Shulou(Shulou.com)06/02 Report--

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Collections

Using System.Net

Using System.IO

Namespace www.xinduofen.cn

{

/ / /

/ C # tool class for interfacing with http server

/ / /

Class www.xinduofen.com

{

/ / /

/ / used to cache SESSIONID or JSESSIONID transferred from the server to the client

/ / /

Private Cookie sessionidCookie = null

/ / /

/ / upload files to HttpWebServer (using "post" method)

/ / /

/ / request URL

/ / request parameter collection. Null value is passed when no parameter is needed.

/ / request cookie collection. Pass a null value when no cookie is required.

/ / upload file collection "control name, the location where the upload file is saved (including" file name "." extension "). There is no need to pass a null value when uploading

/ / return the request result string, which means that the request failed if returned as null

Public String setFilesToHttpWebServer (String url, Hashtable data, CookieCollection cookies, Hashtable filesSaveAddress)

{

/ / used to cache the result string transmitted by the server

String result = null

If (string.IsNullOrEmpty (url))

{

Return null;// input parameter exception

}

/ / the delimiter used to split the information part (cannot conflict with the original message text)

String boundary = "HttpWebTool" + DateTime.Now.Ticks

/ / end delimiter data flow

Byte [] andBoundary = Encoding.UTF8.GetBytes ("-" + boundary + "-")

/ / New line string data stream

Byte [] newline = Encoding.UTF8.GetBytes ("\ r\ n")

Try

{

HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create (url)

/ / request method

Req.Method = "POST"

/ / declare that the client only receives content of type txt

Req.Accept = "text/plain"

/ / pass parameters and data flow to the server in the form of a message

Req.ContentType = "multipart/form-data; boundary=" + boundary

/ / set the cookie box (the cookie requested by the client and the cookie returned by the server are placed in this box)

CookieContainer cookieContainer = new CookieContainer ()

If (sessionidCookie! = null & &! string.IsNullOrEmpty (sessionidCookie.Domain))

{

CookieContainer.Add (sessionidCookie)

}

If (cookies! = null)

{

CookieContainer.Add (cookies); / / add the cookie collection passed in by the caller

}

Req.CookieContainer = cookieContainer

/ / used to accumulate the length of the data stream, initialized to 0

Long dataCount = 0

Byte [] parameterBytes = getParameterBytes (data, boundary)

If (parameterBytes! = null & & parameterBytes.Length > 0)

{

/ / cumulative request parameter string data stream size

DataCount + = parameterBytes.Length

}

/ /

Hashtable uploadFileDeclareBytesSet = new Hashtable ()

/ / if there is a file to upload

If (filesSaveAddress! = null & & filesSaveAddress.Count > 0)

{

Foreach (DictionaryEntry de in filesSaveAddress)

{

/ / if the file to be uploaded exists

If (File.Exists (de.Value.ToString ()

{

Byte [] uploadFileDeclareBytes = getUploadFileDeclareBytes (de, boundary)

If (invalid adFileDeclareBytesNull)

{

/ / the header of the cumulative upload file describes the size of the string data stream

DataCount + = uploadFileDeclareBytes.Length

/ / cumulatively uploaded file body data stream size

DataCount + = new FileInfo (de.Value.ToString ()) .Length

/ / accumulate new line string data stream size

DataCount + = newline.Length

UploadFileDeclareBytesSet.Add (de.Key.ToString (), uploadFileDeclareBytes)

}

}

}

}

/ / if there is a data stream

If (dataCount > 0)

{

/ / cumulative end delimiter data flow size

DataCount + = andBoundary.Length

/ / request the length of the data stream

Req.ContentLength = dataCount

Using (Stream requestStream = req.GetRequestStream ())

{

If (parameterBytes! = null & & parameterBytes.Length > 0)

{

RequestStream.Write (parameterBytes, 0, parameterBytes.Length)

}

If (filesSaveAddress! = null & & filesSaveAddress.Count > 0)

{

Foreach (DictionaryEntry de in filesSaveAddress)

{

If (File.Exists (de.Value.ToString ()

