You can try Singleton design for ServiceWrapper class,
here is very generic example, and no where near complete solution.
public class ServiceWrapper
{
private Service service;
private static ServiceWrapper instance;//holding its own STATIC instance
//you might need to add synchronized,
public static ServiceWrapper getInstance() throws Exception
{
if (instance == null) {
instance = new ServiceWrapper ();
return instance;
} else
return instance;
}
private ServiceWrapper()
{
Service service = new Service();
//do service set up, adding gateways etc.. or something here
service.startService();
}
public Service getService()
{
return this.service;
}
}
//how to use
ServiceWrapper sw = ServiceWrapper.getInstance(); //first time create and
start the service
Service service = sw.getService();//get the service which is already started
//another time
ServiceWrapper sw2 = ServiceWrapper.getInstance(); // second time, it wont
create a new Service again
Service service2 = sw2.getService()// get the same old service that is
created previously.
So, that way the service is only created once for the first time, after that
the ServiceWrapper will return its old instance everytime you call the
getInstance() method.
Oh yah,, dont forget to ask our master google :P. try searching for java
Singleton, Thread safe etc..
good luck
On Wed, Dec 16, 2009 at 1:57 AM, Vikas Patidar <
[email protected]> wrote:
> Hi, Dark Cloud
>
> first of all thank you very much.
>
> Second,
> Now i have changed my mobile from "Nokia 3220" to "Samsung Guru
> GT-E1410" and I have tested it on both of my "Windows 7" and "Linux
> Mint 8 Helena" with the both "Java Comm 3" and "RxTx" Libraries using
> Bluetooth Interface "/dev/rfcomm0" port in linux and "COM17" on
> windows
> and now everything working fine.
> I have tested both the ReadMessages.java and SendMessage.java files in
> my java project and everything works fine.
>
> Also i have added all the jar's in my "WebContent/web-inf/lib" directory
> But i don't understand how to create the Service instance using
> wrapper class and calling it in jsp using factory style (getInstance()
> ) method.
>
> Please explain me more detail, and If you have some code snippets then
> please post me..
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Thanks and Regards:
>
> Vikas Patidar
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Known is Drop & Unknown is Ocean.
>
> On 12/14/09, dark cloud <[email protected]> wrote:
> > Did you check the compatibility with the phone you are using?
> >
> > You might need to put the comm libraries jars in your app server
> classpath
> > (???) such as wen-inf/lib ??? not sure about that
> >
> > jsp and servlets are basically the same they are loaded and run everytime
> > the user request.
> >
> > In my case, I have separate application running in the background with
> > embedded custom j2ee web server, very similar to SMSServer example (but
> not
> > quite).
> >
> >
> > but here is the easy way,
> >
> > you may need to wrapper class to wrap the Service.
> > let the wrapper run at server start up. (you can use singleton or
> whatever
> > to make sure you dont recreate the service instance again and again)
> > call factory style (getInstance() ) methods from your servlets or jsp.
> but
> > do not create the service instance on your jsp or servlet. (i.e no new
> > Service() ) on the jsp.
> >
> > goodluck
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > I have tested COM Port and it is working fine at the "COM27" with my
> >> "Nokia 3220" handset.
> >> But the problem is still same.
> >> It may be occoure because of running service instance again and again.
> >>
> >> However I appreciate with you that putting "Service" instance on jsp
> >> in not good, but should I use it with java bean or servlet ?.
> >>
> >> And anyway you have run it once thought application, so let me know in
> >> detail how can i start
> >> the Service only once in my application, as I am is newbie to j2ee.
> >> Plz reply soon........
> >>
> >> Thanks and Regards
> >>
> >> Vikas Patidar
> >>
> >>
> >> On 12/12/09, dark cloud <[email protected]> wrote:
> >> > First of all, I am no where near smslib expert, but it looks like you
> >> have
> >> > the comport problem or comm driver that I had before (misplacing jar
> >> files)
> >> > , check the hardware and see what com port it is attached to. If it
> does
> >> not
> >> > work, you will need to reconfigure the comm library for the system.
