Android http HttpURLConnection

 /**  * Http get  Request   *   *  @param  urlpath   *   *   */ private static string httpconnbyget ( Requesturl ru,params params) {   string token =  (String)   Params.getmap (). Get ("token")  ;  String et =  (String)  params.getmap (). Get (" ET ")  ;  params.getmap (). Remove (" et ");   if (token != null ) {    params.getmap (). Put ("token", Md5.md5 (Token + et + params.getmap (). Get ("UID")  +  ru.getkeywords ()));   }    string urlpath = ru.geturl ()  + HttpURLConstant.QMARK + HttpURLConstant.COMMON_PARAMS + et +  Params.tostring ()  ; //general parameter Settings   log.w ("Neturl", "Geturl:" +urlpath);   url url  = null;  httpurlconnection urlconnection = null;      try {    Bytearrayoutputstream outstream = new bytearrayoutputstream ();    byte[]  data = new byte[2048];    //should not be small!    int len = 0;   url = new url (UrlPath);       urlConnection =  (HttpURLConnection)  url.openconnection ();      //   class<?> clazz=url.openconnection (). GetClass ();   //Look back what kind of ghost type//   class<?> clazzsuper=clazz.getsuperclass ();    What the hell is the     //father class?          //getinputstream secretly performed the connection, do not need urlconnection.connect ();    urlconnection.setreadtimeout (readtimeout);                                                     //  set the Request Timeout time    urlconnection.setconnecttimeout (connecttimeout);    if   (Urlconnection.getresponsecode () &NBSP;==&NBSP;HTTPURLCONNECTION.HTTP_OK)  {          inputstream instream = urlconnection.getinputstream ();    //gets the input stream, at which point it really builds the link     while  (len = instream.read (data))  !=  -1)  {     outstream.write (Data, 0, len);     }        instream.close ();        if (Isdebug) {LOG.E (TAG, "get  return Data" +new string (Outstream.tobytearray ()));}     return new string (Outstream.tobytearray ());    }else{ //returns the HTTP error code, not our own definition of the error code!         //Handle HTTP Error return code         &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;LOG.E (TAG, "get  network Connection Failed" +urlconnection.getresponsecode ());     return  "http_error-" +urlconnection.getresponsecode ();    }  } catch   (malformedurlexception e)  {   e.printstacktrace (); &NBSP;&NBSP;&NBSP;LOG.E (TAG, " Malformedurlexception e ");  } catch  (ioexception e)  {    E.printstacktrace (); &NBSP;&NBSP;&NBSP;LOG.E (TAG, "ioexception e");  } finally{           if (urlconnection!=null) {     Urlconnection.disconnect ();   //always need to be closed!    }     }  return null;   }               /**  * http post  Request    *  *  @param  urlpath  *  @param  paramsDatas  */  Private static string httpconnbypost (Requesturl ru,params params)  {   string token =  (String)  params.getmap (). Get ("token")  ;  string et  =  (String)  params.getmap (). Get ("et")  ;  params.getmap (). Remove ("et");   if (token != null ) {   params.getmap (). Put ("token", &NBSP;MD5.MD5 (token  + et + params.getmap (). Get ("UID")  + ru.getkeywords ()));  }     URL url = null;                                                          //  Create a URL object based on an address   HttpURLConnection urlConnection = null;                                 //  open a link based on a URL object   try  {   url = new url (Ru.geturl ());                                                             //  Create URL objects based on address    urlConnection =  (HttpURLConnection)  url.openconnection ();                              //  Open link       urlconnection.setrequestmethod ("POST") based on URL object;                                                  //  How to set the request     Urlconnection.setreadtimeout (readtimeout);                                              //  set the time-out for the request    urlconnection.setconnecttimeout (connecttimeout);          String paramsData = httpurlconstant.common_params + et + params.tostring ();            //the use of general parameters to pay attention to &NBSP;&NBSP;&NBSP;LOG.W ("Neturl", url+ "?" +paramsdata);       urlconnection.setrequestproperty ("Connection",  " Keep-alive ");                          //  Setup to maintain long connections       Urlconnection.setrequestproperty ("Content-type", "application/x-www-form-urlencoded"); //  settings file type    urlconnection.setrequestproperty ("Content-length", String.valueof (ParamsData.getBytes (). Length); //  Set the data    urlconnection.setrequestproperty ("User-agent", "Devond_Watch, Android-device. ");   // ???    urlconnection.setdooutput (TRUE);   //  send POST request must set allow output     Urlconnection.setdoiNput (True);    //  send a POST request must be set to allow input, setdoinput default value is true    Urlconnection.setusecaches (False); //  is safe and does not allow caching           urlconnection.connect ();            // Urlconnection.getinputstream () will automatically open the connected    OutputStream os =  Urlconnection.getoutputstream ();     //gets the output stream Developer   os.write ( Paramsdata.getbytes ());    os.flush ();      if  ( Urlconnection.getresponsecode () &NBSP;==&NBSP;HTTPURLCONNECTION.HTTP_OK)  {                      inputstream  is = urlconnection.getinputstream ();           //  gets the input stream object of the response     bytearrayoutputstream baos =&Nbsp;new bytearrayoutputstream (); //  create byte output stream object     int len =  0;                                                //  define the length of the read     byte  buffer[] = new byte[2048];                            //  Defining buffers     while  ((len = is.read (buffer))  != -1)  {                    //  Loop through      baos.write (Buffer, 0, len) According to the size of the buffer;                               writes to the OS object based on the length of the Read     }    is.close ();//  frees the resources         baos.close ();       final string result  = new string (Baos.tobytearray ());         if (IsDebug) { &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;LOG.E (TAG, "Post returned data:" +result);    }      return new string (Baos.tobytearray ());        }else{ // The error code returned is HTTP, not our own definition of the error code!     //Handle HTTP Error return code &NBSP;&NBSP;&NBSP;&NBSP;LOG.E (Tag,urlconnection.getresponsecode () + "# post  Network Connection Failed # "+urlconnection.geterrorstream ());    return " HTTP_ERROR-"+ Urlconnection.getresponsecode ();   }  } catch  (MalformedURLException e ) {   e.printstacktrace (); &NBSP;&NBSP;&NBSP;LOG.E (TAG, "malformedurlexception e");   }catch  (exception e)  {   e.printstacktrace ();   }finally{       if (urlconnection!=null) {    urlconnection.disconnect () ; &NBSP;&NBSP;&NBSP;}&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;}&NBSP;&NBSP;LOG.E (TAG, "post  request returned to null");   return null; }

Android http HttpURLConnection