Encapsulating httpclient for HTTP requests and HTTPS requests

One. HTTPS ignores certificates

/*** HttpClient for HTTPS requests * *@authorJoey **/ Public classsslclient { Public Staticcloseablehttpclient Createsslclientdefault () {Try{sslcontext Sslcontext=NewSslcontextbuilder (). Loadtrustmaterial (NULL,NewTruststrategy () {//Trust all                 Public BooleanIsTrusted (x509certificate[] chain, String authtype)throwscertificateexception {return true;            }}). Build (); Sslconnectionsocketfactory SSLSF=Newsslconnectionsocketfactory (Sslcontext); returnHttpclients.custom (). Setsslsocketfactory (SSLSF). build (); } Catch(keymanagementexception e) {e.printstacktrace (); } Catch(nosuchalgorithmexception e) {e.printstacktrace (); } Catch(keystoreexception e) {e.printstacktrace (); }        returnHttpclients.createdefault (); }}

Two. Post and GET requests

/*** Using HttpClient's tool class * *@authorJoey **/ Public classHttpclientutil {Private StaticString CharSet = "UTF-8"; Private StaticCloseablehttpclient httpClient =NULL; Private StaticCloseablehttpresponse response =NULL; /*** POST request for HTTPS *@paramURL *@paramJsonstr *@paramCharSet *@return     */     Public Staticstring dohttpspost (string url, string jsonstr) {Try{httpClient=Sslclient.createsslclientdefault (); HttpPost HttpPost=Newhttppost (URL); Httppost.setheader ("Content-type", "Application/json"); Stringentity SE=Newstringentity (JSONSTR); Se.setcontenttype ("Text/json"); Se.setcontentencoding (NewBasicheader ("Content-type", "Application/json"));                        Httppost.setentity (SE); Response=Httpclient.execute (HttpPost); if(Response! =NULL) {httpentity resentity=response.getentity (); if(Resentity! =NULL) {                    returnentityutils.tostring (resentity, CharSet); }            }        } Catch(Exception ex) {ex.printstacktrace (); }finally {             if(HttpClient! =NULL){                    Try{httpclient.close (); } Catch(IOException e) {e.printstacktrace (); }                }                if(Response! =NULL){                    Try{response.close (); } Catch(IOException e) {e.printstacktrace (); }                }        }        return NULL; }        /*** HTTP POST request (Parameters for Key-value format) *@paramURL *@paramparam *@return     */     Public StaticString Dohttppost (String url,map<string,string>param) {        Try {            //request to initiate clientHttpClient =Httpclients.createdefault (); //Parameter CollectionList<namevaluepair> Postparams =NewArraylist<namevaluepair>(); //traversing parameters and adding to the collection             for(Map.entry<string, string>Entry:param.entrySet ()) {Postparams.add (NewBasicnamevaluepair (Entry.getkey (), Entry.getvalue ())); }                        //access via postHttpPost post =Newhttppost (URL); Httpentity paramentity=Newurlencodedformentity (Postparams,charset);            Post.setentity (paramentity); Response=Httpclient.execute (POST); Statusline Status=Response.getstatusline (); intState =Status.getstatuscode (); if(state = =HTTPSTATUS.SC_OK) {httpentity valueentity=response.getentity (); String content=entityutils.tostring (valueentity); //jsonobject = jsonobject.fromobject (content);                returncontent; }        } Catch(unsupportedencodingexception e) {e.printstacktrace (); } Catch(clientprotocolexception e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); }finally{            if(HttpClient! =NULL){                Try{httpclient.close (); } Catch(IOException e) {e.printstacktrace (); }            }            if(Response! =NULL){                Try{response.close (); } Catch(IOException e) {e.printstacktrace (); }            }        }        return NULL; }         /*** HTTP POST request (to request JSON-formatted parameters) *@paramURL *@paramparams *@return      */       Public Staticstring dohttppost (string url, string jsonstr) {Try{httpClient=Httpclients.createdefault (); //Create HttpPostHttpPost HttpPost =Newhttppost (URL); Httppost.setheader ("Accept", "Application/json"); Stringentity Entity=Newstringentity (Jsonstr, CharSet); Entity.setcontenttype ("Text/json"); Entity.setcontentencoding (NewBasicheader ("Content-type", "Application/json"));                      Httppost.setentity (entity); //send a POST requestResponse =Httpclient.execute (HttpPost); if(Response.getstatusline (). Getstatuscode () = =HTTPSTATUS.SC_OK) {httpentity responseentity=response.getentity (); String jsonstring=entityutils.tostring (responseentity); returnjsonstring; }        }Catch(Exception e) {e.printstacktrace (); }finally {            if(HttpClient! =NULL){                Try{httpclient.close (); } Catch(IOException e) {e.printstacktrace (); }            }            if(Response! =NULL){                Try{response.close (); } Catch(IOException e) {e.printstacktrace (); }            }        }          return NULL; }          /*** HTTP GET request *@paramURL *@paramparam *@return     */     Public StaticString Dohttpget (String url,map<string,string>param) {closeablehttpclient httpclient=NULL; Closeablehttpresponse Response=NULL; Try{httpclient=Httpclients.createdefault (); if(param! =NULL&&!Param.isempty ()) {                //Parameter CollectionList<namevaluepair> Getparams =NewArraylist<namevaluepair>();  for(Map.entry<string, string>Entry:param.entrySet ()) {Getparams.add (NewBasicnamevaluepair (Entry.getkey (), Entry.getvalue ())); } URL+="?" +entityutils.tostring (NewUrlencodedformentity (Getparams), "UTF-8"); }            //Send Gey RequestHttpGet HttpGet =Newhttpget (URL); Response=Httpclient.execute (HttpGet); if(Response.getstatusline (). Getstatuscode () = =HTTPSTATUS.SC_OK) {                  returnentityutils.tostring (Response.getentity ()); }         }Catch(Exception e) {e.printstacktrace (); }finally{            if(HttpClient! =NULL){                Try{httpclient.close (); } Catch(IOException e) {e.printstacktrace (); }            }            if(Response! =NULL){                Try{response.close (); } Catch(IOException e) {e.printstacktrace (); }            }        }        return NULL; }    }

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Encapsulating httpclient for HTTP requests and HTTPS requests