Servlet's onMessage method in SOAP

Hi,
When I call a servlet which has an onMessage(SOAPMessage m) method from a client program, I get the 405 Error. The call returns to the client with an Exception saying that the post method is not implemented by the servlet.
What should be done ? Is there a special way to invoke the "call" method from the client ?
The declaration of my class is
public class MyServlet implements ReqRespListener
Thanks
Sanjeev

shouldn't this be:public class MyServlet extends JAXMServlet implements ReqRespListener, nope?

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Server path in onMessage method

Hi,
getServletContext().getRealPath("./") in Servlet will give the server path of the current web application.
Similarly how to get the server path in onMessage method of Message Driven Bean ?
I have a xml from database. Need to access a xsl in WL server and create a html and then write this html to a flat file. I need to do all this in onMessage method. So, now to access the xsl file i need the server path.
Your help is greatly appreciated.
Thanks in Advance,
Anitha

Hey Anitha,
Here is a sample that maybe useful.
URL url = (new TestClass()).getClass().getResource(name);
String absPath = url.getFile()Where new TestClass() is the classname where this code goes and fits. The name is a relative path to retrive the xsl file or any other stuff u like.

Urgent....How can i redirect to my jsp page from servlet in init() method..

How can i redirect to my jsp page from servlet in init() method..Becoz that servlet is calling while server startsup..so im writing some piece of code in init() method..after that i want to redirect to some jsp page ...is it possible?
using RequestDispatcher..its not possible..becoz
RequestDispatcher rd = sc.getRequestDispatcher("goto.jsp");
rd.foward(req,res);
Here the request and response are null objects..
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Hi guys
did any one get a solution for this issue. calling a jsp in the startup of the servlet, i mean in the startup servlet. I do have a same req like i need to call a JSP which does some data reterival and calculations and i am putting the results in the cache. so in the jsp there in no output of HTML. when i use the URLConnection i am getting a error as below.
java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:707)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:612)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:705)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:612)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
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at com.toysrus.fns.alphablox.Startup.callJSP(Unknown Source)
at com.toysrus.fns.alphablox.Startup.init(Unknown Source)
at org.apache.tomcat.core.ServletWrapper.doInit(ServletWrapper.java:317)
so plz do let me know how to call a jsp in the start up of a servlet.
Thanks
Vidya

Redelivery of message ,If there is an exception in onMessage() method

          Hi ,
          Is it possible to send acknowledge from the onMessage() method of any MDB to the
          JMS server (Queue). And how to make JMS server redeliver the message ? What properties
          are to be set for this in Weblogic server ,JMS server . And do we need to do modify
          onMessage() method . If anybody has the code snippet and properties setting ,pleas
          let me know .
          TIA
          Prabir
          [redelivery.txt]


If MDB is transactional, you can call setRollbackOnly() on it (not sure of exact syntax),
          this is
          standard J2EE.
          If it is not transactional you can throw a RuntimeException (such as
          ArrayIndexOutOfBounds, etc)
          this will force a redelivery. (J2EE provides no standard here, but BEA does the sane
          thing here.)
          Note that 6.1 and above provides optional redelivery delays and redelivery limits.
          Tom
          Prabir wrote:
          > Hi ,
          > Is it possible to send acknowledge from the onMessage() method of any MDB to the
          > JMS server (Queue). And how to make JMS server redeliver the message ? What properties
          > are to be set for this in Weblogic server ,JMS server . And do we need to do modify
          > onMessage() method . If anybody has the code snippet and properties setting ,pleas
          > let me know .
          > TIA
          > Prabir
          >
          > ------------------------------------------------------------------------
          > Name: redelivery.txt
          > redelivery.txt Type: Plain Text (text/plain)
          > Encoding: base64

LDAP Context Initialization Problem in a Servlet's Init method

Hi
I have a servlet where I am using the InitialDirContext to Initialize context to a LDAP Server. I have created the context as a static variable. I am initializing the context in the init method and am using the same reference in the service method of the servlet. But if the context fails (due to naming exception and time out) in the init method all my requests in the service method will fail. Is there any way to validate the reference before using the same in the service method.
Also what is the best approach to initialize the context in a servlet. Whether to initialize in the service method or the init method.
I would appreciate if anyone can answer the above 2 queries.
Thanks in advace,
Ashish

