ASP.NET的POST和GET提交并接收处理返回值
POST方法:
数据提交
/// <summary>
/// POST提交数据接收字符json
/// </summary>
/// <param name="url">远程服务器路径</param>
/// <param name="postData">提交数据</param>
/// <returns>接收数据</returns>
public static string PostData(string url, byte[] postData)
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
myRequest.Method = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = postData.Length; Stream newStream = myRequest.GetRequestStream();
// Send the data.
newStream.Write(postData, , postData.Length);
newStream.Close(); // Get response
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
return reader.ReadToEnd();
}
注意:POST提交必须有内容提交才可以,否则会报远程服务器返回错误: (411) 所需的长度错误。存在post内容为null的可以修改访问方式为Get
/// <summary>
/// POST提交数据接收字符json
/// </summary>
/// <param name="url">远程服务器路径</param>
/// <param name="postData">提交数据</param>
/// <returns>接收数据</returns>
public static string PostData(string url, byte[] postData)
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
if (postData != null)
{
myRequest.Method = "POST";
// Send the data.
myRequest.ContentType = "application/x-www-form-urlencoded";
//myRequest.ContentType = "application/json";//josn格式数据提交
myRequest.ContentLength = postData.Length;
Stream newStream = myRequest.GetRequestStream();
newStream.Write(postData, , postData.Length);
newStream.Close();
}
else
{
myRequest.Method = "GET";//postData无数据时
}
// Get response
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
return reader.ReadToEnd();
}
调用POST提交结果
public string SendSMS(string mobilenumber,string content)
{
string Message = "";
//远程提交地址
string RemoteUrl = "http://www.cangcool.com/sms.action?";
string URL = RemoteUrl;
string Data = string.Format("u={0}&p={1}&m={2}&c={3}&s={4}&g={5}", _UserName, _Pwd, mobilenumber, content,"","");
byte[] ByteData=System.Text.Encoding.Default.GetBytes(Data);
Message = PostData(URL, ByteData);
//JavaScriptSerializer serializer = new JavaScriptSerializer();
//jsonOut = serializer.Deserialize<RecordInfo>(strJsonInput);
return Message;
}
直接加载POST无参提交数据
public ActionResult PayOnline()
{
System.IO.Stream sm = Request.InputStream;
int len = (int)sm.Length;//post数据长度
byte[] inputByts = new byte[len];//字节数据,用于存储post数据
sm.Read(inputByts, , len);//将post数据写入byte数组中
sm.Close();//关闭IO流
string data = Encoding.GetEncoding("UTF-8").GetString(inputByts);//转为UTF-8编码
data = Server.UrlDecode(data);
return View(data);
}
C#POST提交文件上传
WebClient webclient = new WebClient();
byte[] responseArray = webclient.UploadFile("http://localhost:51881/API/Aliyun/UploadBusinessCard?ClientKey=111&UserID=654&File_key=file ", "POST", @"D:\1.jpg");
string getPath = System.Text.Encoding.GetEncoding("UTF-8").GetString(responseArray);
POST提交参数数据和上传文件
private static string HttpPostData(string url, int timeOut, string fileKeyName,string fileName, byte[] fileData,Dictionary<string,string> stringDict)
{
string responseContent;
var memStream = new MemoryStream();
var webRequest = (HttpWebRequest)WebRequest.Create(url);
// 边界符
var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
// 边界符
var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
//var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);//文件路径方式获取文件流
var fileStream = new MemoryStream(fileData);
// 最后的结束符
var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");
// 设置属性
webRequest.Method = "POST";
webRequest.Timeout = timeOut;
webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
// 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, fileKeyName, fileName);
var headerbytes = Encoding.UTF8.GetBytes(header);
memStream.Write(beginBoundary, , beginBoundary.Length);
memStream.Write(headerbytes, , headerbytes.Length);
var buffer = new byte[];
int bytesRead; // =0
while ((bytesRead = fileStream.Read(buffer, , buffer.Length)) != )
{
memStream.Write(buffer, , bytesRead);
}
// 写入字符串的Key
var stringKeyHeader = "\r\n--" + boundary +
"\r\nContent-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
foreach (byte[] formitembytes in from string key in stringDict.Keys
select string.Format(stringKeyHeader, key, stringDict[key])
into formitem
select Encoding.UTF8.GetBytes(formitem))
{
memStream.Write(formitembytes, , formitembytes.Length);
}
// 写入最后的结束边界符
memStream.Write(endBoundary, , endBoundary.Length);
webRequest.ContentLength = memStream.Length;
var requestStream = webRequest.GetRequestStream();
memStream.Position = ;
var tempBuffer = new byte[memStream.Length];
memStream.Read(tempBuffer, , tempBuffer.Length);
memStream.Close();
requestStream.Write(tempBuffer, , tempBuffer.Length);
requestStream.Close();
var httpWebResponse = (HttpWebResponse)webRequest.GetResponse();
using (var httpStreamReader = new StreamReader(httpWebResponse.GetResponseStream(),
Encoding.GetEncoding("utf-8")))
{
responseContent = httpStreamReader.ReadToEnd();
}
fileStream.Close();
httpWebResponse.Close();
webRequest.Abort();
return responseContent;
}
调用方法:
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
var url = "https://fileapi.instrument.com.cn/upflash/upimg.ashx"; string[] filetype = { ".rar", ".doc", ".docx", ".zip", ".pdf", ".txt", ".swf", ".wmv", ".ppt", ".pptx", ".caj", ".jpg", ".jpeg", ".gif", ".rar", ".zip", ".xls", ".xlsx" }; //文件允许格式 //文件大小限制,单位MB,同时在web.config里配置环境默认为100MB
var uploadFilesSize = IM.Utils.Configuration.AppSettings("UploadFilesSize");
var size = ;
if (!string.IsNullOrEmpty(uploadFilesSize))
{
size = Convert.ToInt32(uploadFilesSize);
}
var colname = HttpContext.Current.Request["upuser"]; if (string.IsNullOrEmpty(colname))
{
colname = "attachment";
}
var file = context.Request.Files[];
byte[] bytes = new byte[file.ContentLength];
using (BinaryReader reader = new BinaryReader(file.InputStream, Encoding.UTF8))
{
bytes = reader.ReadBytes(file.ContentLength);
}
var rel=HttpPostData(url, * * , file.FileName, file.FileName, bytes, new Dictionary<string, string>() { { "colname", colname } });
HttpContext.Current.Response.Write(rel);
}
GET方法:
数据提交
/// <summary>
/// GET提交
/// </summary>
/// <param name="strUrl">远程服务器路径</param>
/// <param name="charset">字符编码</param>
/// <returns></returns>
public static string GeData(string strUrl, string charset)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
request.Method = "GET";
request.Timeout = ;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
Stream streamReceive = response.GetResponseStream();
Encoding encoding = Encoding.Default;
if (!string.IsNullOrEmpty(charset) && Encoding.GetEncoding(charset) != Encoding.Default)
{
encoding = Encoding.GetEncoding(charset);
} StreamReader streamReader = new StreamReader(streamReceive, encoding);
return streamReader.ReadToEnd();
}
调用GET提交结果
public string SendSMS(string mobilenumber, string content)
{
string Message = "";
//远程提交地址
string RemoteUrl = "http://www.cangcool.com/sms.action?";
string Data = string.Format("u={0}&p={1}&m={2}&c={3}&s={4}&g={5}", _UserName, _Pwd, mobilenumber, content, "", "");
string URL = RemoteUrl + Data;
Message = GeData(URL,"UTF-8");
return Message;
}
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