Tool for Android to encapsulate HTTP requests

Import  Java. Io. bufferedreader;  Import  Java. Io. inputstreamreader;  Import  Java.net. urlencoder;  Import  Java. Security. keystore;  Import  Java. util. iterator;  Import  Java. util. List;  Import  Java. util. Map;  Import Java. util. Map. entry;  Import  Org. Apache. http. httpresponse;  Import  Org. Apache. http. httpversion;  Import  Org. Apache. http. Client. httpclient;  Import  Org. Apache. http. Client. entity. urlencodedformentity;  Import  Org. Apache. http. Client. Methods. httpget;  Import  Org. Apache. http. Client. Methods. httppost;  Import Org. Apache. http. Conn. clientconnectionmanager;  Import  Org. Apache. http. Conn. scheme. plainsocketfactory;  Import  Org. Apache. http. Conn. scheme. scheme;  Import  Org. Apache. http. Conn. scheme. schemeregistry;  Import  Org. Apache. http. Conn. SSL. sslsocketfactory;  Import  Org. Apache. http. impl. Client. defaulthttpclient;  Import Org. Apache. http. impl. Conn. tsccm. threadsafeclientconnmanager;  Import  Org. Apache. http. Message. basicnamevaluepair;  Import  Org. Apache. http. Params. basichttpparams;  Import  Org. Apache. http. Params. httpparams;  Import  Org. Apache. http. Params. httpprotocolparams;  Import  Org. Apache. http. Protocol. HTTP;  Import  Org. Apache. http. util. entityutils; Import  Android. content. context;  Import  Android.net. connectivitymanager;  /**  * Network tool **  @ Author  Malinkang *  */  Public   Class  Netutils {  /**  * Determine the network connection status **  @ Return True, available; false, unavailable  */      Public   Static   Boolean  Isopennetwork (context) {connectivitymanager connmanager = (Connectivitymanager) Context. getsystemservice (context. connectivity_service );  If (Connmanager. getactivenetworkinfo ()! = Null  ){  Return  Connmanager. getactivenetworkinfo (). isavailable ();} Return   False  ;}  /**  * GET request **  @ Param  Urlstring *  @ Param  Params *  @ Return       */      Public   Static String getrequest (string urlstring, Map <string, string> Params ){  Try {Stringbuilder urlbuilder = New  Stringbuilder (); urlbuilder. append (urlstring );  If ( Null ! = Params) {urlbuilder. append ( "? " ); Iterator <Entry <string, string> iterator = Params. entryset (). iterator ();  While  (Iterator. hasnext () {entry <String, string> param =Iterator. Next (); urlbuilder. append (urlencoder. encode (Param. getkey (), UTF-8" ). Append ( '=' ). Append (urlencoder. encode (Param. getvalue (), UTF-8" ));  If  (Iterator. hasnext () {urlbuilder. append ( '&' );}}}  //  Create an httpclient object Httpclient client =Getnewhttpclient ();  //  Create an httpget object by sending a GET request Httpget getmethod = New  Httpget (urlbuilder. tostring (); httpresponse response = Client.exe cute (getmethod );  //  Get status code              Int Res = Response. getstatusline (). getstatuscode ();  If (RES = 200 ) {Stringbuilder Builder =New  Stringbuilder ();  //  Get Response content Bufferedreader reader = New  Bufferedreader (  New  Inputstreamreader (response. getentity (). getcontent ()));  For (String S = reader. Readline (); s! = Null ; S = Reader. Readline () {builder. append (s );} Return  Builder. tostring ();}}  Catch  (Exception e ){}  Return   Null  ;}  /**  * POST request **  @ Param  Urlstring *  @ Param  Params *  @ Return       */      Public  Static  String postrequest (string urlstring, list <Basicnamevaluepair> Params ){  Try  {  //  1. Create an httpclient object Httpclient client = Getnewhttpclient ();  //  2. Send a GET request to create an httpget object Httppost postmethod = New  Httppost (urlstring); postmethod. setentity ( New  Urlencodedformentity (Params, HTTP. utf_8); httpresponse response = Client.exe cute (postmethod );  Int Statuecode = Response. getstatusline (). getstatuscode ();  If (Statuecode = 200 ) {System. Out. println (statuecode );  Return  Entityutils. tostring (response. getentity ());}}  Catch  (Exception e ){} Return   Null  ;}  //  When saving + the current number of seconds,      Public   Static   Long  Expires (string second) {long l = Long. valueof (second );  Return L * 1000l + System. currenttimemillis ();}  Private   Static Httpclient getnewhttpclient (){  Try  {Keystore truststore = Keystore. getinstance (keystore. getdefaulttype (); truststore. Load (  Null , Null  ); Sslsocketfactory SF = New  Sslsocketfactoryex (truststore); SF. sethostnameverifier (sslsocketfactory. allow_all_hostname_verifier); httpparams Params = New Basichttpparams (); httpprotocolparams. setversion (Params, httpversion. http_1_1); httpprotocolparams. setcontentcharset (Params, HTTP. utf_8); schemeregistry Registry = New  Schemeregistry (); Registry. Register (  New Scheme ("HTTP" , Plainsocketfactory. getsocketfactory (), 80 ); Registry. Register (  New Scheme ("HTTPS", SF, 443 ); Clientconnectionmanager CCM = New Threadsafeclientconnmanager (Params, registry );  Return   New  Defaulthttpclient (CCM, Params );}  Catch  (Exception e ){  Return   New  Defaulthttpclient ();}}} 

 

Another encapsulated GET request is frequently used recently:

 Public   Class  Httputils {  Private  Final   Static String tag = "easytokensevice" ;  Private   Final   Static   Int Connectiontimeout = 5000 ;  Private   Static Inputstream = Null  ;  Private   Static String urlstr = Null ;  Private   Static   Boolean  Isconnecting;  /**  * Encapsulate http get requests **  @ Param  URL *  @ Return  Is  */      Public   Static Inputstream get (string URL) Throws Ioexception, exception {urlstr = URL; isconnecting = True  ; Httpget = New  Httpget (urlstr); httpparams httpparameters = New  Basichttpparams (); httpconnectionparams. setconnectiontimeout (httpparameters, connectiontimeout); defaulthttpclient httpclient = New  Defaulthttpclient (httpparameters); httpresponse response =Httpclient.exe cute (httpget );  If (Response. getstatusline (). getstatuscode () = Httpstatus. SC _ OK) {httpentity entity = Response. getentity (); inputstream = Entity. getcontent ();  Return  Inputstream ;}  Else   Return   Null  ;}}