If you want to use threadsafe objects in doPost/doGet there are two common ways to do this.
First, create the object in doPost/doGet. This may get expensive depending on the object, but it is 'easy' code and works.
The second option is to create a pool of objects in the servlet's init() method and to just have doPost/doGet get an object from the pool, use it and return it when done. This take a little more work to code, but the overhead of creating objects is almost eliminated. Look at jakarta/apache commons pool for a quick way to do this.
If you create on object in init() and use it in doPost/doGet, any time you get two request for the same servlet at the same time you will have synchronization issues that will usually cause problems. There is one instance of each Servlet, so all request for that servlet go through the single instance. Anything in doPost/doGet must be threadsafe.

Problem calling servlet from doget method of another servlet

hi,
Iam trying to post an html form written in the doGet() method
of a servlet to pass this information to another servlet's doPost() method. Iam giving the following URL:
"<FORM ACTION=http://localhost:8080/examples/servlet/UpdateProcessServlet" +
"METHOD=POST>"
But its not happening,the error says that "the page cannot be found" The servlet is not getting called at all. would someboy please help me in this regard.
Thanks

#1 Iam calling servlet 2 from here
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
session=request.getSession(false);
out.println
(ServletUtilities.DOCTYPE +
"<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN>"+
"<HTML>" +
"<BODY>" +
"<P CLASS=LARGER>" +
"<FORM ACTION=http://localhost:8080/examples/servlet/UpdateProcessServlet METHOD=POST>"
"<INPUT TYPE=SUBMIT NAME=submitButton Value=submit>" +
"</BODY> " +
"</HTML>" );
#2 This should get called and print me "Iam in doPost method
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
url = "jdbc:odbc:Resume";
System.out.println("Iam in doPost method");
response.setContentType("text/html");
out = response.getWriter();
out.println("This is the last servlet for this project:");
bool=false;
check=false;
Thank...:)

Why do we divide a servlet into many methods?

Hello;
sometimes i see that we divide a servlet into many methods...these methods are related with other methods in same servlet and sending parameters to each other...at last all the methods used at least once..and returning variable number is only one...
so why do we seperate these methods?we can do the same job in one method...
i wanted to learn the reason?is it a programming tecnique or the way of creating a library?or related with performance...?
but my question is different...i am asking when all the methods are used in a class why do we seperate them as methods?
thank you

can you post one such example ?