> >> >
> >> > Second, I am also using smslib in my j2ee project. I believe putting
> >> Service
> >> > instance on the jsp is not the best option to use smslib, because it
> >> > will
> >> > invoke Service,( which takes several seconds to start ) everytime you
> >> load
> >> > the servlet/jsp (???) . I think it should run only once throughout the
> >> > application by design. In my case, it starts only once, when I start
> the
> >> > application. If you have any tips using j2ee and smslib share me
> >> > please.
> >> >
> >> >
> >> > check http://smslib.org/doc/installation/ for installing comm drivers
> >> for
> >> > java including windows and linux.
> >> >
> >> > Merry X mass and Good luck.
> >> >
> >> >
> >> > Cheers
> >> > Nick
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > On Fri, Dec 11, 2009 at 10:48 PM, Vikas Patidar <
> >> > [email protected]> wrote:
> >> >
> >> >> Hi,
> >> >> I am using smslib in my project and I have properly configured the
> >> >> whole
> >> >> project in IBM Rational Application Developer 7.5. Also I am
> >> >> successfully
> >> >> able to run ReadMessages.java and SendMessage.java in my JAVA
> project,
> >> >> but
> >> >> I want to Send and Read SMS in a Dynamic Web Project using JSP or
> >> >> Servlets. For
> >> >> this i have written a simple ReadMessage.jsp file like:
> >> >>
> >> >> =====================================================================
> >> >> <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
> >> >> pageEncoding="ISO-8859-1"
> >> >> import = "java.util.*,
> >> >> org.smslib.*,
> >> >> org.smslib.AGateway.Protocols,
> >> >>
> >> org.smslib.InboundMessage.MessageClasses,
> >> >> org.smslib.modem.SerialModemGateway"
> %>
> >> >> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
> >> >> "http://www.w3.org/TR/html4/loose.dtd";>
> >> >> <html>
> >> >> <head>
> >> >> <meta http-equiv="Content-Type" content="text/html;
> >> >> charset=ISO-8859-1">
> >> >> <title>Read Messages from phone Using SMSLib !</title>
> >> >> </head>
> >> >> <body>
> >> >> <%
> >> >> Service srv = new Service();
> >> >> InboundMessage message;
> >> >> List<InboundMessage> msgList;
> >> >> try
> >> >> {
> >> >> SerialModemGateway gateway = new
> >> >> SerialModemGateway("modem.com27",
> >> >> "COM27", 57600, "Nokia", "3220");
> >> >> gateway.setProtocol(Protocols.PDU);
> >> >> gateway.setSimPin("0000");
> >> >> srv.addGateway(gateway);
> >> >> srv.startService();
> >> >> msgList = new ArrayList<InboundMessage>();
> >> >> srv.readMessages(msgList, MessageClasses.ALL);
> >> >> for (int i = 0; i < 1; i++)
> >> >> {
> >> >> message = msgList.get(i);
> >> >> String msgTxt =
> >> message.getText();
> >> >> out.print(msgTxt);
> >> >> }
> >> >> }
> >> >> catch (Exception e)
> >> >> {
> >> >> e.printStackTrace();
> >> >> }
> >> >> finally
> >> >> {
> >> >> srv.stopService();
> >> >> }
> >> >> %>
> >> >> </body>
> >> >> </html>
> >> >> =====================================================================
> >> >> When i have publish the file ReadMessage.jsp to the server first
> time
> >> >> it works fine and reads first message but when i have publish this
> >> >> file again to the server it is displaying the following error:
> >> >> =====================================================================
> >> >>
> >> >> [12/11/09 23:55:39:732 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo SMSLib: A Java API library for
> >> >> sending and
> >> >> receiving SMS via a GSM modem or other supported gateways.
> >> >> This software is distributed under the terms of the Apache v2.0
> >> >> License.
