HttpURLConnection Tool class for accessing the server using Get and post (i)

First we have an interface that returns a response Httpcallbacklistener

 Public  Interface   Httpcallbacklistener {    void  onfinish (String response);     void OnError (Exception e);}

And then the main body of the tool class.

ImportAndroid.util.Log;ImportOrg.json.JSONObject;ImportJava.io.BufferedReader;ImportJava.io.DataOutputStream;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;Importjava.net.HttpURLConnection;ImportJava.net.URL;ImportJava.net.URLEncoder;ImportJava.util.Map; Public classHttputil {//using the Get method, path stores a URL, and map stores a key-value pair     Public Static voidSendhttprequestforget (FinalString Path,Finalmap<string,string> params,FinalHttpcallbacklistener Listener) {        NewThread (NewRunnable () {@Override Public voidrun () {httpurlconnection connection=NULL; Try{StringBuilder StringBuilder=NewStringBuilder (); StringBuilder Response=NewStringBuilder (); Stringbuilder.append (Path). Append ("?"); if(params!=NULL&&params.size ()!=0){                         for(map.entry<string,string>Entry:params.entrySet ()) {                            //convert into UTF-8Stringbuilder.append (Entry.getkey ()). Append ("="). Append (Urlencoder.encode (Entry.getvalue (), "Utf-8")); Stringbuilder.append ("&"); }                        //Delete last character &Stringbuilder.deletecharat (Stringbuilder.length ()-1); }                    //The URL is longer, adding content from the mapURL url=NewURL (stringbuilder.tostring ()); //Print URLsLOG.E ("Httputil", stringbuilder.tostring ()); Connection=(HttpURLConnection) url.openconnection (); Connection.setrequestmethod ("GET"); Connection.setconnecttimeout (100000); Connection.setreadtimeout (100000); Connection.setrequestproperty ("Content-type", "Application/json"); //200 indicates successful connection                    if(Connection.getresponsecode () ==200) {InputStream in=Connection.getinputstream (); BufferedReader Reader=NewBufferedReader (NewInputStreamReader (In, "Utf-8"));                        String Line;  while((Line=reader.readline ())! =NULL) {response.append (line); }                    }Else{System.out.println (Connection.getresponsecode ()); LOG.E ("Httputil", "fail"); }                    if(listener!=NULL) {LOG.E ("Httputil", response.tostring ()); //converts a response to a string type and then passes in as a parameter in order to invoke his class accessListener.onfinish (response.tostring ()); }                }Catch(Exception e) {if(listener!=NULL) {listener.onerror (e); }                }finally {                    if(connection!=NULL) {connection.disconnect ();    }}}). Start (); }     Public Static voidSendhttprequestforpost (FinalString Path,FinalMap<string,string> Paramsvalue,FinalHttpcallbacklistener Listener) {        NewThread (NewRunnable () {@Override Public voidrun () {httpurlconnection connection=NULL; Try{StringBuilder response=NewStringBuilder (); Jsonobject Jsonobject=NewJsonobject ();  for(map.entry<string,string>Entry:paramsValue.entrySet ())                    {Jsonobject.put (Entry.getkey (), Entry.getvalue ()); } URL URL=NewURL (path); Connection=(HttpURLConnection) url.openconnection (); Connection.setrequestmethod ("POST"); Connection.setconnecttimeout (100000); Connection.setreadtimeout (100000); Connection.setdooutput (true); Connection.setdoinput (true); //You must remember this setrequestproperty.Connection.setrequestproperty ("Content-type", "Application/json;charset=utf-8"); LOG.D ("Httputil", jsonobject.tostring ()); //write data to the serverDataOutputStream out=NewDataOutputStream (Connection.getoutputstream ());                    Out.writebytes (Jsonobject.tostring ()); LOG.D ("Httputil", jsonobject.tostring ()); //Success                    if(Connection.getresponsecode () ==200) {LOG.D ("Httputil", "Success"); InputStream in=Connection.getinputstream (); BufferedReader Reader=NewBufferedReader (NewInputStreamReader (In, "Utf-8"));                        String Line;  while((Line=reader.readline ())! =NULL) {response.append (line); }                    }Else{LOG.E ("Httputil", Integer.tostring (Connection.getresponsecode ())); LOG.E ("Httputil", "fail"); }                    if(listener!=NULL) {LOG.E ("Httputil", "registered successfully"); LOG.E ("Httputil", response.tostring ());                    Listener.onfinish (Response.tostring ()); }                }Catch(Exception e) {if(listener!=NULL) {LOG.D ("Httputil", E.getmessage ());                    Listener.onerror (e); }                }finally {                    if(connection!=NULL) {connection.disconnect ();    }}}). Start (); }}

Let's say we're going to visit in Mainactivity.

New Httpcallbacklistener () {                            @Override                            publicvoid  onfinish (String response) {                                 // It's a lot easier when you get response .                             }                            @Override                            publicvoid  onError (Exception e) {                            }                        } );

HttpURLConnection Tool class for accessing the server using Get and post (i)