HTTP connection Pooling

　　　　 <context:property-placeholder location= "classpath:conf/framework/httpclient.properties"/><!--define Connection Manager-- ><bean id= "Httpclientconnectionmanager" class= " Org.apache.http.impl.conn.PoolingHttpClientConnectionManager "destroy-method=" close "><!--maximum number of connections-->< Property Name= "Maxtotal" value= "${http.maxtotal}"/><!--set the number of concurrency per host address--><property name= " Defaultmaxperroute "value=" ${http.defaultmaxperroute} "/></bean><!--httpclient Object Builder--><bean id= "Httpclientbuilder" class= "Org.apache.http.impl.client.HttpClientBuilder" ><!--setting up Connection Manager--><property Name= "ConnectionManager" ref= "httpclientconnectionmanager"/></bean><!--definition HttpClient Object--><bean Id= "HttpClient" class= "org.apache.http.impl.client.CloseableHttpClient" factory-bean= "Httpclientbuilder" Factory-method= "Build" scope= "prototype" ></bean><!--definition Cleanup Invalid connection--><bean class= " Com.avcon.platform.dledc.res.service.IdleConnectionEvictor "destroy-method=" sHutdown "><constructor-arg index=" 0 "ref=" Httpclientconnectionmanager "/></bean><bean id=" Requestconfigbuilder "class=" Org.apache.http.client.config.RequestConfig.Builder "><!--the maximum time to create a connection-->< Property Name= "ConnectTimeout" value= "${http.connecttimeout}"/><!--get the maximum connection time from the connection pool--><property name= " Connectionrequesttimeout "value=" ${http.connectionrequesttimeout} "/><!--data transfer for maximum time--><property name=" Sockettimeout "value=" ${http.sockettimeout} "/><!--to test if the connection is available before submitting the request--><property Name=" Staleconnectioncheckenabled "value=" ${http.staleconnectioncheckenabled} "/></bean><!--define request Parameters-- <bean id= "Requestconfig" class= "Org.apache.http.client.config.RequestConfig" factory-bean= " Requestconfigbuilder "factory-method=" "Build" ></bean>

@Servicepublic class Httpclientservice {@Autowiredprivate closeablehttpclient httpClient; @Autowiredprivate Requestconfig requestconfig;/** * Execute GET request * * @param URL * @return * @throws IOException * @throws clientprotocolexceptio n */public string doget (string url) throws Clientprotocolexception, IOException {//create HTTP GET request HttpGet HttpGet = new http Get (URL); httpget.setconfig (This.requestconfig); Closeablehttpresponse response = null;try {//execute request response = Httpclient.execute (httpget);//Determine if the return status is 200if ( Response.getstatusline (). Getstatuscode () = = () {return entityutils.tostring (response.getentity (), "UTF-8");}} Finally {if (response! = null) {Response.close ();}} return null;} /** * GET request with parameters * * @param URL * @param params * @return * @throws urisyntaxexception * @throws IOException * @throws Cl Ientprotocolexception */public string doget (string url, map<string, string> params) throws Clientprotocolexception, IOException, urisyntaxexception {uribuilder uribuilder = new UriBuilder (URL); for (String Key:params.keySet ()) {Uribuilder.addparameter (key, Params.get (key));} Return This.doget (Uribuilder.build (). toString ());} /** * Perform POST request * * @param URL * @param params * @return * @throws ioexception */public httpresult doPost (String URL, map& Lt String, string> params) throws IOException {//create HTTP POST request HttpPost HttpPost = new HttpPost (URL); Httppost.setconfig (t His.requestconfig); if (params! = null) {//Set 2 post parameters, one is scope, one is qlist<namevaluepair> parameters = new ArrayList <NameValuePair> (); for (String Key:params.keySet ()) {Parameters.Add (New Basicnamevaluepair (Key, Params.get (key )));} Construct a form-form entity urlencodedformentity formentity = new Urlencodedformentity (Parameters, "UTF-8");// Set the request entity to the HttpPost object Httppost.setentity (formentity);} Closeablehttpresponse response = null;try {//execute request response = Httpclient.execute (HttpPost); return new Httpresult ( Response.getstatusline (). Getstatuscode (), Entityutils.tostring (Response.getentity (), "UTF-8")); finally {if (responSE = null) {Response.close ();}}} /** * Execute POST request * * @param URL * @return * @throws ioexception */public httpresult doPost (String url) throws IOException { Return this.dopost (URL, null);} /** * Submit JSON data * * @param URL * @param JSON * @return * @throws clientprotocolexception * @throws ioexception */public Ht Tpresult dopostjson (string URL, string json) throws Clientprotocolexception, IOException {//create HTTP POST request HttpPost Httppo st = new HttpPost (URL); httppost.setconfig (this.requestconfig); if (json! = NULL) {//Constructs a form-form entity stringentity stringentity = new Stringentity (JSON, Contenttype.application_json);//Set the request entity to the HttpPost object Httppost.setentity ( stringentity);} Closeablehttpresponse response = null;try {//execute request response = This.httpClient.execute (HttpPost); return new Httpresult ( Response.getstatusline (). Getstatuscode (), Entityutils.tostring (Response.getentity (), "UTF-8")); Finally {if (response! = null) {Response.close ();}}}

　　

HTTP connection Pooling