollection cookies, Action<string> callback, string encoding = "utf-8") {
if (string.IsNullOrEmpty(url)) {
return null;
//throw new ArgumentNullException("url");
}
try {
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
request.UserAgent = DefaultUserAgent;
if (!string.IsNullOrEmpty(userAgent)) {
request.UserAgent = userAgent;
}
if (timeout.HasValue) {
request.Timeout = timeout.Value;
}
if (cookies != null) {
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cookies);
}
HttpWebResponse httpWebResponse = request.GetResponse() as HttpWebResponse;
StreamReader reader = new StreamReader(httpWebResponse.GetResponseStream(),
System.Text.Encoding.GetEncoding(encoding));
string html = "";
//获取请求到的数据
html = reader.ReadToEnd();
//关闭
httpWebResponse.Close();
reader.Close();
Regex regex = new Regex("charset=(?<code>\w+)"");
Match match = regex.Match(html);
string code = match.Groups["code"].Value;
if (!string.IsNullOrWhiteSpace(code) && code.ToLower() != encoding.ToLower()) {
return CreateGetHttpResponse(url, timeout, userAgent, cookies, callback, code);
} else {
callback(html);
return httpWebResponse;
}
} catch {
callback(null);
}
return null;
}
/// <summary>
/// 创建POST方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="parameters">随同请求POST的参数名称及参数值字典</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
private static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters,
int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies, Action<string> callback) {
if (string.IsNullOrEmpty(url)) {
throw new ArgumentNullException("url");
}
if (requestEncoding == null) {
throw new ArgumentNullException("requestEncoding");
}
HttpWebRequest request = null;
try {
//如果是发送HTTPS请求
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/x-www-form-urlencoded";
if (!string.IsNullOrEmpty(userAgent)) {
request.UserAgent = userAgent;
} else {
request.UserAgent = DefaultUserAgent;
}
if (timeout.HasValue) {
request.Timeout = timeout.Value;
}
if (cookies != null) {
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cookies);
}
//如果需要POST数据
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 = requestEncoding.GetBytes(buffer.ToString());
using (Stream stream = request.GetRequestStream()) {
stream.Write(data, 0, data.Length);
}
}
HttpWebResponse httpWebResponse = request.GetResponse() as HttpWebResponse;
StreamReader reader = new StreamReader(httpWebResponse.GetResponseStream(),
System.Text.Encoding.GetEncoding("utf-8"));
string html = "";
//获取请求到的数据
html = reader.ReadToEnd();
//关闭
httpWebResponse.Close();
reader.Close();
callback(html);
return httpWebResponse;
} catch {
callback(null);
}
return null;
}
private static HttpWebResponse CreatePostHttpResponse(string url, string parameters, int? timeout,
string userAgent, Encoding requestEncoding, CookieCollection cookies, Action<string> callback) {
if (string.IsNullOrEmpty(url)) {
return null;
//throw new ArgumentNullException("url");
}
if (requestEncoding == null) {
throw new ArgumentNullException("requestEncoding");
}
HttpWebRequest request = null;
try {
//如果是发送HTTPS请求
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/x-www-form-urlencoded";
if (!string.IsNullOrEmpty(userAgent)) {
request.UserAgent = userAgent;
} else {
request.UserAgent = DefaultUserAgent;
}
if (timeout.HasValue) {
request.Timeout = timeout.Value;
}
if (cookies != null) {
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cookies);
}
//如果需要POST数据
if (!string.IsNullOrEmpty(parameters)) {
using (var streamWriter = new StreamWriter(request.GetRequestStream())) {
streamWriter.Write(parameters);
streamWriter.Flush();
}
}
HttpWebResponse httpWebResponse = request.GetResponse() as HttpWebResponse;
StreamReader reader = new StreamReader(httpWebResponse.GetResponseStream(),
System.Text.Encoding.GetEncoding("utf-8"));
string html = "";
//获取请求到的数据
html = reader.ReadToEnd();
//关闭
httpWebResponse.Close();
reader.Close();
callback(html);
return httpWebResponse;
} catch {
callback(null);
}
return null;
}
private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain,
SslPolicyErrors errors) {
return true; //总是接受
}
}
}
public JsonResult Orders( ) {
string json = "";
string url = string.Format("www.baidu.com”);
HttpQuery.Get(url, null, msg => {
json = msg;
});
if (json != "") {
return Json(json);
}
return Json("");
}