调用接口，数据请求（公共方法）

悠悠 2023-08-17 16:18 33阅读 0赞

1 using System;
      2 using System.Collections.Generic;
      3 using System.Linq;
      4 using System.Text;
      5 using System.Threading.Tasks;
      6 using System.Web;
      7 using System.Net;
      8 using System.IO;
      9 using System.Security.Cryptography.X509Certificates;
     10 using System.Security.Authentication;
     11 using System.Net.Security;
     12 
     13 namespace TravelB2B.Core.Utils
     14 {
     15     public class HttpClient
     16     {
     17         static log4net.ILog logger = log4net.LogManager.GetLogger("HttpClient");
     18 
     19         #region 一般数据请求
     20         public static string WebRequest(Method method, string url, string postData)
     21         {
     22             return WebRequest(method, url, postData, Encoding.UTF8);
     23         }
     24
    　　　　　　示例：

//string url = "https://www.baidu.com";  
　　　　　　　　　　//string data = "client\_id=21768513&client\_secret=5568ab8e4f17b1a91bc732b289933f7d&grant\_type=authorization\_code&code=" + code + "&redirect\_uri=http://www.juyingzhiye.com/TaoBao/ToTocketResult&state=1212&view=web";  
　　　　　　　　　　//string res = TravelB2B.Core.Utils.HttpClient.WebRequest(Core.Utils.Method.POST, url, data);

static bool RemoteCertificateValidate(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors error)
     26         {
         
     28             return true;
     29         }
     30 
     31         public static string WebRequest(Method method, string url, string postData, Dictionary<string, dynamic> header)
     32         {
     33             return WebRequest(method, url, postData, Encoding.UTF8, header);
     34         }
     35 
     36         public  static string WebRequest(Method method, string url, string postData, Encoding encoding)
     37         {
     38             return WebRequest(method, url, postData, encoding,null);
     39         }
     40         public static string WebRequest(Method method, string url, string postData, Encoding encoding,Dictionary<string,dynamic> header)
     41         {
     42             string responseData = ""; 
     43             HttpWebRequest webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
     44             webRequest.Method = method.ToString();
     45             webRequest.ServicePoint.Expect100Continue = false;
     46             
     47 
     48             System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex("^https://", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
     49             if (regex.IsMatch(url))
     50             {
     51                 ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate;
     52             }
     53 
     54             if (method == Method.POST || method == Method.PUT)
     55             {
     56                 if (method == Method.POST)
     57                 {
     58                     webRequest.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
     59                 }
     60                 if (method == Method.PUT)
     61                 {
     62                     webRequest.ContentType = "html/xml";
     63                 }
     64                 if (header != null)
     65                 {
     66                     foreach (var item in header)
     67                     {
     68                         if (item.Key == "Date")
     69                         {
     70                             webRequest.Date = DateTime.Parse(item.Value);
     71                         }
     72                         else if (item.Key == "ContentType")
     73                         {
     74                             webRequest.ContentType = item.Value;
     75                         }
     76                         else
     77                         {
     78                             webRequest.Headers[item.Key] = item.Value;
     79                         }
     80                     }
     81                 }
     82                 byte[] Bytes = encoding.GetBytes(postData);
     83                 webRequest.ContentLength = Bytes.Length;
     84 
     85                 using (Stream  requestWriter = webRequest.GetRequestStream())
     86                 {
     87                     try
     88                     {
     89                         requestWriter.Write(Bytes, 0, Bytes.Length);
     90                     }
     91                     catch
     92                     {
     93                     }
     94                     finally
     95                     {
     96                         requestWriter.Close();
     97                     }
     98                 }
     99             }
    100 
    101             responseData = WebResponseGet(webRequest, encoding);
    102 
    103             webRequest = null;
    104 
    105             return responseData;
    106 
    107         }
    108 
    109         /// <summary>
    110         /// 访问指定页面地址
    111         /// </summary>
    112         /// <param name="method"></param>
    113         /// <param name="url"></param>
    114         /// <param name="postData"></param>
    115         /// <returns></returns>
    116         public static string WebRequest(Method method, string url, IDictionary<string, string> parameters)
    117         {
    118             return WebRequest(method, url, ToQueryString(parameters));
    119         }
    120 
    121         public static string WebRequest(Method method, string url, IDictionary<string, string> parameters,System.Text.Encoding encoding)
    122         {
    123             return WebRequest(method, url, ToQueryString(parameters), encoding);
    124         }
    125　　　　 例子：

//string url = "http://120.27.152.161/stardy/balance.jsp";  
　　　　　　　　//Dictionary<string, string> para = new Dictionary<string, string>();  
　　　　　　　　//para.Add("usr", UserName);  
　　　　　　　　//para.Add("pwd", Password);  
　　　　　　　　//return TravelB2B.Core.Utils.HttpClient.WebRequest(Utils.Method.POST, url, para, System.Text.Encoding.Default);

