Fall Semester 2002
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Fall Semester 2002 |
I am going to create a folder xmlrpc for all the work:
Now, the question is: what do we put in there?frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman frilled.cs.indiana.edu%mkdir xmlrpc frilled.cs.indiana.edu%cd xmlrpc frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc frilled.cs.indiana.edu%ls -l total 0 frilled.cs.indiana.edu%
Take a look at this page:
and from it check the How-to (Eric Kidd's):http://www.xmlrpc.com
We are going to focus on Chapter 8: Using XML-RPC with Java.http://xmlrpc-c.sourceforge.net/xmlrpc-howto/xmlrpc-howto.html
Following the link for Hannes Wallnöfer's implementation:
we find out that Helma has moved, to become the Apache XML-RPC Project.http://classic.helma.at/hannes/xmlrpc/
Latest release of the project can be downloaded from this location:http://xml.apache.org/xmlrpc/
So far so good; what next?http://xml.apache.org/dist/xmlrpc/
Well, I download the following two files .
Here's my result:xmlrpc-1.1.tar.gz 06-Mar-2002 11:49 157K GZIP compressed file
xmlrpc-1.1.tar.gz.md5 06-Mar-2002 11:52 52 GZIP compressed file
Now, what do I do?frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc frilled.cs.indiana.edu%ls -l total 169 -rw------- 1 dgerman faculty 161173 Nov 28 22:17 xmlrpc-1.1.tar.gz -rw------- 1 dgerman faculty 52 Nov 28 22:17 xmlrpc-1.1.tar.gz.md5 frilled.cs.indiana.edu%
Here's what:
OK, let's not get overwhelmed, shall we?frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc frilled.cs.indiana.edu%ls -l total 169 -rw------- 1 dgerman faculty 161173 Nov 28 22:17 xmlrpc-1.1.tar.gz -rw------- 1 dgerman faculty 52 Nov 28 22:17 xmlrpc-1.1.tar.gz.md5 frilled.cs.indiana.edu%gunzip *.gz frilled.cs.indiana.edu%ls -l total 1345 -rw------- 1 dgerman faculty 1361920 Nov 28 22:17 xmlrpc-1.1.tar -rw------- 1 dgerman faculty 52 Nov 28 22:17 xmlrpc-1.1.tar.gz.md5 frilled.cs.indiana.edu%tar xvf *.tar xmlrpc-1.1/ xmlrpc-1.1/docs/ xmlrpc-1.1/docs/apidocs/ xmlrpc-1.1/docs/apidocs/org/ xmlrpc-1.1/docs/apidocs/org/apache/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/ xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/class-use/ xmlrpc-1.1/docs/images/ xmlrpc-1.1/README.txt xmlrpc-1.1/LICENSE xmlrpc-1.1/xmlrpc-1.1.jar xmlrpc-1.1/xmlrpc-1.1-applet.jar xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/package-tree.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClient.CallData.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClientLite.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClient.Worker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/AsyncCallback.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClientLite.HttpClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClientLite.LiteWorker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/AuthenticatedXmlRpcHandler.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/Echo.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/AuthDemo.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/Invoker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpc.Value.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/WebServer.AddressMatcher.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpc.XmlWriter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/ServerInputStream.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/WebServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/WebServer.Connection.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcServer.Worker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/Formatter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/WebServer.Runner.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcException.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpc.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcHandler.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/Base64.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/class-use/XmlRpcProxyServlet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/package-summary.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClientLite.LiteWorker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcServer.Worker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/Base64.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/SimpleXmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/XmlRpcSupport.Value.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/XmlRpcException.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/JSXmlRpcApplet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/XmlRpcApplet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/SimpleXmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/XmlRpcSupport.XmlWriter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/class-use/XmlRpcSupport.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/package-use.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/XmlRpcSupport.XmlWriter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/XmlRpcException.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/XmlRpcApplet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/package-tree.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/package-frame.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/package-summary.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/XmlRpcSupport.Value.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/JSXmlRpcApplet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/applet/XmlRpcSupport.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/SecureXmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/package-tree.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/package-frame.