380 lines
16 KiB
C#
380 lines
16 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.Security;
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using System.Security.Cryptography.X509Certificates;
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using System.Text;
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using System.Threading.Tasks;
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using System.Web;
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namespace EShang.Common
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{
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/// <summary>
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/// 通用的HTTP请求类
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/// </summary>
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public class HttpUtil
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{
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#region 方法 -> HTTP报文请求【POST】
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/// <summary>
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/// HTTP报文请求【POST】
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/// </summary>
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/// <param name="postDataStr">请求参数</param>
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/// <param name="RequestUrl">请求url</param>
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/// <param name="ContentType">资源的媒体类型，默认application/x-www-form-urlencoded</param>
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/// <param name="timeout">超时时间（TCP连接建立的时间和整个请求完成的时间超出了设置的时间，就抛出异常，程序中断）</param>
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/// <param name="securityProtocol">服务器通信的默认安全协议（众马对账通信需使用Tls12,WCF默认通道即可）</param>
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/// <returns></returns>
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public static string HttpUrlPost(string postDataStr, string RequestUrl, string ContentType = "application/x-www-form-urlencoded",
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int timeout = 0, SecurityProtocolType securityProtocol = SecurityProtocolType.SystemDefault)
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{
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try
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{
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CookieContainer cookieContainer = new CookieContainer();
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byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(postDataStr);
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// 设置提交的相关参数
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ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
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HttpWebRequest request = WebRequest.Create(RequestUrl) as HttpWebRequest;
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if (timeout > 0)
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{
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request.Timeout = timeout * 1000;
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}
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request.Method = "POST";
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request.KeepAlive = false;
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request.ContentType = ContentType;
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request.CookieContainer = cookieContainer;
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request.ContentLength = postBytes.Length;
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using (System.IO.Stream reqStream = request.GetRequestStream())
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{
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reqStream.Write(postBytes, 0, postBytes.Length);
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}
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using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
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{
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//在这里对接收到的页面内容进行处理
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//直到request.GetResponse()程序才开始向目标网页发送post请求
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System.IO.Stream responseStream = response.GetResponseStream();
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System.IO.StreamReader reader = new System.IO.StreamReader(responseStream, System.Text.Encoding.GetEncoding("utf-8"));
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string val = reader.ReadToEnd();
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return val;
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}
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}
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catch (Exception ex)
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{
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SuperMap.RealEstate.Utility.ErrorLogHelper.Write(ex, "Post请求", "Post请求：" + postDataStr + "，" + RequestUrl);
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return ex.ToString();
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}
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}
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/// <summary>
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/// HTTP报文请求【POST】
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/// </summary>
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/// <param name="jsonData">报文内容</param>
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/// <param name="url">请求地址</param>
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/// <param name="contentType">资源的媒体类型</param>
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/// <param name="timeoutSeconds">超时时间</param>
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/// <param name="acceptType">请求的接受类型</param>
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/// <param name="headers">请求头</param>
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/// <returns></returns>
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public static string HttpUrlPost(string jsonData, string url, string contentType,
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int timeoutSeconds, string acceptType, Dictionary<string, string> headers)
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{
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try
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{
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// 创建 HttpWebRequest
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
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request.Method = "POST"; // 设置请求方法为 POST
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request.ContentType = contentType; // 设置请求体的 ContentType
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if (!string.IsNullOrWhiteSpace(acceptType))
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{
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request.Accept = acceptType; // 设置请求的接受类型
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}
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else
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{
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request.Accept = "*/*";
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}
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if (string.IsNullOrWhiteSpace(HttpContext.Current.Request.UserAgent))
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{
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request.UserAgent = "Windows Server2012R2;WebApi 4.0";
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}
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else
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{
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request.UserAgent = HttpContext.Current.Request.UserAgent;
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}
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request.Timeout = timeoutSeconds * 1000; // 设置超时时间，单位为毫秒
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// 添加请求头
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if (headers != null)
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{
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foreach (var header in headers)
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{
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request.Headers.Add(header.Key, header.Value);
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}
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}
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// 写入请求体
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using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
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{
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writer.Write(jsonData);
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writer.Flush();
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}
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// 获取响应
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using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
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{
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// 如果请求成功，读取返回内容
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using (StreamReader reader = new StreamReader(response.GetResponseStream()))
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{
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return reader.ReadToEnd();
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}
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}
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}
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catch (WebException ex)
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{
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// 处理错误（如超时、网络错误等）
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using (StreamReader reader = new StreamReader(ex.Response.GetResponseStream()))
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{
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string errorResponse = reader.ReadToEnd();
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return $"Error: {ex.Message}, Response: {errorResponse}";
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}
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}
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catch (Exception ex)
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{
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// 处理其他类型的异常
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return $"Exception: {ex.Message}";
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}
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}
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public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
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{
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return true;
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}
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#endregion
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#region 方法 -> HTTP报文请求【GET】
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/// <summary>
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/// HTTP报文请求【GET】
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/// </summary>
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/// <param name="RequestUrl">请求url</param>
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/// <param name="ContentType">资源的媒体类型，默认application/x-www-form-urlencoded</param>
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/// <param name="timeout">超时时间（TCP连接建立的时间和整个请求完成的时间超出了设置的时间，就抛出异常，程序中断）</param>
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/// <returns></returns>
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public static string HttpUrlGet(string RequestUrl,
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string ContentType = "application/x-www-form-urlencoded", int timeout = 0)
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{
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try
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{
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// 设置提交的相关参数
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ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
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//根据url创建HttpWebRequest对象
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HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(RequestUrl);
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objRequest.Method = "get";
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objRequest.KeepAlive = false;
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objRequest.ContentType = ContentType;
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if (timeout > 0)
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{
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objRequest.Timeout = timeout * 1000;
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}
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//读取服务器返回信息
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HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
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//using作为语句，用于定义一个范围，在此范围的末尾将释放对象
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using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
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{
