ASP. net http analog submission common class get post, asp. netget

ASP. net http analog submission common class get post, asp. netget

Usage:

WebRequestSugar ws = new WebRequestSugar (); // optional parameter // ws. setAccept // ws. setContentType // ws. setCookie // ws. setTimeOut // ws. setIsAllowAutoRedirect // GET var html = ws. httpGet ("http: // localhost: 24587/Http/HttpTest. aspx "); // GET var paras = new Dictionary <string, string> (); paras. add ("name", "skx"); paras. add ("id", "100"); var html2 = ws. httpGet ("http: // localhost: 24587/Http/HttpTest. aspx ", paras); // POST var postHtml = ws. httpPost ("http: // localhost: 24587/Http/HttpTest. aspx ", paras); // post and file var postHtml2 = ws. httpUploadFile ("http: /localhost: 24587/Http/HttpTest. aspx "," the file address can be an array ", paras );

　　

 

Class:

Using System; using System. collections. generic; using System. linq; using System. text; using System. net; using System. IO; using System. text. regularExpressions; using System. security. cryptography. x509Certificates; using System. net. security; using System. collections. specialized; namespace SyntacticSugar {// <summary> /// ** Description: Simulate an http post get request and obtain data. // ** Creation Time: // ** modification time:-// ** Author: sunkaixuan /// ** Usage instructions: // </summary> public class WebRequestSugar {// <summary> // set cookie // </summary> private CookieContainer cookie; /// <summary> /// whether redirection is allowed /// </summary> private bool allowAutoRedirect = true; /// <summary> /// contentType /// </summary> private string contentType = "application/x-www-form-urlencoded "; /// <summary> // accept // </summary> private string accept = "*/*"; // <sum Mary> // expiration time /// </summary> private int time = 5000; // <summary> // set the request expiration time (unit: milliseconds) (default: 5000) /// </summary> /// <param name = "time"> </param> public void SetTimeOut (int time) {this. time = time ;}/// <summary> /// set accept (default :*/*) /// </summary> /// <param name = "accept"> </param> public void SetAccept (string accept) {this. accept = accept;} // <summary> // sets the contentType (default: application/x-www- Form-urlencoded) /// </summary> /// <param name = "contentType"> </param> public void SetContentType (string contentType) {this. contentType = contentType ;} /// <summary> /// set Cookie /// </summary> /// <param name = "cookie"> </param> public void SetCookie (CookieContainer cookie) {this. cookie = cookie;} // <summary> // whether to allow redirection (default: true) /// </summary> /// <param name = "allowAutoRedirect"> </param> pub Lic void SetIsAllowAutoRedirect (bool allowAutoRedirect) {this. allowAutoRedirect = allowAutoRedirect ;} /// <summary> /// the post request returns html /// </summary> /// <param name = "url"> </param> /// <param name = "postDataStr"> </param> // <returns> </returns> public string HttpPost (string url, dictionary <string, string> postdata) {string postDataStr = null; if (postdata! = Null & postdata. count> 0) {postDataStr = string. join ("&", postdata. select (it => it. key + "=" + it. value);} HttpWebRequest request = (HttpWebRequest) WebRequest. create (url); request. allowAutoRedirect = allowAutoRedirect; request. method = "POST"; request. accept = accept; request. contentType = this. contentType; request. timeout = time; request. contentLength = Encoding. UTF8.GetByteCount (postDataSt R); if (cookie! = Null) request. cookieContainer = cookie; // The cookie information is maintained by CookieContainer. Stream myRequestStream = request. getRequestStream (); StreamWriter myStreamWriter = new StreamWriter (myRequestStream, Encoding. getEncoding ("gb2312"); myStreamWriter. write (postDataStr); myStreamWriter. close (); HttpWebResponse response = null; try {this. setCertificatePolicy (); response = (HttpWebResponse) request. getResponse ();} Catch (System. Exception ex) {throw ex;} // get the redirection address // string url1 = response. Headers ["Location"]; if (response! = Null) {Stream myResponseStream = response. getResponseStream (); StreamReader myStreamReader = new StreamReader (myResponseStream, Encoding. getEncoding ("UTF-8"); string retString = myStreamReader. readToEnd (); myStreamReader. close (); myResponseStream. close (); return retString;} else {return null; // The returned result of the post request is null }}/// <summary> /// get request to obtain the returned html /// </summary> /// <param name = "url"> No parameter URL </param> /// <Param name = "querydata"> parameter </param> /// <returns> </returns> public string HttpGet (string url, Dictionary <string, string> querydata) {if (querydata! = Null & querydata. Count> 0) {url + = "? "+ String. join ("&", querydata. select (it => it. key + "=" + it. value);} return HttpGet (url );} /// <summary> /// get request to obtain the returned html // </summary> /// <param name = "url"> </param> // <returns> </returns> public string HttpGet (string url) {HttpWebRequest request = (HttpWebRequest) WebRequest. create (url); request. method = "GET"; request. contentType = "text/html; charset = UTF-8"; request. cookieContainer = co Okie; request. accept = this. accept; request. timeout = time; this. setCertificatePolicy (); HttpWebResponse response = (HttpWebResponse) request. getResponse (); // response. cookies = Cookies. getCookies (response. responseUri); Stream myResponseStream = response. getResponseStream (); StreamReader myStreamReader = new StreamReader (myResponseStream, Encoding. getEncoding ("UTF-8"); string