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/package-summary.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/class-use/SecureWebServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/class-use/SecureXmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/class-use/SecurityConstants.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/class-use/SecurityTool.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/SecureWebServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/SecurityConstants.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/SecurityTool.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/secure/package-use.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClient.CallData.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/WebServer.Runner.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/WebServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/ServerInputStream.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcProxyServlet.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/Echo.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcHandler.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/Formatter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/WebServer.Connection.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpc.Value.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/AsyncCallback.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClient.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcServer.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClient.Worker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClientLite.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/package-frame.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/Invoker.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/package-use.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/WebServer.AddressMatcher.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/AuthDemo.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcException.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/AuthenticatedXmlRpcHandler.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpc.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpc.XmlWriter.html xmlrpc-1.1/docs/apidocs/org/apache/xmlrpc/XmlRpcClientLite.HttpClient.html xmlrpc-1.1/docs/apidocs/stylesheet.css xmlrpc-1.1/docs/apidocs/overview-frame.html xmlrpc-1.1/docs/apidocs/index.html xmlrpc-1.1/docs/apidocs/help-doc.html xmlrpc-1.1/docs/apidocs/serialized-form.html xmlrpc-1.1/docs/apidocs/index-all.html xmlrpc-1.1/docs/apidocs/deprecated-list.html xmlrpc-1.1/docs/apidocs/overview-tree.html xmlrpc-1.1/docs/apidocs/overview-summary.html xmlrpc-1.1/docs/apidocs/packages.html xmlrpc-1.1/docs/apidocs/allclasses-frame.html xmlrpc-1.1/docs/apidocs/package-list xmlrpc-1.1/docs/client.html xmlrpc-1.1/docs/images/feather.gif xmlrpc-1.1/docs/images/xmlrpc-logo.gif xmlrpc-1.1/docs/images/xml-logo.gif xmlrpc-1.1/docs/server.html xmlrpc-1.1/docs/cvs.html xmlrpc-1.1/docs/parser.html xmlrpc-1.1/docs/download.html xmlrpc-1.1/docs/lists.html xmlrpc-1.1/docs/types.html xmlrpc-1.1/docs/changes.html xmlrpc-1.1/docs/index.html frilled.cs.indiana.edu%
Perhaps we only need a couple of files of all these.
We now need two files:frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc frilled.cs.indiana.edu%ls -l total 1346 drwx------ 3 dgerman faculty 512 Mar 6 2002 xmlrpc-1.1 -rw------- 1 dgerman faculty 1361920 Nov 28 22:17 xmlrpc-1.1.tar -rw------- 1 dgerman faculty 52 Nov 28 22:17 xmlrpc-1.1.tar.gz.md5 frilled.cs.indiana.edu%mkdir frontier frilled.cs.indiana.edu%cd frontier frilled.cs.indiana.edu%ls frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc/frontier frilled.cs.indiana.edu%
A client can be found at this location:
A client can be found at this location:http://xmlrpc-c.sourceforge.net/xmlrpc-howto/xmlrpc-howto-java-server.html
Here are my steps:http://xmlrpc-c.sourceforge.net/xmlrpc-howto/xmlrpc-howto-java-client.html
frilled.cs.indiana.edu%pwd
/nfs/moose/home/user3/dgerman/xmlrpc/frontier
frilled.cs.indiana.edu%emacs JavaClient.java
frilled.cs.indiana.edu%cat JavaClient.java
import java.util.Vector;
import java.util.Hashtable;
import helma.xmlrpc.*;
public class JavaClient {
// The location of our server.
private final static String server_url =
"http://xmlrpc-c.sourceforge.net/api/sample.php";
public static void main (String [] args) {
try {
// Create an object to represent our server.
XmlRpcClient server = new XmlRpcClient(server_url);
// Build our parameter list.
Vector params = new Vector();
params.addElement(new Integer(5));
params.addElement(new Integer(3));
// Call the server, and get our result.
Hashtable result =
(Hashtable) server.execute("sample.sumAndDifference", params);
int sum = ((Integer) result.get("sum")).intValue();
int difference = ((Integer) result.get("difference")).intValue();
// Print out our result.
System.out.println("Sum: " + Integer.toString(sum) +
", Difference: " +
Integer.toString(difference));
} catch (XmlRpcException exception) {
System.err.println("JavaClient: XML-RPC Fault #" +
Integer.toString(exception.code) + ": " +
exception.toString());
} catch (Exception exception) {
System.err.println("JavaClient: " + exception.toString());
}
}
}frilled.cs.indiana.edu%pwd
/nfs/moose/home/user3/dgerman/xmlrpc/frontier
frilled.cs.indiana.edu%ls -ld ../xml*/*.jar
-rw------- 1 dgerman faculty 24912 Mar 6 2002 ../xmlrpc-1.1/xmlrpc-1.1-applet.jar
-rw------- 1 dgerman faculty 57460 Mar 6 2002 ../xmlrpc-1.1/xmlrpc-1.1.jar
frilled.cs.indiana.edu%setenv CLASSPATH ~/xmlrpc/xmlrpc-1.1/xmlrpc-1.1.jar:.
frilled.cs.indiana.edu%echo $CLASSPATH
/u/dgerman/xmlrpc/xmlrpc-1.1/xmlrpc-1.1.jar:.
