Invoking servlet from mDB
Hi all;
this is the process.
1. Servlet received / creates msg.
2. Servlet Enqueues Msg on JMS queue.
3. MDB dequeues.
-- processes against DB
-- composes respoonse.
4. mdb invokes servlet with response.
servlet need not maintain state.
State information can be passed in Msg (Query and Response)
I was just wanting to find out if this possible in oc4j.
apparently, there is a process in weblogic 6.1 to support this.
Any help is appreciated.
thanks.
jayant
I would assume that you would need to do a "createSipApplicationSession" on your sip factory and then get the ID from there.
Then create a request from your session and send it.
Wouldn't you want each outgoing call to be associated with a different sip app session?
Similar Messages
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How to invoke a servlet from MDB
Hi,
Can someone please tell me how to invoke a servlet from MDB. Actually I want to have a MDB that will invoke a servlet that takes arround ~3 minutes to process and send the response back to MDB. Any small code snippet on invoking a servlet.
Thanksnope. this is probably a bad design.
but here's a hint: whenever you have a question like this, start browsing the javadocs. chances are there's a class that might help you.
i'd recommend that you look at this:
http://java.sun.com/javase/6/docs/api/java/net/HttpURLConnection.html
% -
Cannot invoke servlet from JSP
I am trying to invoke a servlet from my JSP file. At present I am getting the error:
500 Internal Server Error
java.lang.IllegalArgumentException: Resource /servlet/CreateSPSS not found
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.EvermindPageContext.forward
I understand that my JSP cannot find my servlet but I cannot identify what the correct path or amendment is.
My JSP file is located in:
default-web-app/examples/jsp/com.xml2spss.jsp
In the JSP my forward parameter is :
<jsp:forward page="/servlet/CreateSPSS" />
and my servlet (.java & .class) is located in
default-web-app/WEB-INF/classes/com/pmstation/spss/site/servlet.CreateSPSS.java
I have added the following line to Web.XML:
<servlet-mapping>
<servlet-name>CreateSPSS</servlet-name>
<url-pattern>/servlet/CreateSPSS</url-pattern>
</servlet-mapping>
Where am I going wrong??
Thankyou for any help at all on this one.Shaun,
Nice to know that you find a way that works. However, what Zsolt suggests should work; otherwise, it is a bug. That is, put the servlet definition and servlet mapping in your web.xml and then you should be able to access http://host:port/myWebContext/servlet/CreateSPSS?myParmName=myParm without seeing a response like "No resource found". Please make sure that your servlet definition come before the corresponding servlet mapping. -
Error in invoking servlet from JSP
Hi - again!
after being thoroughly reprimanded for posting on the wrong board, and hence seeing the error in my ways, all help greatly appreciated....
I have read elsewhere that it is possible to call a servlet (which produces HTML) from within a JSP, thus keeping a nice clean MVC paradigm and making it easier for non-java people to design the front-end.
I am having difficulty getting it to work and any help is much appreciated:
My servlet (Mole):
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
out.write("###some html stored in DB#####");
} finally {
out.close();
}my JSP:
<jsp:include page="Mole" flush="false"></jsp:include>the error I get
Internal error flushing the buffer in release()
StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.io.IOException: Stream closed
at org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:257)
at org.apache.jasper.runtime.JspWriterImpl.clearBuffer(JspWriterImpl.java:206)
at org.apache.jsp.CMS.services_jsp._jspService(services_jsp.java from :176)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:288)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(PortUnificationPipeline.java:380)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)Any pointer as to what I am donig wrong?
many thanks
Hin your web.xml
<servlet>
<servlet-name>Mole</servlet-name>
<servlet-class>srvlt.Mole</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Mole</servlet-name>
<url-pattern>/Mole</url-pattern>
</servlet-mapping>
package srvlt;
// Import servlet packages
import javax.servlet.*;
import javax.servlet.http.*;
// Import other Java packages
import java.io.*;
public class Mole extends HttpServlet {
public void init() throws ServletException {}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
out.write("###some html stored in DB#####");
} finally {
out.close();
}in your jsp
<jsp:include page="/Mole" flush="false"></jsp:include> -
Invoking servlet from ODB using GET
I have a requirement where i need to invoke a servlet using GET. Can anyone let me know the procedute to follow in this invocation.