The servlet weblogic.servlet.AsyncInitServlet init method failed

I installed WLS 9.2.2 recently with my app being on 8.1.5 for a long time.
I chose to create a new domain instead of upgrading my existing one.
I use the eclipse 3.2.2 with the WL plugin.
When I start the server and login to the console not using eclipse it works fine.
Trying to start the server and login to the console gives a internal server error.
Any idea what could be wrong? I bolded the parts where I have looked into.
Here is the console output:
<Nov 19, 2008 3:13:02 PM CST> <Notice> <WebLogicServer> <BEA-000395> <Following extensions directory contents added to the end of the classpath:
C:\bea92\weblogic92\platform\lib\p13n\p13n-schemas.jar;C:\bea92\weblogic92\platform\lib\p13n\p13n_common.jar;*C:\bea92\weblogic92\platform\lib\p13n\p13n_system.jar*;C:\bea92\weblogic92\platform\lib\wlp\netuix_common.jar;C:\bea92\weblogic92\platform\lib\wlp\netuix_schemas.jar;C:\bea92\weblogic92\platform\lib\wlp\netuix_system.jar;C:\bea92\weblogic92\platform\lib\wlp\wsrp-common.jar>
<Nov 19, 2008 3:13:03 PM CST> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Java HotSpot(TM) Client VM Version 1.5.0_10-b03 from Sun Microsystems Inc.>
<Nov 19, 2008 3:13:05 PM CST> <Info> <Management> <BEA-141107> <Version: WebLogic Server 9.2 MP2 Mon Jun 25 01:32:01 EDT 2007 952826 >
<Nov 19, 2008 3:13:10 PM CST> <Info> <WebLogicServer> <BEA-000215> <Loaded License : C:\bea92\license.bea>
<Nov 19, 2008 3:13:10 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Nov 19, 2008 3:13:10 PM CST> <Info> <WorkManager> <BEA-002900> <Initializing self-tuning thread pool>
<Nov 19, 2008 3:13:11 PM CST> <Notice> <Log Management> <BEA-170019> <The server log file C:\bea92\user_projects\domains\domain\servers\AdminServer\logs\AdminServer.log is opened. All server side log events will be written to this file.>
<Nov 19, 2008 3:13:15 PM CST> <Notice> <Security> <BEA-090082> <Security initializing using security realm myrealm.>
<Nov 19, 2008 3:13:22 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STANDBY>
<Nov 19, 2008 3:13:22 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Nov 19, 2008 3:13:30 PM CST> <Error> <HTTP> <BEA-101359> <The servlet weblogic.servlet.AsyncInitServlet init method failed while it was run in the background. The exception was: java.lang.NoClassDefFoundError: com/bea/p13n/management/ApplicationFilePoller$Handler.
java.lang.NoClassDefFoundError: com/bea/p13n/management/ApplicationFilePoller$Handler
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
     Truncated. see log file for complete stacktrace
>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <Log Management> <BEA-170027> <The server initialized the domain log broadcaster successfully. Log messages will now be broadcasted to the domain log.>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to ADMIN>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RESUMING>
<Nov 19, 2008 3:13:39 PM CST> <Notice> <Server> <BEA-002613> <Channel "Default" is now listening on 127.0.0.1:7005 for protocols iiop, t3, ldap, http.>
<Nov 19, 2008 3:13:39 PM CST> <Notice> <WebLogicServer> <BEA-000331> <Started WebLogic Admin Server "AdminServer" for domain "domain" running in Development Mode>
<Nov 19, 2008 3:13:40 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RUNNING>
<Nov 19, 2008 3:13:40 PM CST> <Notice> <WebLogicServer> <BEA-000360> <Server started in RUNNING mode>
<Nov 19, 2008 3:22:04 PM CST> <Error> <HTTP> <BEA-101020> <[weblogic.servlet.internal.WebAppServletContext@d6c6a0 - appName: 'consoleapp', name: 'console', context-path: '/console'] Servlet failed with Exception
java.lang.NullPointerException
     at weblogic.servlet.AsyncInitServlet.service(AsyncInitServlet.java:124)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     Truncated. see log file for complete stacktrace
Edited by: user5384782 on Nov 19, 2008 1:42 PM
Edited by: user5384782 on Nov 19, 2008 3:59 PM

Thanks for your replies adrian and david.
The only thing I see different is that eclipse has different arguments when calling the jvm at the top.
startWebLogic.cmd:
C:\bea92\JDK150~1\bin\java -client -Xms256m -Xmx512m -XX:CompileThreshold=8000
-XX:PermSize=48m -XX:MaxPermSize=128m -Xverify:none -da -Dplatform.home=C:\b
ea92\WEBLOG~1 -Dwls.home=C:\bea92\WEBLOG~1\server -Dwli.home=C:\bea92\WEBLOG~1\i
ntegration -Dweblogic.management.discover=true -Dwlw.iterativeDev= -Dwlw.testC
onsole= -Dwlw.logErrorsToConsole= -Dweblogic.ext.dirs=C:\bea92\patch_weblogic922
\profiles\default\sysext_manifest_classpath -Dweblogic.Name=AdminServer -Djava.s
ecurity.policy=C:\bea92\WEBLOG~1\server\lib\weblogic.policy weblogic.Server
eclipse:
-hotspot -Xms32m -Xmx200m -Dweblogic.ProductionModeEnabled=
Eclipse may be calling the cmd I dont know.
I will try upgrading my eclipse like adrian said, but in the meantime I appreciate any further advice/tips.

How servlet's init method is overridden ?