frilled.cs.indiana.edu%ls -l
total 4
-rw------- 1 dgerman faculty 1293 Nov 28 22:27 JavaClient.java
frilled.cs.indiana.edu%javac JavaClient.java
JavaClient.java:3: package helma.xmlrpc does not exist
import helma.xmlrpc.*;
^
JavaClient.java:15: cannot resolve symbol
symbol : class XmlRpcClient
location: class JavaClient
XmlRpcClient server = new XmlRpcClient(server_url);
^
JavaClient.java:15: cannot resolve symbol
symbol : class XmlRpcClient
location: class JavaClient
XmlRpcClient server = new XmlRpcClient(server_url);
^
JavaClient.java:33: cannot resolve symbol
symbol : class XmlRpcException
location: class JavaClient
} catch (XmlRpcException exception) {
^
4 errors
frilled.cs.indiana.edu%emacs JavaClient.javaAnd the client is now ready to work:frilled.cs.indiana.edu%diff JavaClient.java JavaClient.java~ 3c3 < import org.apache.xmlrpc.*; --- > import helma.xmlrpc.*; frilled.cs.indiana.edu%
Why should we be happy?frilled.cs.indiana.edu%pwd /nfs/moose/home/user3/dgerman/xmlrpc/frontier frilled.cs.indiana.edu%ls -l total 4 -rw------- 1 dgerman faculty 1298 Nov 28 22:34 JavaClient.java -rw------- 1 dgerman faculty 1293 Nov 28 22:33 JavaClient.java~ frilled.cs.indiana.edu%diff JavaClient.java JavaClient.java~ 3c3 < import org.apache.xmlrpc.*; --- > import helma.xmlrpc.*; frilled.cs.indiana.edu%echo $CLASSPATH /u/dgerman/xmlrpc/xmlrpc-1.1/xmlrpc-1.1.jar:. frilled.cs.indiana.edu%javac JavaClient.java frilled.cs.indiana.edu%java JavaClient Sum: 8, Difference: 2 frilled.cs.indiana.edu%
(As a matter of fact, why shouldn't we?)
The truth is, though, that this is very exciting.
Can we use a Perl client, too?
frilled.cs.indiana.edu%pwd
/nfs/moose/home/user3/dgerman/xmlrpc/frontier
frilled.cs.indiana.edu%vi perlClient
frilled.cs.indiana.edu%ls -l
total 7
-rw------- 1 dgerman faculty 1567 Nov 28 22:40 JavaClient.class
-rw------- 1 dgerman faculty 1298 Nov 28 22:34 JavaClient.java
-rw------- 1 dgerman faculty 1293 Nov 28 22:33 JavaClient.java~
-rw-r--r-- 1 dgerman faculty 432 Nov 28 22:45 perlClient
frilled.cs.indiana.edu%cat perlClient
#!/usr/bin/perl
use Frontier::Client;
# Make an object to represent the XML-RPC server.
$server_url = 'http://xmlrpc-c.sourceforge.net/api/sample.php';
$server = Frontier::Client->new(url => $server_url);
# Call the remote server and get our result.
$result = $server->call('sample.sumAndDifference', 5, 3);
$sum = $result->{'sum'};
$difference = $result->{'difference'};
print "Sum: $sum, Difference: $difference\n";
frilled.cs.indiana.edu%chmod 755 perlClient
frilled.cs.indiana.edu%./perlClient
Sum: 8, Difference: 2
frilled.cs.indiana.edu%The answer is yes, and we will show how in a second.
Another thing worth mentioning is that
Let us now focus on the issue of creating a server.
I have grouped a minimal number of files on the class web site (see below).
Go there and copy the files in a folder in your account:
Modulo a minor CLASSPATH setting we're ready to compile:burrowww.cs.indiana.edu% pwd /nfs/paca/home/user1/dgerman/xmlrpc burrowww.cs.indiana.edu% cp /l/www/classes/a348/fall2002/xmlrpc/* . burrowww.cs.indiana.edu% ls -l total 61 -rw-r--r-- 1 dgerman faculty 1287 Nov 28 23:11 JavaClient.java -rw-r--r-- 1 dgerman faculty 858 Nov 28 23:11 JavaServer.java -rw-r--r-- 1 dgerman faculty 432 Nov 28 23:11 perlClient -rw-r--r-- 1 dgerman faculty 57460 Nov 28 23:11 xmlrpc-1.1.jar burrowww.cs.indiana.edu%
burrowww.cs.indiana.edu% pwd
/nfs/paca/home/user1/dgerman/xmlrpc
burrowww.cs.indiana.edu% ls -l
total 61
-rw-r--r-- 1 dgerman faculty 1287 Nov 28 23:11 JavaClient.java
-rw-r--r-- 1 dgerman faculty 858 Nov 28 23:11 JavaServer.java
-rw-r--r-- 1 dgerman faculty 432 Nov 28 23:11 perlClient
-rw-r--r-- 1 dgerman faculty 57460 Nov 28 23:11 xmlrpc-1.1.jar
burrowww.cs.indiana.edu% setenv CLASSPATH ./xmlrpc-1.1.jar:$CLASSPATH
burrowww.cs.indiana.edu% javac JavaClient.java
burrowww.cs.indiana.edu% javac JavaServer.java
burrowww.cs.indiana.edu% cat JavaServer.java
import java.util.Hashtable;
import org.apache.xmlrpc.*;
public class JavaServer {
public JavaServer () {
// Our handler is a regular Java object. It can have a
// constructor and member variables in the ordinary fashion.