Your help is appreciated
Thanks,
PHi
Try the following way to register servlets in web.xml
<web-app>
<servlet>
<servlet-name>generateSurveyServlet</servlet-name>
<servlet-class>com.robbie.servlet.generateSurveyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>generateSurveyServlet</servlet-name>
<url-pattern>/generateSurveyServlet </url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>surveyResultsHandlerServlet</servlet-name>
<servlet-class>com.robbie.servlet.surveyResultsHandlerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>surveyResultsHandlerServlet</servlet-name>
<url-pattern>/surveyResultsHandlerServlet </url-pattern>
</servlet-mapping>
</web-app>i hope this will clear u.
thanks,
nvseenu -
Invoking servlet from server (tomcat 5.5) at regular interval
Hi all
My problem is I want to send mail on 1st day of every month through form my application. But for that I don�t want to login my application. It should fire automatically from server. I am using Tomcat 5.5 for my application. This process also involved talking to database.
Is there any to achieve this?
Please help me.
Thanks in advance.these are the results of the "servlet context listener" key on google.
http://edocs.bea.com/wls/docs70/webapp/app_events.html
http://publib.boulder.ibm.com/infocenter/wasinfo/v5r1//index.jsp?topic=/com.ibm.websphere.base.doc/info/aes/ae/rweb_listeners.html
Regards,
Sebastien Degardin -
Cann't invoke servlet from my own browser
Hi Techies,
I have my written browser , which can invoke the www pages, but when i try to invoke my servlet , it doesn't show me the desired page and output like
<?xml version1.0
(which is starting of deployment , web.xml file)
Can anybody give some tips/suggestions??
Many thanks in advance....
VaibhsYes the file which is responsible for deployment is the web.xml file.If you do not mind send me this file to check it.It can be an error in the Context TAG.
-
Syntax for invoking servlet from form in a servlet context
Hi all,
I have a web application called A, put all related files in a directory B. I deployed
some JSPs into a directory C under B. Within a jsp called c.jsp in C, a servlet
is called in a form. What syntax should I use to call the servlet properly. For
the given web application A, the url syntax for it is http://server/A/C/c.jsp.
I used 'action=servlet', 'action=/servlet', but failed. For 'action=servlet',
the user is directed to http://server/A/C/servlet. The other is http://server/servlet.
Both are not correct. Any ideas?
Thanks,
Lijun
What is the servlet-mapping in the web.xml file? If this is your servlet mapping:
<servlet>
<servlet-name>CookieCounter</servlet-name>
<servlet-class>examples.servlets.CookieCounter</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>CookieCounter</servlet-name>
<url-pattern>monster</url-pattern>
</servlet-mapping>
Then the appropriate action is action=monster (or possibly action=../monster).
Hope this helps,
Robert
Lijun wrote:
> Hi all,
>
> I have a web application called A, put all related files in a directory B. I deployed
> some JSPs into a directory C under B. Within a jsp called c.jsp in C, a servlet
> is called in a form. What syntax should I use to call the servlet properly. For
> the given web application A, the url syntax for it is http://server/A/C/c.jsp.
> I used 'action=servlet', 'action=/servlet', but failed. For 'action=servlet',
> the user is directed to http://server/A/C/servlet. The other is http://server/servlet.
> Both are not correct. Any ideas?
