Several realization ways of httpclient

1. Access the Web service using Java native HttpURLConnection.

public class Rtbclient {
	private String url = <a target=_blank href= "http://localhost" >http://localhost</a >;
	Private String port = "8080";
	Private String Path = "/rtbserver/rtbserver";

	
	Public rtbclient () {} public result[] get (dspcontext DC) {if (null = = DC) {return null;
		URL url = null;
		HttpURLConnection urlconn = null;
			try {url = new URL (this.url + ":" + This.port + this.path);
			Urlconn = (httpurlconnection) url.openconnection ();
			Urlconn.setdooutput (TRUE);
			Urlconn.setdoinput (TRUE);
			Urlconn.setusecaches (FALSE);
			Urlconn.setrequestproperty ("Content-type", "Application/x-java-serialized-object");
			Urlconn.setrequestmethod ("POST");
		Urlconn.connect ();
		} catch (Malformedurlexception E1) {e1.printstacktrace ();
		} catch (Protocolexception E1) {e1.printstacktrace ();
		} catch (IOException E1) {e1.printstacktrace ();
			} try {OutputStream outstrm = Urlconn.getoutputstream ();
			ObjectOutputStream oos = new ObjectOutputStream (OUTSTRM);
			Oos.writeobject (DC);
			Oos.flush ();
		Oos.close ();
		} catch (IOException E1) {e1.printstacktrace ();
		} result[] Result; try {InputStream INSTRM = Urlconn.getinputstream ();	
			ObjectInputStream ois = new ObjectInputStream (INSTRM);
		result = (result[]) (Ois.readobject ());
		} catch (ClassNotFoundException e) {e.printstacktrace ();
		} catch (Eofexception e) {e.printstacktrace ();
		} catch (IOException E1) {e1.printstacktrace ();
		} urlconn.disconnect ();
	return null; }
}

2. Use the Apache HttpClient package to access the Web service.

public class Rtbclient {private String address = null;
	private int connreqtimeout = 5000;
	private int conntimeout = 5000;
	private int sotimeout = 5000;
	private int maxconn = 100; 
	Private HttpClient HttpClient = null;

	Poolinghttpclientconnectionmanager Connmanager = null; Public Rtbclient (String address, int connreqtimeout, int conntimeout, int sotimeout, int maxconn) {this.address = Addre
		ss
		This.connreqtimeout = Connreqtimeout;
		This.conntimeout = Conntimeout;
		This.sotimeout = SoTimeout;
		This.maxconn = Maxconn; Requestconfig requestconfig = Requestconfig.custom (). Setconnecttimeout (This.conntimeout).
		Setconnectionrequesttimeout (this.connreqtimeout). SetSocketTimeout (This.sotimeout). build ();
		This.connmanager = new Poolinghttpclientconnectionmanager ();
		This.connManager.setMaxTotal (This.maxconn); This.httpclient = Httpclientbuilder.create (). Setconnectionmanager (This.connmanager). SetDefaultRequestConfig (
	Requestconfig). build (); } public void SendReq (String str) {HttpPost post = new HttpPost (address); 

                  httpentity entity = new stringentity (str);

                  Post.setentity (entity);					

	         HttpResponse response;
		try {
			response = This.httpClient.execute (post);      
			if (null! = response) {
				System.out.println (Response.getstatusline (). Getstatuscode ());
			}
		} catch ( Httphostconnectexception e) {
			logger.error ("Client can not connect server!", e);
			E.printstacktrace ();
		} catch (Exception e) {
			logger.error ("RTB client Get method Invoke exception!", e);
			E.printstacktrace ();
		}
		
		return;
	}
	
}