// Public methods will be exposed to XML-RPC clients.
}
public Hashtable sumAndDifference (int x, int y) {
Hashtable result = new Hashtable();
result.put("one: ", new Integer(x * y)); // notice the changes for both
result.put("two: ", new Integer(x * x - y * y)); // the names and values
return result; // although what comes back is still a Hashtable
} // the matching of the keys, however is fundamental
public static void main (String [] args) {
try {
// Invoke me as .
WebServer server = new WebServer(Integer.parseInt(args[0]));
server.addHandler("sample", new JavaServer());
} catch (Exception exception) {
System.err.println("JavaServer: " + exception.toString());
}
}
}
burrowww.cs.indiana.edu% I start my server on 10603 (which is listed as my 5th port on the students and ports page).
And the server stays there...burrowww.cs.indiana.edu% java JavaServer 10603
Meanwhile from where the client was (after a few minor changes):
frilled.cs.indiana.edu%pwd
/nfs/grouchy/home/user2/www/classes/a348-dger/fall2002/xmlrpc
frilled.cs.indiana.edu%ls -l
total 61
-rw-r--r-- 1 dgerman faculty 1420 Nov 29 00:17 JavaClient.java
-rw-r--r-- 1 dgerman faculty 853 Nov 29 00:02 JavaServer.java
-rwx------ 1 dgerman faculty 426 Nov 29 00:02 perlClient
-rw-r--r-- 1 dgerman faculty 57460 Nov 28 23:10 xmlrpc-1.1.jar
frilled.cs.indiana.edu%cat JavaClient.java
import java.util.Vector;
import java.util.Hashtable;
import org.apache.xmlrpc.*;
public class JavaClient {
// The location of our server.
private final static String server_url =
"http://burrowww.cs.indiana.edu:10603/RPC2";
public static void main (String [] args) {
try {
// Create an object to represent our server.
XmlRpcClient server = new XmlRpcClient(args[0]);
// Build our parameter list.
Vector params = new Vector();
params.addElement(new Integer(args[1]));
params.addElement(new Integer(args[2]));
// Call the server, and get our result.
Hashtable result =
(Hashtable) server.execute("sample.sumAndDifference", params);
System.out.println("Receiving: " + result);
int one = 0, two = 0;
try {
one = ((Integer) result.get("one: ")).intValue();
two = ((Integer) result.get("two: ")).intValue();
} catch (Exception e) { System.out.println("Something went wrong."); }
// Print out our result.
System.out.println("One: " + Integer.toString(one) +
", Two: " + Integer.toString(two));
} catch (XmlRpcException exception) {
System.err.println("JavaClient: XML-RPC Fault #" +
Integer.toString(exception.code) + ": " +
exception.toString());
} catch (Exception exception) {
System.err.println("JavaClient: " + exception.toString());
}
}
}
frilled.cs.indiana.edu%javac JavaClient.java
frilled.cs.indiana.edu%java JavaClient http://burrowww.cs.indiana.edu:10603/RPC2 5 4
Receiving: {two: =9, one: =20}
One: 20, Two: 9
frilled.cs.indiana.edu%And since browsers and servers need not be written in the same language
frilled.cs.indiana.edu%pwd
/nfs/grouchy/home/user2/www/classes/a348-dger/fall2002/xmlrpc
frilled.cs.indiana.edu%ls -ld perl*
-rwx------ 1 dgerman faculty 432 Nov 29 00:39 perlClient
frilled.cs.indiana.edu%cat perlClient
#!/usr/bin/perl
use Frontier::Client;
# Make an object to represent the XML-RPC server.
$server_url = $ARGV[0]; # 'http://xmlrpc-c.sourceforge.net/api/sample.php';
$server = Frontier::Client->new(url => $server_url);
# Call the remote server and get our result.
$result = $server->call('sample.sumAndDifference', $ARGV[1], $ARGV[2]);
$one = $result->{'one: '};
$two = $result->{'two: '};
print "One: $one, Two: $two\n";
frilled.cs.indiana.edu%./perlClient http://burrowww.cs.indiana.edu:10603/RPC2 5 4
One: 20, Two: 9
frilled.cs.indiana.edu%http) paradigm in distributed
computing is a big plus.