HttpClient Connection Pool

 PackageCn.com.cfets.imt.impl.spring.util;Importorg.apache.http.HeaderElement;ImportOrg.apache.http.HeaderElementIterator;ImportOrg.apache.http.HttpResponse;Importorg.apache.http.client.ClientProtocolException;ImportOrg.apache.http.client.config.RequestConfig;ImportOrg.apache.http.client.methods.HttpGet;ImportOrg.apache.http.client.methods.HttpPost;Importorg.apache.http.client.methods.HttpRequestBase;ImportOrg.apache.http.conn.ConnectionKeepAliveStrategy;Importorg.apache.http.entity.ByteArrayEntity;Importorg.apache.http.impl.client.CloseableHttpClient;Importorg.apache.http.impl.client.HttpClients;ImportOrg.apache.http.impl.conn.PoolingHttpClientConnectionManager;ImportOrg.apache.http.message.BasicHeaderElementIterator;ImportOrg.apache.http.protocol.HTTP;ImportOrg.apache.http.protocol.HttpContext;ImportOrg.slf4j.Logger;Importorg.slf4j.LoggerFactory;Importorg.springframework.util.StringUtils;Importjava.io.IOException;ImportJava.net.URI;Importjava.net.URISyntaxException;ImportJava.net.URL;ImportJava.util.Map;/*** Connection Pool * Created by fenglei.ma on 2018/5/23.17:54*/ Public classHttpclientutils {Private Static FinalLogger log = Loggerfactory.getlogger (httpclientutils.class);  Public Static intConnect_time = 3 * 1000;  Public Static intSocket_time = 3 * 1000;//milliseconds     Public Static intRequest_time = 3 * 1000; //whether to re-connect     Public StaticString isreconn = "N"; //this is used to increase throughput by using connection pooling to prevent high concurrent large requests     Public StaticPoolinghttpclientconnectionmanager cm =NULL; //Use the default HttpClient instance.     Public StaticCloseablehttpclient httpClient =NULL; //maximum number of connections per route    Private Static Final intCount = 32; //maximum number of connections for the entire connection pool    Private Static Final intTotalCount = 500; Private Static Final intHttp_default_keep_time =15000;  Public Static synchronized voidInitpools () {if(HttpClient = =NULL) {cm=NewPoolinghttpclientconnectionmanager ();            Cm.setdefaultmaxperroute (count);            Cm.setmaxtotal (TotalCount); //Disable redirection setredirectsenabled (boolean.false)            if("Y". Equalsignorecase (Isreconn)) {httpClient=Httpclients.custom (). Setdefaultrequestconfig (Requestconfig.custom (). setredirectsenabled (Boole An.            FALSE). Build ()). Setkeepalivestrategy (Defaultstrategy). Setconnectionmanager (CM). Build (); }Else if("N". Equalsignorecase (isreconn) | |Stringutils.isempty (Isreconn)) {                /*** automaticretriesdisabled Type is Boolean, default value is False, * set to True here, disable retry Connection 3 times */httpClient=Httpclients.custom (). Setdefaultrequestconfig (Requestconfig.custom (). setredirectsenabled (Boole An. FALSE). Build ()). Setkeepalivestrategy (Defaultstrategy). Setconnectionmanager (cm). Disableautomaticretries (). b            Uild (); }        }    }    /*** Configure timeout settings for requests *@paramHttprequestbase*/    Private Static voidconfig (httprequestbase httprequestbase) {requestconfig requestconfig=Requestconfig.custom (). Setconnectionrequesttimeout (Request_time). Setconnecttimeout (CO        nnect_time). SetSocketTimeout (Socket_time). build ();    Httprequestbase.setconfig (Requestconfig); }    /*** Http connection keepAlive Settings*/     Public StaticConnectionkeepalivestrategy Defaultstrategy =NewConnectionkeepalivestrategy () { Public Longgetkeepaliveduration (HttpResponse response, HttpContext context) {Headerelementiterator it=NewBasicheaderelementiterator (Response.headeriterator (HTTP.            conn_keep_alive)); intKeeptime =Http_default_keep_time;  while(It.hasnext ()) {headerelement He=it.nextelement (); String param=He.getname (); String value=He.getvalue (); if(Value! =NULL&& param.equalsignorecase ("timeout")) {                    Try {                        returnLong.parselong (value) * 1000; } Catch(Exception e) {log.error ("Format KeepAlive timeout exception, exception:" +e.tostring ()); }                }            }            returnKeeptime * 1000;    }    }; /*** Get Request *@paramPath Request URL *@paramJsonparam Request Parameters *@paramAllheader Request Header *@return     */     Public StaticHttpResponse executegetmothedrequest (string path, String Jsonparam, Map<string, string>Allheader) {HttpGet HttpGet=NULL; HttpResponse Response=NULL; Try {            if(!Stringutils.isempty (Jsonparam)) {Path= Path + "?" +Jsonparam;            Log.info (path); } URL URL=NewURL (path); Uri URI=NewURI (Url.getprotocol (),NULL, Url.gethost (), Url.getport (), Url.getpath (), Url.getquery (),NULL); HttpGet=NewHttpGet (URI); Httpget.setheader ("Content-type", "Application/json");  for(Map.entry<string, string>E:allheader.entryset ())            {Httpget.setheader (E.getkey (), E.getvalue ()); }            if(HttpClient = =NULL) {initpools ();            } config (httpget); Response=Httpclient.execute (HttpGet); } Catch(Exception e) {log.error (E.getmessage (), E); }        returnresponse; }    /*** Post Request *@paramURL Request URL *@paramBody Request Data *@paramParamjson Request Parameters *@paramAllheade Request message Header *@return     */     Public StaticHttpResponse executepostmothedrequest (String URL,byte[] body, String Paramjson, map<string, string>Allheade) {HttpPost HttpPost=NULL; HttpResponse Response=NULL; Try {            if(!Stringutils.isempty (Paramjson)) {URL= URL + "?" +Paramjson;            Log.info (URL); } HttpPost=Newhttppost (URL); //message Header             for(Map.entry<string, string>E:allheade.entryset ()) {//Httppost.setheader ("Content-type", "Application/json");Httppost.setheader (E.getkey (), E.getvalue ()); }            //include upload file data            if(!Stringutils.isempty (body)) {//Httppost.setheader ("Content-type", "Application/json");Httppost.setentity (Newbytearrayentity (body)); }            if(HttpClient = =NULL) {initpools ();            } config (httppost); Response=Httpclient.execute (HttpPost); if(Response.getstatusline (). Getstatuscode () >= 400) {Log.warn ("Failed:http Error code:" +response.getstatusline (). Getstatuscode ()); }        } Catch(Exception e) {log.error (E.getmessage (), E); }        returnresponse; }}

HttpClient Connection Pool