HttpWebRequest 表单提交
1 /// <summary> 2 /// http请求 3 /// </summary> 4 public static class ZkWebRequestHelp 5 { 6 7 /// <summary> 8 /// 发送Htpp请求 9 /// </summary> 10 /// <typeparam name="T"></typeparam> 11 /// <param name="url">请求的Url</param> 12 /// <param name="headPara">头部集合键值对 默认为空</param> 13 /// <param name="method">请求方法 默认get</param> 14 /// <param name="para">参数字符 默认为字符串的空</param> 15 /// <param name="contentType">请求的数据类型 </param> 16 /// <param name="timeOut">超时时间 默认15s</param> 17 /// <param name="encoding">编码方式 默认 Encoding.UTF8</param> 18 /// <returns></returns> 19 public static T SendRequest<T>(string url, string method = "get", NameValueCollection headPara = null, string para = null, string userAgent = null, string contentType = null, int timeOut = 1200, Encoding encoding = null, bool needDeserialize = true) 20 { 21 string str = SendRequestGetStr(url, method, headPara, para, userAgent, contentType, timeOut, encoding); 22 if (needDeserialize) 23 { 24 return JsonConvert.DeserializeObject<T>(str); 25 } 26 return default(T); 27 } 28 29 30 /// <summary> 31 /// 发送Htpp请求 32 /// </summary> 33 /// <typeparam name="T"></typeparam> 34 /// <param name="url">请求的Url</param> 35 /// <param name="headPara">头部集合键值对 默认为空</param> 36 /// <param name="method">请求方法 默认get</param> 37 /// <param name="para">参数字符 默认为字符串的空</param> 38 /// <param name="contentType">请求的数据类型 </param> 39 /// <param name="timeOut">超时时间 默认15s</param> 40 /// <param name="encoding">编码方式 默认 Encoding.UTF8</param> 41 /// <returns></returns> 42 public static string SendRequestGetStr(string url, string method = "get", NameValueCollection headPara = null, string para = null, string userAgent = null, string contentType = null, int timeOut = 1200, Encoding encoding = null) 43 { 44 para = para ?? ""; 45 var request = (HttpWebRequest)WebRequest.Create(url); 46 encoding = encoding ?? Encoding.UTF8; 47 var dataByte = encoding.GetBytes(para);//请求参数 48 request.Method = string.Compare(method, "get", StringComparison.OrdinalIgnoreCase) == 0 ? WebRequestMethods.Http.Get : WebRequestMethods.Http.Post; 49 request.Timeout = timeOut * 1000; 50 request.AllowAutoRedirect = false; 51 request.ContentLength = dataByte.Length; 52 request.ContentType = contentType ?? "application/x-www-form-urlencoded"; 53 request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 54 request.UserAgent = userAgent ?? "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36"; 55 if (headPara != null && headPara.Count > 0) 56 { 57 foreach (string key in headPara) 58 { 59 request.Headers.Add(key, headPara[key]); 60 } 61 } 62 if (request.Method == WebRequestMethods.Http.Post) 63 { 64 var stream = request.GetRequestStream(); 65 stream.Write(dataByte, 0, dataByte.Length); 66 stream.Close(); 67 } 68 69 var response = (HttpWebResponse)request.GetResponse(); 70 var sr = new StreamReader(response.GetResponseStream()); 71 return sr.ReadToEnd(); 72 } 73 74 public static byte[] DownloadByteArray(string url) 75 { 76 var request = (HttpWebRequest)WebRequest.Create(url); 77 request.Timeout = 10 * 1000; 78 request.AllowAutoRedirect = false; 79 request.ContentType = "application/x-www-form-urlencoded"; 80 request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 81 request.UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36"; 82 request.Method = WebRequestMethods.Http.Get; 83 var response = (HttpWebResponse)request.GetResponse(); 84 using (var responseSteam = response.GetResponseStream()) 85 { 86 using (var ms = new MemoryStream()) 87 { 88 responseSteam.CopyTo(ms); 89 return ms.GetBuffer(); 90 } 91 } 92 93 94 } 95 }
public class SendFileHelper
{
readonly Encoding encoding = Encoding.UTF8;
public string UploadData(string url, byte[] bytes)
{
var request = (HttpWebRequest)WebRequest.Create(url);
