The HelloService implementation is just a Java class that implements
the HelloService API. This service responds by placing the results of
the request on a JMS queue.
package example;
public interface LogService {
public void log(String message);
public String getLog();
}
package example;
public class LogServiceImpl implements LogService {
private int _sequenceNumber = 1;
private StringBuilder _log = new StringBuilder();
public void log(String message)
{
_log.append(_sequenceNumber + ": " + message + "\n");
_sequenceNumber++;
}
public String getLog()
{
return _log.toString();
}
}
The configuration for this example is the following:
<web-app xmlns="http://caucho.com/ns/resin">
<resource var="logService"
jndi-name="example/LogService"
type="example.LogServiceImpl" />
<resource var="serviceQueue"
jndi-name="jms/ServiceQueue"
type="com.caucho.jms.memory.MemoryQueue" />
<resource var="jmsFactory"
jndi-name="jms/ConnectionFactory"
type="com.caucho.jms.ConnectionFactoryImpl" />
<resource type="com.caucho.hessian.server.HessianListener">
<init>
<connection-factory>${jmsFactory}</connection-factory>
<destination>${serviceQueue}</destination>
<service>${logService}</service>
</init>
</resource>
</web-app>
Finally, the service is called from a JSP page:
<%@ page import="javax.naming.Context" %>
<%@ page import="javax.naming.InitialContext" %>
<%@ page import="com.caucho.hessian.client.HessianProxyFactory" %>
<%@ page import="example.LogService" %>
<%
// Check the log
Context context = (Context) new InitialContext().lookup("java:comp/env");
LogService logService = (LogService) context.lookup("example/LogService");
out.println("Refresh
");
out.println("Logged messages:<br/>");
out.println("<pre>");
out.println(logService.getLog());
out.println("</pre>");
// Make a request
HessianProxyFactory factory = new HessianProxyFactory();
String url = "jms:jms/ServiceQueue";
LogService log = (LogService) factory.create(LogService.class, url);
log.log("Hello, World");
%>
Try the example