.NET HttpHelper

using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Security;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using Newtonsoft.Json;
using System.Net.Http;
using System.Xml;

namespace HttpCore
{
public class HttpAction
{
/// <summary>
/// 发起POST同步请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
/// <param name="headers">填充消息头</param>
/// <returns></returns>
public static string HttpPost(string url, string postData = null, string contentType = "application/json", int timeOut = 30, Dictionary<string, string> headers = null)
{
// 忽略SSL证书验证
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(IgnoreCertificateValidation);
postData = postData ?? "";
using (HttpClient client = new HttpClient())
{
if (headers != null)
{
foreach (var header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
using (HttpContent httpContent = new StringContent(postData, Encoding.UTF8))
{
if (contentType != null)
{
httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);
}
HttpResponseMessage response = client.PostAsync(url, httpContent).Result;
return response.Content.ReadAsStringAsync().Result;
}
}
}

private static bool IgnoreCertificateValidation(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
// 这里总是返回true以忽略证书验证
return true;
}
/// <summary>
/// 发起POST异步请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
/// <param name="headers">填充消息头</param>
/// <returns></returns>
public static async Task<string> HttpPostAsync(string url, string postData = null, string contentType = "application/json", int timeOut = 30, Dictionary<string, string> headers = null)
{
// 忽略SSL证书验证
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(IgnoreCertificateValidation);
postData = postData ?? "";
using (HttpClient client = new HttpClient())
{
client.Timeout = new TimeSpan(0, 0, timeOut);
if (headers != null)
{
foreach (var header in headers)
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
using (HttpContent httpContent = new StringContent(postData, Encoding.UTF8))
{
if (contentType != null)
httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);

HttpResponseMessage response = await client.PostAsync(url, httpContent);
return await response.Content.ReadAsStringAsync();
}
}
}

/// <summary>
/// 发起GET同步请求
/// </summary>
/// <param name="url"></param>
/// <param name="headers"></param>
/// <param name="contentType"></param>
/// <returns></returns>
public static string HttpGet(string url, string contentType = "application/json", Dictionary<string, string> headers = null)
{
// 忽略SSL证书验证
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(IgnoreCertificateValidation);
using (HttpClient client = new HttpClient())
{
if (contentType != null)
client.DefaultRequestHeaders.Add("ContentType", contentType);
if (headers != null)
{
foreach (var header in headers)
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
HttpResponseMessage response = client.GetAsync(url).Result;
return response.Content.ReadAsStringAsync().Result;
}
}

/// <summary>
/// 发起GET异步请求
/// </summary>
/// <param name="url"></param>
/// <param name="headers"></param>
/// <param name="contentType"></param>
/// <returns></returns>
public static async Task<string> HttpGetAsync(string url, string contentType = "application/json", Dictionary<string, string> headers = null)
{
// 忽略SSL证书验证
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(IgnoreCertificateValidation);
using (HttpClient client = new HttpClient())
{
if (contentType != null)
client.DefaultRequestHeaders.Add("ContentType", contentType);
if (headers != null)
{
foreach (var header in headers)
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
HttpResponseMessage response = await client.GetAsync(url);
return await response.Content.ReadAsStringAsync();
}
}

/// <summary>
/// 发起POST同步请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
/// <param name="headers">填充消息头</param>
/// <returns></returns>
public static T HttpPost<T>(string url, string postData = null, string contentType = "application/json", int timeOut = 30, Dictionary<string, string> headers = null)
{
return HttpPost(url, postData, contentType, timeOut, headers).ToEntity<T>();
}

/// <summary>
/// 发起POST异步请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
/// <param name="headers">填充消息头</param>
/// <returns></returns>
public static async Task<T> HttpPostAsync<T>(string url, string postData = null, string contentType = "application/json", int timeOut = 30, Dictionary<string, string> headers = null)
{
var res = await HttpPostAsync(url, postData, contentType, timeOut, headers);
return res.ToEntity<T>();
}

/// <summary>
/// 发起GET异步请求
/// </summary>
/// <param name="url"></param>
/// <param name="headers"></param>
/// <param name="contentType"></param>
/// <returns></returns>
public static async Task<T> HttpGetAsync<T>(string url, string contentType = "application/json", Dictionary<string, string> headers = null)
{
var res = await HttpGetAsync(url, contentType, headers);
return res.ToEntity<T>();
}
}
/// <summary>
/// Json扩展方法
/// </summary>
public static class JsonExtends
{
public static T ToEntity<T>(this string val)
{
return JsonConvert.DeserializeObject<T>(val);
}
public static string ToJson<T>(this T entity, Formatting formatting = Formatting.None)
{
return JsonConvert.SerializeObject(entity, formatting);
}
}
}