.net 模拟formData请求
public class HttpClientHelper
{
///
/// post数据
///
///
///
/// true:用multipart/form-data发送，false：默认格式
/// postParaList, bool isFile = false)
{
if (isFile == true)
{
return postFileMessage(strUrl, postParaList);
}
else
{
StringBuilder strPost = new StringBuilder();
for (int i = 0; i < postParaList.Count; i++)
{
if (i != 0)
{
strPost.Append("&");
}
strPost.Append(postParaList[i].Prop);
strPost.Append("=");
strPost.Append(postParaList[i].Value);
}
return postMessage(strUrl, strPost.ToString());
}
}
public static string postFileMessage(string strUrl, List postParaList)
{
try
{
string responseContent = "";
var memStream = new MemoryStream();
var webRequest = (HttpWebRequest)WebRequest.Create(strUrl);
// 边界符
var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
// 边界符
var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
// 最后的结束符
var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");
memStream.Write(beginBoundary, 0, beginBoundary.Length);
// 设置属性
webRequest.Method = "POST";
webRequest.Timeout = 10000;
webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
for (int i = 0; i < postParaList.Count; i++)
{
PostDateClass temp = postParaList[i];
if (temp.Type == 1)
{
var fileStream = new FileStream(temp.Value, FileMode.Open, FileAccess.Read);
// 写入文件
const string filePartHeader =
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type: application/octet-stream\r\n\r\n";
var header = string.Format(filePartHeader, temp.Prop, Path.GetFileName(temp.Value));
var headerbytes = Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
var buffer = new byte[1024];
int bytesRead; // =0
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
memStream.Write(buffer, 0, bytesRead);
}
string end = "\r\n";
headerbytes = Encoding.UTF8.GetBytes(end);
memStream.Write(headerbytes, 0, headerbytes.Length);
fileStream.Close();
}
else if (temp.Type == 0)
{
// 写入字符串的Key
var stringKeyHeader = "Content-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
var header = string.Format(stringKeyHeader, temp.Prop, temp.Value);
var headerbytes = Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
}
if (i != postParaList.Count - 1)
memStream.Write(beginBoundary, 0, beginBoundary.Length);
else
// 写入最后的结束边界符
memStream.Write(endBoundary, 0, endBoundary.Length);
}
webRequest.ContentLength = memStream.Length;
var requestStream = webRequest.GetRequestStream();
memStream.Position = 0;
var tempBuffer = new byte[memStream.Length];
memStream.Read(tempBuffer, 0, tempBuffer.Length);
memStream.Close();
requestStream.Write(tempBuffer, 0, tempBuffer.Length);
requestStream.Close();
using (HttpWebResponse res = (HttpWebResponse)webRequest.GetResponse())
{
using (Stream resStream = res.GetResponseStream())
{
byte[] buffer = new byte[1024];
int read;
while ((read = resStream.Read(buffer, 0, buffer.Length)) > 0)
{
responseContent += Encoding.UTF8.GetString(buffer, 0, read);
}
}
res.Close();
}
return responseContent;
}
catch (Exception e)
{
throw e;
}
}
public static string postMessage(string strUrl, string strPost)
{
try
{
CookieContainer objCookieContainer = null;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
request.Method = "Post";
request.Accept = "*/*";
request.Headers.Add("Accept-Language: zh-CN,zh;q=0.8");
request.Headers.Add("Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3");
request.ContentType = "application/x-www-form-urlencoded";
request.Timeout = 10000;
request.Referer = strUrl;//.Remove(strUrl.LastIndexOf("/"));
Console.WriteLine(strUrl);
if (objCookieContainer == null)
objCookieContainer = new CookieContainer();
request.CookieContainer = objCookieContainer;
//Console.WriteLine(objCookieContainer.ToString());
if (!string.IsNullOrEmpty(strPost))
{
byte[] byteData = Encoding.UTF8.GetBytes(strPost.ToString().TrimEnd('&'));
request.ContentLength = byteData.Length;
using (Stream reqStream = request.GetRequestStream())
{
reqStream.Write(byteData, 0, byteData.Length);
reqStream.Close();
}
}
string strResponse = "";
using (HttpWebResponse res = (HttpWebResponse)request.GetResponse())
{
objCookieContainer = request.CookieContainer;
//QueryRecordForm.LoginCookie = objCookieContainer.GetCookies(new Uri(strUrl));
res.Cookies = objCookieContainer.GetCookies(new Uri(strUrl));
foreach (Cookie c in res.Cookies)
{
}
using (Stream resStream = res.GetResponseStream())
{
byte[] buffer = new byte[1024];
int read;
while ((read = resStream.Read(buffer, 0, buffer.Length)) > 0)
{
strResponse += Encoding.UTF8.GetString(buffer, 0, read);
}
}
res.Close();
}
return strResponse;
}
catch (Exception e)
{
throw e;
}
}
public static string sendMessageCookie(string strUrl, string strPost, CookieContainer cookieContainer)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
if (cookieContainer != null)
{
request.CookieContainer = cookieContainer;
}
request.Method = "Post";
request.Accept = "*/*";
request.Headers.Add("Accept-Language: zh-CN,zh;q=0.8");
request.Headers.Add("Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3");
request.Headers.Add("Cache-Control: max-age=0");
request.Accept = "text/xml,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36";
request.Timeout = 10000;
request.Referer = strUrl;//.Remove(strUrl.LastIndexOf("/"));
if (!string.IsNullOrEmpty(strPost))
{
request.ContentType = "application/json; text/html; charset=UTF-8";
byte[] byteData = Encoding.UTF8.GetBytes(strPost.ToString().TrimEnd('&'));
request.ContentLength = byteData.Length;
using (Stream reqStream = request.GetRequestStream())
{
reqStream.Write(byteData, 0, byteData.Length);
reqStream.Close();
}
}
string strResponse = "";
using (HttpWebResponse res = (HttpWebResponse)request.GetResponse())
{
if (cookieContainer != null)
{
cookieContainer = request.CookieContainer;
}
using (Stream resStream = res.GetResponseStream())
{
byte[] buffer = new byte[1024];
int read;
while ((read = resStream.Read(buffer, 0, buffer.Length)) > 0)
{
strResponse += Encoding.UTF8.GetString(buffer, 0, read);
}
}
res.Close();
}
return strResponse;
}
catch (Exception e)
{
throw e;
}
}
} public class PostDateClass
{
String prop;
public String Prop
{
get { return prop; }
set { prop = value; }
}
String value;
public String Value
{
get { return this.value; }
set { this.value = value; }
}
///
/// 0为字符串，1为文件
///
int type;
public int Type
{
get { return type; }
set { type = value; }
}
public PostDateClass(String prop, String value, int type = 0)
{
this.prop = prop;
this.value = value;
this.type = type;
}
}使用
List postList = new List();
postList.Add(new PostDateClass("file", "D:\xx\1.jpg", 1));
string strRequest = HttpClientHelper.postMessage("http:localhost:9527/fileUpload", postList, true);