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Posted to xmlrpc-dev@ws.apache.org by Peter Valencic <pe...@siol.net> on 2007/07/27 01:12:56 UTC
Simple Question about RPC in java
Hello to all...
I'am asking for a help..
I'am new in RPC but what i would like to do is... the rpc server and
both methods in the same class..
for example... I have the class which name is TimerTest...
If you look this class you can see that I have declared the RPC server...
What I need is (if is possible) using methods like "add" from the same
class..
I have declared:
PropertyHandlerMapping phm = new PropertyHandlerMapping();
phm.addHandler("TimerTest", TimerTest.class); <-- the same class..
but when I run client program I get Exception:
-----------
Exception in thread main
org.apache.xmlrpc.XmlRpcException: Failed to create input stream:
Connection refused: connect
at org.apache.xmlrpc.XmlRpcException.<init>(XmlRpcException.java:59)
at
org.apache.xmlrpc.client.XmlRpcSunHttpTransport.getInputStream(XmlRpcSunHttpTransport.java:60)
at
org.apache.xmlrpc.client.XmlRpcStreamTransport.sendRequest(XmlRpcStreamTransport.java:141)
at
org.apache.xmlrpc.client.XmlRpcHttpTransport.sendRequest(XmlRpcHttpTransport.java:93)
at
org.apache.xmlrpc.client.XmlRpcSunHttpTransport.sendRequest(XmlRpcSunHttpTransport.java:39)
at
org.apache.xmlrpc.client.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:53)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:166)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:136)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:125)
at virtualmaster.test.Client.main(Client.java:15)
Caused by:
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.Socket.connect(Socket.java:507)
at java.net.Socket.connect(Socket.java:457)
at sun.net.NetworkClient.doConnect(NetworkClient.java:157)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:365)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:477)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:565)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:936)
at
org.apache.xmlrpc.client.XmlRpcSunHttpTransport.getInputStream(XmlRpcSunHttpTransport.java:58)
at
org.apache.xmlrpc.client.XmlRpcStreamTransport.sendRequest(XmlRpcStreamTransport.java:141)
at
org.apache.xmlrpc.client.XmlRpcHttpTransport.sendRequest(XmlRpcHttpTransport.java:93)
at
org.apache.xmlrpc.client.XmlRpcSunHttpTransport.sendRequest(XmlRpcSunHttpTransport.java:39)
at
org.apache.xmlrpc.client.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:53)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:166)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:136)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:125)
at virtualmaster.test.Client.main(Client.java:15)
-----------------------------------
This is my ServerSide app:
package virtualmaster.test;
//~--- non-JDK imports
--------------------------------------------------------
import org.apache.xmlrpc.server.PropertyHandlerMapping;
import org.apache.xmlrpc.server.XmlRpcServer;
import org.apache.xmlrpc.server.XmlRpcServerConfigImpl;
import org.apache.xmlrpc.webserver.WebServer;
//~--- JDK imports
------------------------------------------------------------
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.BindException;
import java.util.Date;
import java.util.List;
import java.util.Random;
import javax.swing.Timer;
//~--- classes
----------------------------------------------------------------
public class TimerTest {
int port = 6666; // RPC port
//~--- constructors
-------------------------------------------------------
public TimerTest() {
try {
WebServer webServer = new WebServer(port);
XmlRpcServer xmlRpcServer =
webServer.getXmlRpcServer();
PropertyHandlerMapping phm = new
PropertyHandlerMapping();
phm.addHandler("TimerTest", TimerTest.class);
xmlRpcServer.setHandlerMapping(phm);
XmlRpcServerConfigImpl serverConfig =
(XmlRpcServerConfigImpl) xmlRpcServer.getConfig();
serverConfig.setEnabledForExtensions(true);
serverConfig.setContentLengthOptional(false);
webServer.start();
System.out.println("RPC-Server started on localhost port: "
+ port);
} catch (Exception e) {
if (timer != null) {
timer.stop();
}
System.out.println("Err: " + e.toString());
System.exit(1);
}
}
//~--- methods
------------------------------------------------------------
public static void main(String[] args) {
TimerTest timerTest = new TimerTest();
}
//this is my rpc procedure i like to use...
public int add(int a,int b) {
return a+b;
}
}
---------------------------------------------------------------------------
this is my Client app:
import java.net.URL;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
public class Client {
public static void main(String[] args) throws Exception {
XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
config.setServerURL(new URL("http://localhost:6666/xmlrpc"));
XmlRpcClient client = new XmlRpcClient();
client.setConfig(config);
Object[] params = new Object[]{new Integer(33), new
Integer(9)};
Integer result = (Integer) client.execute("TimerTest.add",
params);
System.out.println(result.toString());
}
}
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Re: Simple Question about RPC in java
Posted by Kevin Brown <ke...@air2web.com>.
What interface is the server running on? 192.168.x.x, 0.0.0.0 or
127.0.0.1? What OS? Wireshark and netstat are your friends.
Jochen Wiedmann wrote:
> On 7/27/07, Peter Valencic <pe...@siol.net> wrote:
>
>
>> Connection refused: connect
>> at org.apache.xmlrpc.XmlRpcException.<init>(XmlRpcException.java:59)
>>
>
> Sounds like the server is not running, or is running on another host
> than localhost, or is running on another port like 6666, or the client
> is not configured to use port 6666 or not localhost. (The latter might
> be possible, for example, if you are using a proxy server.)
>
> Jochen
>
>
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Re: Simple Question about RPC in java
Posted by Jochen Wiedmann <jo...@gmail.com>.
On 7/27/07, Peter Valencic <pe...@siol.net> wrote:
> Connection refused: connect
> at org.apache.xmlrpc.XmlRpcException.<init>(XmlRpcException.java:59)
Sounds like the server is not running, or is running on another host
than localhost, or is running on another port like 6666, or the client
is not configured to use port 6666 or not localhost. (The latter might
be possible, for example, if you are using a proxy server.)
Jochen
--
"Besides, manipulating elections is under penalty of law, resulting in
a preventative effect against manipulating elections.
The german government justifying the use of electronic voting machines
and obviously believing that we don't need a police, because all
illegal actions are forbidden.
http://dip.bundestag.de/btd/16/051/1605194.pdf
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