>
> Thanks,
> Lijun
-
Calling servlet from java page flow
Hi,
I need to call servelt class from the <netui:anchor ..> tag of my jpf.
i have mapped this servlet class in the web.xml.
please tell us how to invoke servlet from the netui:anchor tag from the jpf action
method.
thanks
shashiI am calling a Servlet from JAVA Class as I am using IDE: Eclipse. The Problem is below
URL url = new URL(ServletPath);
URLConnection connet = url.openConnection();Why should the Servlet running in different Runtime print on your Eclipse Runtime. Please be more clear about the question. -
How can I invoke servlet from an <af:form> tag ?
Hi Zaro,
it depends what you'd like to do.
1. Put the result into the page: Use normal links, eg. <af:objectImage source="/graphservlet"/>2. Use it as a navigation step: edit your faces-config.xml
--olaf -
How to pass parameters/atrributes to Servlet from ALBPM
HI Friends,
I am invoking servlet from bpm using server configuration, i am able to invoke servlet, but not able to pass parameters dynamically,
Also I like to receive response parameters/attributes from servlets?
Can any body help me on this?
Look forward for response.
CheersSome helpful Docs on the WebServer component for you:
The WebServer component is used to send HTTP requests to an HTTP server and capture the responses. It supports HTTP methods GET and POST.
The body of the HTTP response is available in the WebServer.response attribute (String).
Note: This component is superseded by the Fuego.NetX.AdvancedWebServer component, which provides better performance and more functionality like support for proxies and for more HTTP methods (like PUT and DELETE).
Example: Get Oracle's website home page and save it to a file.
getFrom(WebServer, url : "http://oracle.com", args : null)
binaryResponse = Binary(text: WebServer.response,
encoding: "UTF8")
BinaryFile.writeFromBinaryTo(data : binaryResponse,
name : "/tmp/oracle_index.html",
append : false) -
Problem in invoking a servlet from another PC
hi
i am trying to invoke a servlet running on apache tomcat 5.0.28 from another PC, my j2me wireless toolkit is on one PC and it runs a MIDlet that invokes a servlet on another PC, but am getting an exception connectionNotFound....
both the computers are on LAN, what do i do?
Need guidanceNo, i think tomcat server is enough.. have u checked your servlet from browser?
I got the same error in black berry application and at that time i found that its due to servlet config in web.xml
Have u configured your servlet in web.xml?
One suggestion.. change your URL to www.google.com and then run your MIDlet.. it confermed that your midlet is OK
Http request is fine to send data from your WTK.
About apache http "NO IDEA"
Thks -
Different ways to invoke a servlet from another servlets?
Hello,
I am a bit confused today. I was thinking about all the ways by which I can invoke a servlet from another servlets. I know it can be done by creating an instance of the 2nd servlet in the 1st one. Is there any other way? such as say.... RequestDispatcher perhaps?
Here is an example to illustrate my point. I have a login.jsp which submits to login.do. login.do search through database and first authenticate email and then the corresponding password. Now its time for displayGame.do. So here how do i do? if it was a displayGame.jsp then i could have used Redirection or Forward but when it is servlets? Can I still go for Redirection or Forward??
Thank you for reading this confused post. :-)if it was a displayGame.jsp then i could have used Redirection or Forward but when it is servlets?Question: do you know what a JSP becomes when you first run it?
Answer: a servlet.
So yes, you can use a RequestDispatcher to forward/redirect to a servlet OR a JSP, whatever you like. -
How to invoke a servlet from the command line
Hi,
I have a process that needs to do something remotely. One of the ideas is to have a servlet on the other side that can do that. So the question is how can I invoke it from my process?
Thanks,First approximation to code:URL remoteTask = new URL("http://yourserver.org/yourservlet");
InputStream response = remoteTask.openStream();
// read the servlet's response from that InputStreamYou will find more comprehensive versions of this code if you search the forum. -
How to invoke a servlet from an application-URGENT
Hi,
My requirement is as follows :
I have to invoke a servlet from a client application. I am using
java.net.URL and java.netURLConnection classes to
open a connection and invoke the servlet.