Here is a sample code to override servlet's init method.
public class BookDBServlet ... {
        private BookstoreDB books;
        public void init(ServletConfig config) throws ServletException {
            // Store the ServletConfig object and log the initialization
            super.init(config);
            // Load the database to prepare for requests
            books = new BookstoreDB();
    }I dont get why super.init(config); is called.
Comment says +// Store the ServletConfig object and log the initialization+
what does "Store" mean here ? Where it is stored ?
how it is logged ( log4j / commons -logging ? ) and where (which file) it is logged ?
Can we remove this line without any damage ?

There are several calls you can make to the servlet object which are simply delegated to the ServletConfig object, most notably getServletContext(). The default action of the init(SerletConfig config) method is to store the config in a field which is defined in GenericServlet, so that these calls can work. If you don't do this then calling getServletContext() at some later time will give you a NullPointerException.
I think the reference to logging is that, if you use the built in servlet logging system, rather than log4j or java.util.loging then this depends on a valid servlet context, which in turn, depends on a valid servlet config reference.

Unable to call Forte method by SOAP

Hi,
I am trying to see about XML server forte example but I have a problem, After calling the forte method by SOAP, I have this message as result by iPlanet UDS:
Exception in thread "main" java.lang.Exception: CustomerSOProxy.getName received
SOAP Fault; code=SOAP-ENV:Client string=invalid request
at com.forte.xmlsvr.customerservice.CustomerSOProxy.getName(CustomerSOPr
oxy.java:43)
at CustClient.main(CustClient.java:6)
Customer is a Forte class used by CustomerSO service object in Forte. I have written getName method which returns my name. I did this for testing.
I verified:
- The application is running under environment console.
- The client side call has correct URL http://localhost:9090
I appreciate you help on this. Thank you very much in advance.

by starting a new thread i will lose all change that
i have done in the applet. new thread in the forums... what does that have to do either way with your applet? the forum is not tied to your code, neither would a Java thread, which you can always keep a copy of your original code. Or what are you talking about?
the problem is that i have
a applet in one window ...which can be modified (that
is rotate etc). now i need to open another new window
from this window . in this new window i want to
display the modified applet . so tell me who can i
capture the change in the appletI already answered your other thread that you did, finally, post.

Long running onMessage() method

I have an application in which the onMessage() method implemented within an MDB would never complete. The onMessage() method calls a bean which executes in a while(TRUE) loop.
If I were to use CMT to control my MDB, the message would not be dequeued from the JMS server till the onMessage() method completes. What is the impact of this never ending transaction on the JMS provider and container(Weblogic 7.0)? I realize this is something which should be avoided and would be better handled using a bean managed MDB. But I need the rollback facility provided by a container managed MDB to be able to automatically put the message back into the Q if for some reason the MDB or the server hosting it failed.
Thanks

You m,ust use a Startup class

Why Servlet has init method?

Hello,
i am new bie to servlet. Can you tell me why servlet has init method to initialize?
Why do not we use constructor instead of init method to initialize? Does servlet allow constructor?
Why init method has SevletConfig as argument?
Please help me to get knowledge regarding this. Any URL for this(sun or anything), please send.
Thanks,
balachandar

http://www.unix.org.ua/orelly/java-ent/servlet/ch03_03.htm

Binary data in a servlet's doGet method?

Hi,
How to write binary data in a servlet's doGet method? Anyone, please help.

Use POST instead of GET to transfer binary data. For GET, you can only append the data in the QUERY_STRING and its length is very limited. so better use POST.