> >> >> Web Site: http://smslib.org
> >> >> [12/11/09 23:55:39:732 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo Version: 3.4.3
> >> >> [12/11/09 23:55:39:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo JRE Version: 1.6.0
> >> >> [12/11/09 23:55:39:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo JRE Impl Version: 2.4
> >> >> [12/11/09 23:55:39:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo O/S: Windows Vista / x86 / 6.1 build
> >> >> 7600
> >> >> [12/11/09 23:55:39:748 IST] 00000107 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Starting gateway,
> >> >> using
> >> >> Generic AT Handler.
> >> >> [12/11/09 23:55:39:748 IST] 00000107 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Opening: COM27
> >> >> @57600
> >> >> [12/11/09 23:55:40:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Stopping
> gateway...
> >> >> [12/11/09 23:55:40:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Closing: COM27
> >> >> @57600
> >> >> [12/11/09 23:55:40:748 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Gateway stopped.
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Stopping
> gateway...
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Closing: COM27
> >> >> @57600
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 smslib I
> >> >> org.smslib.helper.Logger logInfo GTW: modem.com27: Gateway stopped.
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 SystemErr R
> >> >> org.smslib.GatewayException: Comm library exception:
> >> >> java.lang.RuntimeException: javax.comm.NoSuchPortException
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 SystemErr R at
> >> >>
> org.smslib.modem.SerialModemDriver.connectPort(SerialModemDriver.java:
> >> >> 96)
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 SystemErr R at
> >> >> org.smslib.modem.AModemDriver.connect(AModemDriver.java:111)
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 SystemErr R at
> >> >> org.smslib.modem.ModemGateway.startGateway(ModemGateway.java:185)
> >> >> [12/11/09 23:55:41:154 IST] 000000f4 SystemErr R at
> >> >> org.smslib.Service$1Starter.run(Service.java:257)
> >> >>
> >> >> ====================================================================
> >> >> If anyone is working with J2EE then please reply me.
> >> >> Thanks and regards,
> >> >> Vikas Patidar
> >> >>
> >> >> --
> >> >>
> >> >> You received this message because you are subscribed to the Google
> >> Groups
> >> >> "SMSLib for Java User Group" group.
> >> >> To post to this group, send email to [email protected].
> >> >> To unsubscribe from this group, send email to
> >> >> [email protected]<smslib%[email protected]>
> <smslib%[email protected]<smslib%[email protected]>
> >
> >> <smslib%[email protected]<smslib%[email protected]>
> <smslib%[email protected]<smslib%[email protected]>
> >
> >> >
> >> >> .
> >> >> For more options, visit this group at
> >> >> http://groups.google.com/group/smslib?hl=en.
> >> >>
> >> >>
> >> >>
> >> >
> >> > --
> >> >
> >> > You received this message because you are subscribed to the Google
> >> > Groups
> >> > "SMSLib for Java User Group" group.
> >> > To post to this group, send email to [email protected].
> >> > To unsubscribe from this group, send email to
> >> > [email protected]<smslib%[email protected]>
> <smslib%[email protected]<smslib%[email protected]>
> >
> >> .
> >> > For more options, visit this group at
> >> > http://groups.google.com/group/smslib?hl=en.
> >> >
> >> >
> >> >
> >>
> >> --
> >>
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> Groups
> >> "SMSLib for Java User Group" group.
> >> To post to this group, send email to [email protected].
> >> To unsubscribe from this group, send email to
> >> [email protected]<smslib%[email protected]>
> <smslib%[email protected]<smslib%[email protected]>
> >
> >> .
> >> For more options, visit this group at
> >> http://groups.google.com/group/smslib?hl=en.
> >>
> >>
> >>
> >
> > --
> >
> > You received this message because you are subscribed to the Google Groups
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> > To post to this group, send email to [email protected].
> > To unsubscribe from this group, send email to
> > [email protected]<smslib%[email protected]>
> .
> > For more options, visit this group at
> > http://groups.google.com/group/smslib?hl=en.
> >
> >
> >
>
> --
>
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> To unsubscribe from this group, send email to
> [email protected]<smslib%[email protected]>
> .
> For more options, visit this group at
> http://groups.google.com/group/smslib?hl=en.
>
>
>
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