老是浪费时间写这个类，干脆记录在博客里：
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Security;
using System.Reflection;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
namespace XiaoDao.Core
{
public class WebRequestHelper
{
private const string userAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36";
#region HttpPost
public static string HttpPost(WebRequestOption options)
{
if (options.SecurityProtocol != SecurityProtocolType.SystemDefault)
{
ServicePointManager.SecurityProtocol = options.SecurityProtocol;
}
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(options.Url);
myRequest.Method = "POST";
if (options.CC != null)
{
myRequest.CookieContainer = options.CC;
}
if (options.Headers.Count > 0)
{
foreach (var item in options.Headers)
{
myRequest.Headers.Add(item.Key, item.Value);
}
}
if (options.ContentType != null)
{
myRequest.ContentType = options.ContentType;
}
else
{
//myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentType = "application/json";
}
myRequest.UserAgent = userAgent;
byte[] payload = null;
string formData = GetFormData(options.Paras);
if (!string.IsNullOrEmpty(formData))
{
payload = Encoding.UTF8.GetBytes(formData);
myRequest.ContentLength = payload.Length;
}
if (options.MyProxy != null)
{
myRequest.Proxy = options.MyProxy;
}
using (Stream mySream = myRequest.GetRequestStream())
{
if (payload != null && payload.Length > 0)
{
mySream.Write(payload, 0, payload.Length);
}
}
try
{
using (HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse())
{
using (StreamReader myReader = new StreamReader(myResponse.GetResponseStream(), options.MyEncoding))
{
string responseText = myReader.ReadToEnd();
return responseText;
}
}
}
catch (Exception ex)
{
options.MyException = ex;
return null;
}
}
public static async Task<string> HttpPostAsync(WebRequestOption options)
{
if (options.SecurityProtocol != SecurityProtocolType.SystemDefault)
{
ServicePointManager.SecurityProtocol = options.SecurityProtocol;
}
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(options.Url);
myRequest.Method = "POST";
if (options.CC != null)
{
myRequest.CookieContainer = options.CC;
}
if (options.Headers.Count > 0)
{
foreach (var item in options.Headers)
{
myRequest.Headers.Add(item.Key, item.Value);
}
}
if (options.ContentType != null)
{
myRequest.ContentType = options.ContentType;
}
else
{
myRequest.ContentType = "application/x-www-form-urlencoded";
//myRequest.ContentType = "application/json";
}
myRequest.UserAgent = userAgent;
byte[] payload = null;
string formData = GetFormData(options.Paras);
if (!string.IsNullOrEmpty(formData))
{
payload = Encoding.UTF8.GetBytes(formData);
myRequest.ContentLength = payload.Length;
}
if (options.MyProxy != null)
{
myRequest.Proxy = options.MyProxy;
}
using (Stream mySream = myRequest.GetRequestStream())
{
if (payload != null && payload.Length > 0)
{
mySream.Write(payload, 0, payload.Length);
}
}
try
{
using (HttpWebResponse myResponse = (HttpWebResponse)await myRequest.GetResponseAsync())
{
using (StreamReader myReader = new StreamReader(myResponse.GetResponseStream(), options.MyEncoding))
{
string responseText = myReader.ReadToEnd();
return responseText;
}
}
}
catch (Exception ex)
{
options.MyException = ex;
return null;
}
}
public static async Task<string> HttpPostJsonAsync(WebRequestOption options)
{
if (options.SecurityProtocol != SecurityProtocolType.SystemDefault)
{
ServicePointManager.SecurityProtocol = options.SecurityProtocol;
}
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(options.Url);
myRequest.Method = "POST";
if (options.CC != null)
{
myRequest.CookieContainer = options.CC;
}
if (options.Headers.Count > 0)
{
foreach (var item in options.Headers)
{
myRequest.Headers.Add(item.Key, item.Value);
}
}
myRequest.ContentType = "application/json";
myRequest.UserAgent = userAgent;
byte[] payload = null;
string jsonData = options.Paras.ToString();
if (!string.IsNullOrEmpty(jsonData))
{
payload = Encoding.UTF8.GetBytes(jsonData);
myRequest.ContentLength = payload.Length;
}
if (options.MyProxy != null)
{
myRequest.Proxy = options.MyProxy;
}
using (Stream mySream = myRequest.GetRequestStream())
{
if (payload != null && payload.Length > 0)
{
mySream.Write(payload, 0, payload.Length);
}
}
try
{
using (HttpWebResponse myResponse = (HttpWebResponse)await myRequest.GetResponseAsync())
{
using (StreamReader myReader = new StreamReader(myResponse.GetResponseStream(), options.MyEncoding))
{
string responseText = myReader.ReadToEnd();
return responseText;
}
}
}
catch(WebException ex)
{
var res = (HttpWebResponse)ex.Response;
using (StreamReader myReader = new StreamReader(res.GetResponseStream(), options.MyEncoding))
{
string responseText = myReader.ReadToEnd();
return responseText;
}
}
catch (Exception ex)
{
options.MyException = ex;
return null;
}
}
#endregion
#region HttpGet
public static string HttpGet(WebRequestOption options)
{
string formData = GetFormData(options.Paras);
if (options.SecurityProtocol != SecurityProtocolType.SystemDefault)
{