{

Byte [] uploadFileDeclareBytes = (byte []) uploadFileDeclareBytesSet [de.Key.ToString ()]

RequestStream.Write (uploadFileDeclareBytes, 0, uploadFileDeclareBytes.Length)

Using (FileStream fileStream = new FileStream (de.Value.ToString (), FileMode.Open, FileAccess.Read))

{

/ / establish a byte group and set its size to how many bytes

Byte [] bytes = new byte [10240]

Int n =-1

While ((n = fileStream.Read (bytes, 0, bytes.Length)) > 0)

{

RequestStream.Write (bytes, 0, n); / / writes the specified byte of stream information to the file stream

}

}

RequestStream.Write (newline, 0, newline.Length)

}

}

}

RequestStream.Write (andBoundary, 0, andBoundary.Length)

}

}

/ / receive the return value

Using (HttpWebResponse myResponse = (HttpWebResponse) req.GetResponse ()) {

Using (StreamReader reader = new StreamReader (myResponse.GetResponseStream (), Encoding.UTF8)) {

Result = reader.ReadToEnd () .Trim ()

}

If (myResponse.Cookies ["SESSIONID"]! = null)

{

SessionidCookie = myResponse.Cookies ["SESSIONID"]

}

Else

{

If (myResponse.Cookies ["JSESSIONID"]! = null)

{

SessionidCookie = myResponse.Cookies ["JSESSIONID"]

}

}

}

}

Catch (Exception)

{

Console.WriteLine ("Please check whether the incoming parameters are correct or whether the server is down")

}

Return result

}

/ / /

/ / get the message data flow for the parameter data, ending with "\ r\ n"

/ / /

/ / request parameter collection. Null value is passed when no parameter is needed.

/ / message delimiter

/ / return the data flow of the parameter data. If it is empty, it means the acquisition failed.

Private byte [] getParameterBytes (Hashtable data, String boundary)

{

Byte [] parameterBytes = null

/ / if there are request parameters

If (data! = null & & data.Count > 0)

{

String parameterStr = ""

Foreach (DictionaryEntry de in data)

{

ParameterStr + = "-" + boundary

ParameterStr + = "\ r\ n" + "Content-Disposition: form-data;name=\"+ de.Key.ToString () +"\ ""

ParameterStr + = "\ r\ n" + "Content-Type: text/plain; charset=UTF-8"

ParameterStr + = "\ r\ n\ r\ n" + de.Value.ToString ()

ParameterStr + = "\ r\ n"

}

If (! string.IsNullOrEmpty (parameterStr))

{

ParameterBytes = Encoding.UTF8.GetBytes (parameterStr); / / package uploaded string data into a data stream

}

}

Return parameterBytes

}

/ / /

/ / get the header character stream of the uploaded file, ending with "\ r\ n\ r\ n"

/ / /

/ / upload file "control name, location where the uploaded file is saved (including" file name "." extension ")"

/ / message delimiter

/ / return the character stream of the header part of the uploaded file. The return will fail for the null representative.

Private byte [] getUploadFileDeclareBytes (DictionaryEntry de, String boundary)

{

Byte [] uploadFileDeclareBytes = null

/ / the header description part of the uploaded file

String uploadFileDeclareStr = ""

UploadFileDeclareStr + = "-" + boundary

UploadFileDeclareStr + = "\ r\ n" + "Content-Disposition: form-data;name=\"+ de.Key.ToString () +"\ "; filename=\"+ de.Value.ToString () +"\ ""

UploadFileDeclareStr + = "\ r\ n" + "Content-Type: application/octet-stream"

UploadFileDeclareStr + = "\ r\ n\ r\ n"

If (! string.IsNullOrEmpty (uploadFileDeclareStr))

{

UploadFileDeclareBytes = Encoding.UTF8.GetBytes (uploadFileDeclareStr); / / package uploaded string data into a data stream

}

Return uploadFileDeclareBytes

}

}

}

The ownership of the content belongs to Yuekang Sports (specializing in physique tester, student physique tester research)

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