retString = myStreamR Eader. readToEnd (); myStreamReader. close (); myResponseStream. close (); return retString ;} /// <summary> // POST File // </summary> /// <param name = "url"> </param> /// <param name = "file"> file path </param> /// <param name = "postdata"> </param> /// <returns> </returns> public string HttpUploadFile (string url, string file, Dictionary <string, string> postdata) {return HttpUploadFile (url, file, postdata, Encoding. UTF8 );} /// <summary> // POST File // </summary> /// <param name = "url"> </param> /// <param name = "file"> file path </param> /// <param name = "postdata"> parameter </param> /// <param name = "encoding"> </param >/// <returns> </returns> public string HttpUploadFile (string url, string file, Dictionary <string, string> postdata, Encoding encoding) {return HttpUploadFile (url, new string [] {file}, postdata, encoding );} /// <Summary> // POST File // </summary> /// <param name = "url"> </param> /// <param name = "files"> file path </param> /// <param name = "postdata"> parameter </param> /// <returns> </returns> public string HttpUploadFile (string url, string [] files, Dictionary <string, string> postdata) {return HttpUploadFile (url, files, postdata, Encoding. UTF8);} // <summary> // POST File // </summary> // <param name = "url"> </param>/ // <Param name = "files"> file path </param> /// <param name = "postdata"> parameter </param> /// <param name =" encoding "> </param> // <returns> </returns> public string HttpUploadFile (string url, string [] files, Dictionary <string, string> postdata, Encoding encoding) {string boundary = "---------------------------" + DateTime. now. ticks. toString ("x"); byte [] boundarybytes = Encoding. ASCII. getBytes ("\ r \ n --" + boundary + "\ R \ n"); byte [] endbytes = Encoding. ASCII. getBytes ("\ r \ n --" + boundary + "-- \ r \ n"); // 1. httpWebRequest request = (HttpWebRequest) WebRequest. create (url); request. contentType = "multipart/form-data; boundary =" + boundary; request. method = "POST"; request. keepAlive = true; request. accept = this. accept; request. timeout = this. time; request. allowAutoRedirect = this. allowAutoRedirect; I F (cookie! = Null) request. cookieContainer = cookie; request. credentials = CredentialCache. defaultCredentials; using (Stream stream = request. getRequestStream () {// 1.1 key/value string formdataTemplate = "Content-Disposition: form-data; name = \ "{0} \" \ r \ n {1} "; if (postdata! = Null) {foreach (string key in postdata. keys) {stream. write (boundarybytes, 0, boundarybytes. length); string formitem = string. format (formdataTemplate, key, postdata [key]); byte [] formitembytes = encoding. getBytes (formitem); stream. write (formitembytes, 0, formitembytes. length) ;}}// 1.2 file string headerTemplate = "Content-Disposition: form-data; name = \" {0 }\"; filename = \ "{1} \" \ r \ nContent-Type: Application/octet-stream \ r \ n "; byte [] buffer = new byte [4096]; int bytesRead = 0; for (int I = 0; I <files. length; I ++) {stream. write (boundarybytes, 0, boundarybytes. length); string header = string. format (headerTemplate, "file" + I, Path. getFileName (files [I]); byte [] headerbytes = encoding. getBytes (header); stream. write (headerbytes, 0, headerbytes. length); using (FileStream fileStream = new FileStream (files [I], FileMode. Open, FileAccess. Read) {while (bytesRead = fileStream. Read (buffer, 0, buffer. Length ))! = 0) {stream. write (buffer, 0, bytesRead) ;}}// 1.3 form end stream. write (endbytes, 0, endbytes. length);} // 2. webResponse HttpWebResponse response = (HttpWebResponse) request. getResponse (); using (StreamReader stream = new StreamReader (response. getResponseStream () {return stream. readToEnd ();}} /// <summary> /// obtain the image in the response /// </summary> /// <param name = "url"> </param> /// <returns> </returns> public Stream GetResponseImage (string url) {Stream resst = null; try {HttpWebRequest req = (HttpWebRequest) WebRequest. create (url); req. keepAlive = true; req. method = "GET"; req. allowAutoRedirect = allowAutoRedirect; req. cookieContainer = cookie; req. contentType = this. contentType; req. accept = this. accept; req. timeout = time; Encoding myEncoding = Encoding. getEncoding ("UTF-8"); this. setCertificatePolicy (); HttpWebResponse res = (HttpWebResponse) req. getResponse (); resst = res. getResponseStream (); return resst;} catch {return null ;}} /// <summary> /// obtain the first value of the matching Regular Expression // </summary> /// <param name = "html"> </param> // /<param name = "pattern"> </param> // <returns> </returns> private string GetStringByRegex (string html, string pattern) {Regex re = new Regex (pattern, RegexOptions. ignoreCase); MatchCollection matchs = re. matches (html); if (matchs. count> 0) {return matchs [0]. groups [1]. value;} else return "";} /// <summary> /// check whether the response returned by regular expression verification is correct /// </summary> /// <param name = "html"> </param> /// <param name = "pattern"> </param> // <returns> </returns> private bool VerifyResponseHtml (string html, string pattern) {Regex re = new Regex (pattern); return re. isMatch (html);} // register a certificate verification callback event. Register private void SetCertificatePolicy () {ServicePointManager before the request. certificate + = RemoteCertificateValidate;} /// <summary> // for remote certificate verification, fixed return true /// </summary> private static bool RemoteCertificateValidate (object sender, X509Certificate cert, x509Chain chain, SslPolicyErrors error) {return true ;}}}