126         #endregion
    127 
    128         #region 带有文字和图片的请求
    129         /// <summary>
    130         /// 带有文件/图片的请求
    131 
    132         /// </summary>
    133         /// <param name="method"></param>
    134         /// <param name="url"></param>
    135         /// <param name="postData"></param>
    136         /// <returns></returns>
    137         public static string WebRequest(Method method, string url, IDictionary<string, string> parameters, FileItem fileItem, Encoding encoding)
    138         {
    139             string responseData = "";
    140             HttpWebRequest webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
    141             webRequest.Method = method.ToString();
    142             webRequest.ServicePoint.Expect100Continue = false;
    143             webRequest.KeepAlive = true;
    144             webRequest.UserAgent = "Mozilla/5.0 (Windows; U; zh-CN)";
    145 
    146             string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
    147 
    148             if (method == Method.POST || method == Method.PUT)
    149             {
    150                 webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
    151 
    152                 using (Stream requestWriter = webRequest.GetRequestStream())
    153                 {
    154                     try
    155                     {
    156                         StringBuilder sb = new StringBuilder();
    157                         string start = "--" + boundary;
    158                         string end = start + "--";
    159 
    160                         for (int i = 0; i < parameters.Count; i++)
    161                         {
    162                             sb.Append(start + "\r\n");
    163                             sb.Append("Content-Disposition: form-data; name=\"" + parameters.ElementAt(i).Key + "\"\r\n\r\n");
    164                             sb.Append(parameters.ElementAt(i).Value + "\r\n");
    165                         }
    166                         sb.Append(start + "\r\n");
    167                         sb.Append("Content-Disposition: form-data; name=\"" + fileItem.Name + "\"; filename=\"" + fileItem.FileName + "\"\r\n");
    168                         sb.Append("Content-Type: " + fileItem.ContentType + "\r\n\r\n");
    169                         string content = sb.ToString();
    170                         requestWriter.Write(Encoding.UTF8.GetBytes(content), 0, content.Length);
    171                         requestWriter.Write(fileItem.Content, 0, fileItem.Content.Length);
    172                         string endContent = "\r\n" + end;
    173                         requestWriter.Write(Encoding.UTF8.GetBytes(endContent), 0, endContent.Length);
    174 
    175                     }
    176                     catch
    177                     {
    178                         throw;
    179                     }
    180                     finally
    181                     {
    182                         requestWriter.Close();
    183                     }
    184                 }
    185             }
    186 
    187             responseData = WebResponseGet(webRequest, encoding);
    188 
    189             webRequest = null;
    190 
    191             return responseData;
    192         }
    193 
    194         #endregion
    195 
    196         #region 获取返回数据
    197         /// <summary>
    198         /// 获取返回数据
    199         /// </summary>
    200         /// <param name="webRequest"></param>
    201         /// <returns></returns>
    202         private static string WebResponseGet(HttpWebRequest webRequest, System.Text.Encoding encoding)
    203         {
    204             HttpWebResponse res = null;
    205 
    206             try
    207             {
    208                 res = (HttpWebResponse)webRequest.GetResponse();
    209             }
    210             catch (WebException ex)
    211             {
    212                 logger.Error("返回异常:" + ex.ToString());
    213                 res = (HttpWebResponse)ex.Response;
    214             }
    215             using (StreamReader responseReader = new StreamReader(res.GetResponseStream(), encoding))
    216             {
    217                 string responseData = responseReader.ReadToEnd();
    218                 responseReader.Close();
    219                 return responseData;
    220             }
    221         }
    222         #endregion
    223 
    224         #region 将字符串字典里的数据转换成URL查询字符串格式
    225 
    226         /// <summary>
    227         /// 将字符串字典里的数据转换成URL查询字符串格式。
    228         /// </summary>
    229         /// <param name="dict">字符串字典。</param>
    230         /// <returns></returns>
    231         public static string ToQueryString(IDictionary<string, string> dict)
    232         {
    233             if (dict == null)
    234                 return string.Empty;
    235 
    236             if (dict.Count == 0)
    237                 return string.Empty;
    238 
    239             var buffer = new StringBuilder();
    240             var count = 0;
    241             var end = false;
    242 
    243             foreach (var key in dict.Keys)
    244             {
    245                 if (count == dict.Count - 1) end = true;
    246 
    247                 if (end)
    248                     buffer.AppendFormat("{0}={1}", key, dict[key]);
    249                 else
    250                     buffer.AppendFormat("{0}={1}&", key, dict[key]);
    251 
    252                 count++;
    253             }
    254 
    255             return buffer.ToString();
    256         }
    257 
    258         #endregion
    259     }
    260 
    261     public enum Method { GET, POST, PUT, DELETE };
    262 
    263     #region 文件信息
    264     public class FileItem
    265     {
    266         public string ContentType
    267         {
    268             get;
    269             set;
    270         }
    271 
    272         public string Name
    273         {
    274             get;
    275             set;
    276         }
    277 
    278         public string FileName
    279         {
    280             get;
    281             set;
    282         }
    283 
    284         public byte[] Content
    285         {
    286             get;
    287             set;
    288         }
    289     }
    290     #endregion 
    291 }

转载于:https://www.cnblogs.com/hugeboke/p/11574924.html