ServicePointManager.SecurityProtocol = options.SecurityProtocol;
}
string url = string.IsNullOrEmpty(formData) ? options.Url : options.Url + "?" + formData;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
myRequest.Method = "GET";
if (options.Headers.Count > 0)
{
foreach (var item in options.Headers)
{
myRequest.Headers.Add(item.Key, item.Value);
}
}
if (options.CC != null)
{
myRequest.CookieContainer = options.CC;
}
myRequest.UserAgent = userAgent;
if (url.StartsWith("https://"))
{
//myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentType = "application/json";
}
myRequest.Accept = "*/*";
myRequest.KeepAlive = true;
if (options.MyProxy != null)
{
myRequest.Proxy = options.MyProxy;
}
try
{
using (HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse())
{
using (Stream sResponse = myResponse.GetResponseStream())
{
using (StreamReader myReader = new StreamReader(sResponse, options.MyEncoding))
{
options.Status = myResponse.StatusCode;
string responseText = myReader.ReadToEnd();
return responseText;
}
}
}
}
catch (Exception ex)
{
options.MyException = ex;
return null;
}
}
public static async Task<string> HttpGetAsync(WebRequestOption options)
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
string formData = GetFormData(options.Paras);
if (options.SecurityProtocol != SecurityProtocolType.SystemDefault)
{
ServicePointManager.SecurityProtocol = options.SecurityProtocol;
}
string url = string.IsNullOrEmpty(formData) ? options.Url : options.Url + "?" + formData;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
myRequest.Method = "GET";
if (options.Headers.Count > 0)
{
foreach (var item in options.Headers)
{
myRequest.Headers.Add(item.Key, item.Value);
}
}
if (options.CC != null)
{
myRequest.CookieContainer = options.CC;
}
myRequest.UserAgent = userAgent;
if (url.StartsWith("https://"))
{
//myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentType = "application/json";
}
myRequest.Accept = "*/*";
myRequest.KeepAlive = true;
if (options.MyProxy != null)
{
myRequest.Proxy = options.MyProxy;
}
try
{
using (HttpWebResponse myResponse = (HttpWebResponse)await myRequest.GetResponseAsync())
{
using (Stream sResponse = myResponse.GetResponseStream())
{
using (StreamReader myReader = new StreamReader(sResponse, options.MyEncoding))
{
options.Status = myResponse.StatusCode;
string responseText = myReader.ReadToEnd();
return responseText;
}
}
}
}
catch (Exception ex)
{
options.MyException = ex;
return null;
}
}
#endregion
public static async Task<string> ExecQueryAsync(string url)
{
using (HttpClient httpClient = new HttpClient())
{
HttpResponseMessage response = await httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
string resultStr = await response.Content.ReadAsStringAsync();
return resultStr;
}
}
private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true;
}
#region 帮助方法
public static string GetFormData(object paras)
{
StringBuilder formData = new StringBuilder();
if (paras != null)
{
Type t = paras.GetType();
if (t.Name.Contains("Dictionary"))
{
foreach (KeyValuePair<String, String> kvp in paras as Dictionary<string, string>)
{
if (formData.ToString() == "")
{
formData.Append(kvp.Key + "=" + kvp.Value);
}
else
{
formData.Append("&" + kvp.Key + "=" + kvp.Value);
}
}
}
else if (t.Name == "String")
{
formData.Append(paras.ToString());
}
else
{
foreach (PropertyInfo pi in t.GetProperties())
{
var jsonProperty = pi.CustomAttributes.SingleOrDefault(p => p.AttributeType.FullName == "Newtonsoft.Json.JsonPropertyAttribute");
string name = jsonProperty == null ? pi.Name : jsonProperty.ConstructorArguments[0].Value.ToString();
object val = pi.GetValue(paras, null);
if (formData.ToString() == "")
{
formData.Append(name + "=" + val);
}
else
{
formData.Append("&" + name + "=" + val);
}
}
}
}
return formData.ToString();
}
#endregion
}
public class WebRequestOption
{
public string Url { get; set; }
/// <summary>
/// 可以是匿名对象， 可以是字典
/// </summary>
public object Paras { get; set; }
public Dictionary<string, string> Headers = new Dictionary<string, string>();
public CookieContainer CC { get; set; }
public Encoding MyEncoding { get; set; }
public WebProxy MyProxy { get; set; }
public HttpStatusCode Status { get; set; }
public Exception MyException { get; set; }
public SecurityProtocolType SecurityProtocol { get; set; }
public string ContentType { get; set; }
/// <summary>
/// 没有任何关于SecurityProtocold的默认设置
/// </summary>
public WebRequestOption()
{
if (this.MyEncoding == null)
{
this.MyEncoding = Encoding.UTF8;
}
}
/// <summary>
/// htts协议将默认设置为Tls1.0
/// </summary>
/// <param name="url"></param>
/// <param name="paras"></param>
public WebRequestOption(string url, object paras = null)
{
this.Url = url;
if (paras != null)
{
this.Paras = paras;
}
if (this.MyEncoding == null)
{
this.MyEncoding = Encoding.UTF8;
}
if (this.Url.StartsWith("https") && this.SecurityProtocol == SecurityProtocolType.SystemDefault)
{
this.SecurityProtocol = SecurityProtocolType.Tls12;
}
}
}
}
哈哈，这下爽了