OnMessage() method not triggered

I can able to send message to Queue but the onMessage() method not invoked.Please help me out resolve this problem.

yes ur correct but i didn't call start() method but i don' know where i need to call.here i have paste my code plz tell me where i need to call start method.
package mdb;
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
* This software is the proprietary information of Sun
* Microsystems, Inc. Use is subject to license terms.
import java.io.Serializable;
import java.rmi.RemoteException;
import javax.ejb.EJBException;
import javax.ejb.MessageDrivenBean;
import javax.ejb.MessageDrivenContext;
import javax.ejb.CreateException;
import javax.naming.*;
import javax.jms.*;
public class SimpleMessageBean implements MessageDrivenBean,MessageListener {
private transient MessageDrivenContext mdc = null;
private Context context;
public SimpleMessageBean() {
System.out.println("In SimpleMessageBean.SimpleMessageBean()");
public void setMessageDrivenContext(MessageDrivenContext mdc) {
System.out.println("In "
+ "SimpleMessageBean.setMessageDrivenContext()");
     this.mdc = mdc;
public void ejbCreate() {
     System.out.println("In SimpleMessageBean.ejbCreate()");
public void onMessage(Message inMessage) {
TextMessage msg = null;
try {
if (inMessage instanceof TextMessage) {
msg = (TextMessage) inMessage;
System.out.println("MESSAGE BEAN: Message received: "
+ msg.getText());
} else {
System.out.println("Message of wrong type: "
+ inMessage.getClass().getName());
} catch (JMSException e) {
e.printStackTrace();
mdc.setRollbackOnly();
} catch (Throwable te) {
te.printStackTrace();
} // onMessage
public void ejbRemove() {
System.out.println("In SimpleMessageBean.remove()");
} // class
here is weblogic-ejb.xml

<weblogic-ejb-jar>
     <weblogic-enterprise-bean>
          <ejb-name>SimpleMessageBean</ejb-name>
          <message-driven-descriptor>
               <pool>
                    <max-beans-in-free-pool>2</max-beans-in-free-pool>
                    <initial-beans-in-free-pool>1</initial-beans-in-free-pool>
               </pool>
               <destination-jndi-name>JNDIMDBQueue</destination-jndi-name>
               <connection-factory-jndi-name>MDBConnectionFactory</connection-factory-jndi-name>
     
               <initial-context-factory>weblogic.jndi.WLInitialContextFactory</initial-context-factory>
               <jms-polling-interval-seconds>10</jms-polling-interval-seconds>
               <jms-client-id>SimpleMessageBean</jms-client-id>
               <provider-url>t3://localhost:7001</provider-url>
               <trans-timeout-seconds>30</trans-timeout-seconds>
          </message-driven-descriptor>
          <jndi-name>SimpleMessageBean</jndi-name>
     </weblogic-enterprise-bean>
</weblogic-ejb-jar>
here is the ejb-jar.xml
<?xml version="1.0"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
          <enterprise-beans>
               <message-driven>
                    <ejb-name>SimpleMessageBean</ejb-name>
               <ejb-class>mdb.SimpleMessageBean</ejb-class>
               
                    <transaction-type>Container</transaction-type>
                    <trans-attribute>Required</trans-attribute>
                    <acknowledge-mode>AUTO_ACKNOWLEDGE</acknowledge-mode>
                    <message-driven-destination>
                         <destination-type>javax.jms.Queue</destination-type>
                    </message-driven-destination>
               </message-driven>
          </enterprise-beans>
          <assembly-descriptor>
               <container-transaction>
                    <method>
                         <ejb-name>SimpleMessageBean</ejb-name>
                         <method-name>onMessage()</method-name>
                    </method>
               </container-transaction>
          </assembly-descriptor>
</ejb-jar>
i m very new to this program...plz help me

Why servlet has init() method insteadof constructor

Why servlet has init() method insteadof constructor

Depends completely on the servlet. If the servlet implements SingleThreadedModel, then multiple instances of the servlet will be created.
Reason: Most servlets work quite well with multiple threads, the bulk of the variables are declared locally within the service method. Sometimes, however, the servlet needs to be able to handle multiple threads even though it is not thread safe. In such as case the SingleThreadedModel is implemented to tell the container to use a new (or one from a pool) servlet. In this case the init method will be called each time.
[As an aside: there is of course one (not obscure, but not normal) scenario where you would call the constructor of a servlet directly - this would be where you are writing a container. 'Ah!' you say, 'I will leave that kind of madness to the boys and girls at Jakarta' - however, you may wish to write a container as a test frame for you servlet, which you should be doing.]

Servlet's onMessage method in SOAP

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