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//ReadToEnd适用于小文件的读取，一次性的返回整个文件
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string Result = sr.ReadToEnd();
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sr.Close();
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return Result;
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}
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}
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catch (Exception ex)
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{
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SuperMap.RealEstate.Utility.ErrorLogHelper.Write(ex, "Get请求", "Get请求：" + RequestUrl);
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return ex.ToString();
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}
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}
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#endregion
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#region 方法 -> 使用Post form-data方法上传数据、文件
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/// <summary>
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/// 使用Post form-data方法上传数据、文件
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/// </summary>
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/// <param name="url"></param>
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/// <param name="formItems">Post表单内容</param>
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/// <param name="cookieContainer"></param>
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/// <param name="timeOut">默认20秒</param>
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/// <param name="refererUrl">Referer HTTP 标头</param>
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/// <param name="encoding">响应内容的编码类型（默认utf-8）</param>
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/// <returns></returns>
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public static string PostForm(string url, List<Model.FormItemModel> formItems, CookieContainer cookieContainer = null,
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string refererUrl = null, Encoding encoding = null, int timeOut = 20000)
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{
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
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#region 初始化请求对象
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request.Method = "POST";
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request.Timeout = timeOut;
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request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
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request.KeepAlive = true;
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if (string.IsNullOrWhiteSpace(HttpContext.Current.Request.UserAgent))
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{
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request.UserAgent = "Windows Server2012R2;WebApi 4.0";
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}
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else
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{
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request.UserAgent = HttpContext.Current.Request.UserAgent;
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}
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if (!string.IsNullOrEmpty(refererUrl))
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{
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request.Referer = refererUrl;
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}
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if (cookieContainer != null)
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{
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request.CookieContainer = cookieContainer;
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}
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#endregion
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string boundary = "----" + DateTime.Now.Ticks.ToString("x");//分隔符
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request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
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//请求流
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var postStream = new MemoryStream();
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#region 处理Form表单请求内容
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//是否用Form上传文件
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var formUploadFile = formItems != null && formItems.Count > 0;
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if (formUploadFile)
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{
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//文件数据模板
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string fileFormdataTemplate =
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"\r\n--" + boundary +
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"\r\nContent-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"" +
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"\r\nContent-Type: application/octet-stream" +
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"\r\n\r\n";
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//文本数据模板
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string dataFormdataTemplate =
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"\r\n--" + boundary +
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"\r\nContent-Disposition: form-data; name=\"{0}\"" +
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"\r\n\r\n{1}";
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foreach (var item in formItems)
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{
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string formdata = null;
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if (item.IsFile)
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{
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//上传文件
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formdata = string.Format(
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fileFormdataTemplate,
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item.Key, //表单键
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item.FileName);
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}
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else
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{
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//上传文本
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formdata = string.Format(
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dataFormdataTemplate,
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item.Key,
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item.Value);
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}
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//统一处理
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byte[] formdataBytes = null;
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//第一行不需要换行
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if (postStream.Length == 0)
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formdataBytes = Encoding.UTF8.GetBytes(formdata.Substring(2, formdata.Length - 2));
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else
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formdataBytes = Encoding.UTF8.GetBytes(formdata);
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postStream.Write(formdataBytes, 0, formdataBytes.Length);
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//写入文件内容
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if (item.FileContent != null && item.FileContent.Length > 0)
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{
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using (var stream = item.FileContent)
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{
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byte[] buffer = new byte[1024];
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int bytesRead = 0;
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while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) != 0)
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{
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postStream.Write(buffer, 0, bytesRead);
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}
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}
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}
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}
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//结尾
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var footer = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
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postStream.Write(footer, 0, footer.Length);
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}
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else
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{
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request.ContentType = "application/x-www-form-urlencoded";
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}
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#endregion
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request.ContentLength = postStream.Length;
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#region 输入二进制流
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if (postStream != null)
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{
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postStream.Position = 0;
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//直接写入流
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Stream requestStream = request.GetRequestStream();
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byte[] buffer = new byte[1024];
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int bytesRead = 0;
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while ((bytesRead = postStream.Read(buffer, 0, buffer.Length)) != 0)
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{
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requestStream.Write(buffer, 0, bytesRead);
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}
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////debug
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//postStream.Seek(0, SeekOrigin.Begin);
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//StreamReader sr = new StreamReader(postStream);
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//var postStr = sr.ReadToEnd();
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postStream.Close();//关闭文件访问
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}
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#endregion
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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if (cookieContainer != null)
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{
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response.Cookies = cookieContainer.GetCookies(response.ResponseUri);
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}
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using (Stream responseStream = response.GetResponseStream())
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{
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using (StreamReader myStreamReader = new StreamReader(responseStream, encoding ?? Encoding.UTF8))
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{
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string retString = myStreamReader.ReadToEnd();
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return retString;
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}
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}
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}
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#endregion
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#region 方法 -> 请求移动业务的接口
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/// <summary>
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/// 请求移动业务的接口
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/// </summary>
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/// <param name="parameters">URL后面的参数</param>
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/// <returns></returns>
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public static string PostMobileService(string parameters, string provinceCode)
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{
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string reString = "";
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try
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{
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string _BaseUrl = ConfigurationManager.AppSettings[provinceCode];
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string RequestUrl = _BaseUrl + parameters;
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reString = HttpUrlPost(parameters, RequestUrl);
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}
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catch (Exception ex)
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{
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reString = "error:" + ex.Message;
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}
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return reString;
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}
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#endregion
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}
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}
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