Ok, I have a web service class that i want to use to access loads on
certain machines. It takes one parameter, the machine name. The Java
source looks like this:
(begin source here)
package samples.userguide.load;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.encoding.XMLType;
import org.apache.axis.utils.Options;
import javax.xml.rpc.ParameterMode;
public class LoadClient
{
public static void main(String [] args) throws Exception {
Options options = new Options(args);
String endpoint = "http://localhost:"; + options.getPort()
+"/axis/Load.jws";
args = options.getRemainingArgs();
if (args == null || args.length != 1) {
System.err.println("Usage: LoadClient arg1");
return;
}
String s1 = new String(args[0]);
Service service = new Service();
Call call = (Call) service.createCall();
call.setTargetEndpointAddress(new java.net.URL(endpoint) );
call.setOperationName("getBatchQueueLoad");
call.addParameter( "machine", XMLType.XSD_STRING, ParameterMode.IN);
call.setReturnType(XMLType.XSD_STRING);
String ret = "";
try {
ret = (String) call.invoke(new Object[] {s1});
}
catch(Exception e) {
System.out.println("s1 = "+s1+" ret = '"+ret+"'");
System.out.println("ret BAAAAADDDD!!\n" + e);
e.printStackTrace();
}
System.out.println(ret);
}
}
The location of this file is
/usr/local/apps/xml-axis-beta2/samples/userguide/load
The Load.jws file looks like this
(begin code here)
import java.net.URL;
import java.net.MalformedURLException;
import java.io.*;
public class Load {
public static String getBatchQueueLoad (String machine)
{
String line ="";
try {
URL u = new URL ("http://www.tacc.utexas.edu/~rich/hipcat_data/"; +
machine + "_load.txt");
BufferedReader data = new BufferedReader
( new InputStreamReader( u.openStream() ));
line = data.readLine();
data.close();
}
catch (IOException e) {
System.err.println("Error: " + e);
}
return line;
}
}
The location of the Load.jws file is her
/usr/local/apps/jakarta-tomcat-4.0.4-b1/webapps/axis
Everything works great when I run the command
java samples.userguide.load.LoadClient machine_name
I get back the load on the machine.
I want to have a web interface with forms fields where I can put in the
machine name and click submit and have the load returned and displayed in
and HTML page.
Does this call for servlets/jsp? I keep reading about WSDL everywhere but
noone seems to explain how to utilize it. Every tutorial seems to stop
short of telling how to access a web service from the WEB. What am I
missing? Am I going in the right direction?
Many thanks in advance
--
_____________________________________________________________________
Eric Roberts [EMAIL PROTECTED]
Grid Computing Group
Texas Advanced Computing Center
University of Texas at Austin http://www.tacc.utexas.edu/~ericrobe
_____________________________________________________________________