I am using WebLogic5.1
my code snippet is as follows :
URL url = new URL("http://localhost:7001/urlservlet");
URLConnection connection = url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setDoInput(true);
PrintStream outStream = new PrintStream( connection.getOutputStream() );
outStream.print("message=hai");
outStream.flush();
outStream.close();
When I execute the application, Webloigc server console is displaying the
following line.
<Listen Thread> Adding Address : <machine name><ip address>
But the service method of servlet is not getting invoked at all.
Help me to find the answer.
Jeelani
jeelani <[email protected]> wrote:
> Hi Dimitri,
> Thanks a lot.That worked for me.
> But if I want to send java objects (Vectors,beans),what is the best way to
> do it.
> This is exactly what our requirement is..
If you want to send Java object you have to use POST:
URLConnection conn = ...
conn.setDoOutput(true); // makes this a POST
OutputStream os = conn.getOutputStream();
...write your objects here...
os.flush();
os.close();
InputStream in = conn.getInputStream(); // sends data to the server and
// opens input stream
..read servlet response..
.. ot just close the stream...
in.close();
> my client application need to send some java components to our main server
> located in our head office.The servlet will read the objects and execute the
> functionality..
> I really appreciate for the fast response from you.
> Dimitri Rakitine <[email protected]> wrote in message
> news:[email protected]...
>> Try it like this:
>>
>> URL url = new URL("http://localhost:7001/urlservlet?message=hai");
>> URLConnection connection = url.openConnection();
>> InputStream in = connection.getInputStream();
>> in.close();
>>
>>
>> jeelani <[email protected]> wrote:
>> > Thanks for the quick response.
>>
>> > Actually right now it doesn't matter whether it is by GET or by POST.
>> > Add my clinet application just needs to send data to Servlet and nothing
> to
>> > get in return.Thats why I am using connection.getOutputStream().
>>
>> > since application will not be reading anything from servlet, I don't
>> > think it is required to use connection.getInputStream().
>> > (I am sorry, if I am wrong).
>>
>> > Can you please help me out. weblogic server is able to get the address
>> > from where the request is coming. Only problem is servlet is not getting
>> > invoked.
>>
>> > regards,
>> > Jeelani
>>
>>
>> > Dimitri Rakitine <[email protected]> wrote in message
>> > news:[email protected]...
>> >> Are you trying to do get or post? First you set method to GET
>> >> and then you do the POST.
>> >>
>> >> And add InputStream is = connection.getInputStream() - that will
>> >> result in HttpURLConnection sending data to the server and getting
>> >> back the response.
>> >>
>> >> jeelani <[email protected]> wrote:
>> >> > Hi,
>> >>
>> >> > My requirement is as follows :
>> >>
>> >> > I have to invoke a servlet from a client application. I am using
>> >> > java.net.URL and java.netURLConnection classes to
>> >> > open a connection and invoke the servlet.
>> >>
>> >> > I am using WebLogic5.1
>> >>
>> >> > my code snippet is as follows :
>> >>
>> >> > URL url = new URL("http://localhost:7001/urlservlet");
>> >>
>> >> > URLConnection connection = url.openConnection();
>> >>
>> >> > connection.setRequestMethod("GET");
>> >> > connection.setDoOutput(true);
>>
>> >> > PrintStream outStream = new
>> > PrintStream( connection.getOutputStream() );
>> >> > outStream.print("message=hai");
>> >> > outStream.flush();
>> >> > outStream.close();
>> >>
>> >> > When I execute the application, Webloigc server console is displaying
>> > the
>> >> > following line.
>> >>
>> >> > <Listen Thread> Adding Address : <machine name><ip address>
>> >>
>> >> > But the service method of servlet is not getting invoked at all.
>> >>
>> >> > Help me to find the answer.
>> >>
>> >> > Jeelani
>> >>
>> >> --
>> >> Dimitri
>> >> http://dima.dhs.org
>>
>>
>>
>> --
>> Dimitri
>> http://dima.dhs.org
Dimitri
http://dima.dhs.org
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