request.Timeout = 10 * 1000;
request.AllowAutoRedirect = false;
request.ContentType = ContentType;
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36";
request.Headers.Add("apptype", "2");
request.Method = WebRequestMethods.Http.Post;
if (request.Method == WebRequestMethods.Http.Post)
{
var stream = request.GetRequestStream();
stream.Write(bytes, 0, bytes.Length);
stream.Close();
}
var response = (HttpWebResponse)request.GetResponse();
var sr = new StreamReader(response.GetResponseStream());
return sr.ReadToEnd();
}
#region 组建尾部边界值
/**/
/// <summary>
/// 拼接所有的二进制数组为一个数组
/// </summary>
/// <param name="byteArrays">数组</param>
/// <returns></returns>
/// <remarks>加上结束边界</remarks>
public byte[] JoinBytes(ArrayList byteArrays)
{
int length = 0;
int readLength = 0;
// 加上结束边界
string endBoundary = Boundary + "--\r\n"; //结束边界
byte[] endBoundaryBytes = encoding.GetBytes(endBoundary);
byteArrays.Add(endBoundaryBytes);
foreach (byte[] b in byteArrays)
{
length += b.Length;
}
byte[] bytes = new byte[length];
// 遍历复制
//
foreach (byte[] b in byteArrays)
{
b.CopyTo(bytes, readLength);
readLength += b.Length;
}
return bytes;
}
#endregion
#region 普通数据加入数组
/**/
/// <summary>
/// 获取普通表单区域二进制数组
/// </summary>
/// <param name="fieldName">表单名</param>
/// <param name="fieldValue">表单值</param>
/// <returns></returns>
/// <remarks>
/// -----------------------------7d52ee27210a3c\r\nContent-Disposition: form-data; name=\"表单名\"\r\n\r\n表单值\r\n
/// </remarks>
public byte[] CreateFieldData(string fieldName, string fieldValue)
{
string textTemplate = Boundary + "\r\nContent-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}\r\n";
string text = String.Format(textTemplate, fieldName, fieldValue);
byte[] bytes = encoding.GetBytes(text);
return bytes;
}
#endregion
#region 文件加入数组
/**/
/// <summary>
/// 获取文件上传表单区域二进制数组
/// </summary>
/// <param name="fieldName">表单名</param>
/// <param name="filename">文件名</param>
/// <param name="contentType">文件类型</param>
/// <param name="contentLength">文件长度</param>
/// <param name="stream">文件流</param>
/// <returns>二进制数组</returns>
public byte[] CreateFieldData(string fieldName, string filename, byte[] fileBytes, string contentType = "application/octet-stream")
{
string end = "\r\n";
string textTemplate = Boundary + "\r\nContent-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
// 头数据
string data = String.Format(textTemplate, fieldName, filename, contentType);
byte[] bytes = encoding.GetBytes(data);
// 尾数据
byte[] endBytes = encoding.GetBytes(end);
// 合成后的数组
byte[] fieldData = new byte[bytes.Length + fileBytes.Length + endBytes.Length];
bytes.CopyTo(fieldData, 0); // 头数据
fileBytes.CopyTo(fieldData, bytes.Length); // 文件的二进制数据
endBytes.CopyTo(fieldData, bytes.Length + fileBytes.Length); // \r\n
return fieldData;
}
#endregion
#region 属性
public string Boundary
{
get
{
string[] bArray, ctArray;
string contentType = ContentType;
ctArray = contentType.Split(';');
if (ctArray[0].Trim().ToLower() == "multipart/form-data")
{
bArray = ctArray[1].Split('=');
return "--" + bArray[1];
}
return null;
}
}
public string ContentType
{
get
{
return "multipart/form-data; boundary=---------------------------7d5b915500cee";
}
}
#endregion
}
使用示例（表单提交）:
var byteArray = ZkWebRequestHelp.DownloadByteArray("https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png");//获取文件流
var sendFile = new SendFileHelper();
ArrayList bytesArray = new ArrayList();
// 普通表单
bytesArray.Add(sendFile.CreateFieldData("name", "张三"));//普通数据
bytesArray.Add(sendFile.CreateFieldData("age", "18"));//普通数据
bytesArray.Add(sendFile.CreateFieldData("file", "123.jpg", byteArray));//文件上传
var bytes = sendFile.JoinBytes(bytesArray);
sendFile.UploadData("http://localhost:16311/api/Authorization/UploadData", bytes);
