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所属分类：.NET技术
遇到接口开发时，对接客户要求发送请求数据为form表单提交，以下是经过大佬们写过类似整理出来适合我自己用的一套
public class FormItemModel { /// <summary> ///主键 /// </summary> public string Key { set; get; } /// <summary> /// 值 /// </summary> public string Value { set; get; } /// <summary> /// 值 /// </summary> public long Values { get; set; } }
1 private void btn_Click(object sender, EventArgs e) 2 { 4 var url = "*******************************"; 5 long _ts = ConvertDataTimeToLong(DateTime.Now); 6 string _appSecret = "*************"; 7 string _appId = "****************"; 8 string _tokens = "";//加密 9 string _Num = "123"; 10 string _Code = "111"; 11 string _idNo = "1111"; 12 var formDatas = new List<FormItemModel>(); 13 14 formDatas.Add(new FormItemModel() 15 { 16 Key = "appId", 17 Value = _appId 18 }); 19 formDatas.Add(new FormItemModel() 20 { 21 Key = "ts", 22 Values = _ts 23 }); 24 formDatas.Add(new FormItemModel() 25 { 26 Key = "tokens", 27 Value = _tokens 28 }); 29 formDatas.Add(new FormItemModel() 30 { 31 Key = "Num", 32 Value = _Num 33 }); 34 formDatas.Add(new FormItemModel() 35 { 36 Key = "Code", 37 Value = _Code 38 }); 39 formDatas.Add(new FormItemModel() 40 { 41 Key = "idNo", 42 Value = _idNo 43 }); 44 //提交表单 45 var result = HTExamDocking.PostForm(url, formDatas); 46 if (result != null) 47 { 48 //MessageBox.Show("成功"); 49 } 50 }
1 /// <summary> 2 /// 使用Post方法获取字符串结果 3 /// </summary> 4 /// <param name="url"></param> 5 /// <param name="formItems">Post表单内容</param> 6 /// <param name="cookieContainer"></param> 7 /// <param name="timeOut">默认20秒</param> 8 /// <param name="encoding">响应内容的编码类型（默认utf-8）</param> 9 /// <returns></returns> 10 public static string PostForm(string url, List<FormItemModel> formItems, CookieContainer cookieContainer = null, string refererUrl = null, Encoding encoding = null, int timeOut = 20000) 11 { 12 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 13 #region 初始化请求对象 14 request.Method = "POST"; 15 request.Timeout = timeOut; 16 request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 17 request.KeepAlive = true; 18 request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36"; 19 if (!string.IsNullOrEmpty(refererUrl)) 20 request.Referer = refererUrl; 21 if (cookieContainer != null) 22 request.CookieContainer = cookieContainer; 23 #endregion 24 25 string boundary = "----" + DateTime.Now.Ticks.ToString("x");//分隔符 26 request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary); 27 //请求流 28 var postStream = new MemoryStream(); 29 #region 处理Form表单请求内容 30 //是否用Form上传文件 31 var formUploadFile = formItems != null && formItems.Count > 0; 32 if (formUploadFile) 33 { 34 //文件数据模板 35 string fileFormdataTemplate = 36 "rn--" + boundary + 37 "rnContent-Disposition: form-data; name="{0}"; filename="{1}"" + 38 "rnContent-Type: application/octet-stream" + 39 "rnrn"; 40 //文本数据模板 41 string dataFormdataTemplate = 42 "rn--" + boundary + 43 "rnContent-Disposition: form-data; name="{0}"" + 44 "rnrn{1}"; 45 foreach (var item in formItems) 46 { 47 string formdata = null; 48 49 //上传文本 50 if (item.Value != null) 51 { 52 formdata = string.Format( 53 dataFormdataTemplate, 54 item.Key, 55 item.Value); 56 } 57 else 58 { 59 formdata = string.Format( 60 dataFormdataTemplate, 61 item.Key, 62 item.Values); 63 } 64 //统一处理 65 byte[] formdataBytes = null; 66 //第一行不需要换行 67 if (postStream.Length == 0) 68 formdataBytes = Encoding.UTF8.GetBytes(formdata.Substring(2, formdata.Length - 2)); 69 else 70 formdataBytes = Encoding.UTF8.GetBytes(formdata); 71 postStream.Write(formdataBytes, 0, formdataBytes.Length); 72 } 73 //结尾 74 var footer = Encoding.UTF8.GetBytes("rn--" + boundary + "--rn"); 75 postStream.Write(footer, 0, footer.Length); 76 77 } 78 else 79 { 80 request.ContentType = "application/x-www-form-urlencoded"; 81 } 82 #endregion 83 84 request.ContentLength = postStream.Length; 85 86 #region 输入二进制流 87 if (postStream != null) 88 { 89 postStream.Position = 0; 90 //直接写入流 91 Stream requestStream = request.GetRequestStream(); 92 93 byte[] buffer = new byte[1024]; 94 int bytesRead = 0; 95 while ((bytesRead = postStream.Read(buffer, 0, buffer.Length)) != 0) 96 { 97 requestStream.Write(buffer, 0, bytesRead); 98 } 99 100 ////debug 101 //postStream.Seek(0, SeekOrigin.Begin); 102 //StreamReader sr = new StreamReader(postStream); 103 //var postStr = sr.ReadToEnd(); 104 postStream.Close();//关闭文件访问 105 } 106 #endregion 107 108 HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 109 if (cookieContainer != null) 110 { 111 response.Cookies = cookieContainer.GetCookies(response.ResponseUri); 112 } 113 114 using (Stream responseStream = response.GetResponseStream()) 115 { 116 using (StreamReader myStreamReader = new StreamReader(responseStream, encoding ?? Encoding.UTF8)) 117 { 118 string retString = myStreamReader.ReadToEnd(); 119 return retString; 120 } 121 } 122 }
