Communication between JSF components and servlets

Hi, I have some JSF components in my jsp page like this one:
<h:form rendered="true" id="myForm">
               <h:selectOneListbox>
                    <f:selectItem itemdisabled="false" itemlabel="item1" itemvalue="1"></f:selectItem>
                    <f:selectItem itemdisabled="false" itemlabel="item2" itemvalue="2"></f:selectItem>
                    <f:selectItem itemdisabled="false" itemlabel="item3" itemvalue="3"></f:selectItem>
               </h:selectOneListbox>
          </h:form>and I have this servlet:
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class myServlet extends HttpServlet {
     public myServlet() {
          super();
     public void destroy() {
          super.destroy(); // Just puts "destroy" string in log
     public void doGet(HttpServletRequest request, HttpServletResponse response)
               throws ServletException, IOException {
     public void doPost(HttpServletRequest request, HttpServletResponse response)
               throws ServletException, IOException {
     public void init() throws ServletException {
}Could you please help me:
*1.* How to populate my listbox using my servlet?
and also
*2.* How to get the selected item in my servlet every time that user change the selected option of list box?

Where did you learn about JSF components? That same book/tutorial/document should also cover backing beans.
You may find under each the following tutorials useful to get some more insights in JSF:
Java EE tutorial part II chapter 10: [http://java.sun.com/javaee/5/docs/tutorial/doc/bnaph.html]
JSF + Eclipse + Tomcat: [http://balusc.blogspot.com/2008/01/jsf-tutorial-with-eclipse-and-tomcat.html]
Follow the JSF lifecycle: [http://balusc.blogspot.com/2006/09/debug-jsf-lifecycle.html]

Similar Messages

  • Binding JSF components and servlets to eachother

    Hi, I have some JSF components in my jsp page like this one:
    <h:form rendered="true" id="myForm">
                   <h:selectOneListbox>
                        <f:selectItem itemdisabled="false" itemlabel="item1" itemvalue="1"></f:selectItem>
                        <f:selectItem itemdisabled="false" itemlabel="item2" itemvalue="2"></f:selectItem>
                        <f:selectItem itemdisabled="false" itemlabel="item3" itemvalue="3"></f:selectItem>
                   </h:selectOneListbox>
              </h:form>and I have this servlet:
    import java.io.IOException;
    import java.io.PrintWriter;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    public class myServlet extends HttpServlet {
         public myServlet() {
              super();
         public void destroy() {
              super.destroy(); // Just puts "destroy" string in log
         public void doGet(HttpServletRequest request, HttpServletResponse response)
                   throws ServletException, IOException {
         public void doPost(HttpServletRequest request, HttpServletResponse response)
                   throws ServletException, IOException {
         public void init() throws ServletException {
    }Could you please help me:
    *1.* How to populate my listbox using my servlet?
    and also
    *2.* How to get the selected item in my servlet every time that user change the selected option of list box?

    Please don't crosspost topics over all places. Stick to one topic.
    Continue here: [http://forum.java.sun.com/thread.jspa?threadID=5299291]

  • Communication between a driver and application.

    Communication between a driver and application.
    I am writing a driver for a PCI card. I have found very good examples of how the driver should be build.
    Where do I find the information about how the user mode application should be talking the driver.
    So If you have any idea that will help me, please let me know.

    Hi,Sir
    This for your reference.
    It will create pci adapter device node at /devices .
    You can use AP function call ioctl to Communicate with your device driver.
    static int
    xxattach(dev_info_t *dip, ddi_attach_cmd_t cmd)
    int instance = ddi_get_instance(dip);
    switch (cmd) {
    case DDI_ATTACH:
    allocate a state structure and initialize it.
    map the device�s registers.
    add the device driver�s interrupt handler(s).
    initialize any mutexes and condition variables.
    create power manageable components.
    * Create the device�s minor node. Note that the node_type
    * argument is set to DDI_NT_TAPE.
    if (ddi_create_minor_node(dip, "minor_name", S_IFCHR,
    instance, DDI_NT_TAPE, 0) == DDI_FAILURE) {
    free resources allocated so far.
    /* Remove any previously allocated minor nodes */
    ddi_remove_minor_node(dip, NULL);
    return (DDI_FAILURE);
    * Create driver properties like "Size." Use "Size"
    * instead of "size" to ensure the property works
    * for large bytecounts.
    xsp->Size = size of device in bytes;
    maj_number = ddi_driver_major(dip);
    if (ddi_prop_update_int64(makedevice(maj_number, instance),
    dip, "Size", xsp->Size) != DDI_PROP_SUCCESS) {
    cmn_err(CE_CONT, "%s: cannot create Size property\n",
    ddi_get_name(dip));
    free resources allocated so far
    return (DDI_FAILURE);

  • What is the difference between, Configuration Components and Software Comp?

    Experts,
    Can somebody tell me, What is the difference between, Configuration Components and Software Components?

    Hi,
    Configuration Objects:
    You use configuration objects to help you to structure and organize your configuration data in the Integration Directory
    You can group configuration objects by using configuration scenarios.
    The following configuration objects exist:
    1) Collaboration profile objects
        -Communication Party
       -Service
       -Communication Channel
    2)  Logical routing objects
      - Receiver determination
      - Interface determination
    3)  Collaboration agreement objects
       -   Sender Agreement
       -  Receiver Agreement
    Refer the below help which I did search on SDN:
    http://help.sap.com/saphelp_nw04/helpdata/en/fe/131eb4ef2fb344abf471c9eac0063a/frameset.htm
    Softweare component:
    http://help.sap.com/saphelp_nw04/helpdata/en/12/003479fa4c2d4aa9d175dcbb081d66/frameset.htm
    http://help.sap.com/saphelp_nw04/helpdata/en/37/ae463c75a8477ee10000000a114084/frameset.htm
    Thnx
    Chirag

  • Communication between HP eprint and Google Cloud Print

    Hi,
    the communication between HP eprint and Google Cloud Print seems to be broken. At least for me.
    The documents do get printed when I print vio Chrome browser or Cloud Print dashboard -- but the status in cloud print remains as "submitted". It seems like somehow the HP eprint status doen't get reported back to cloud print. In HP eprintcenter the log says "printed".
    Well, I wonder who will take care of this problem ...  (Hope it will not result in fingerpointing only ...)
    Thanks for your support!
    Best,
    George
    This question was solved.
    View Solution.

    Are you able to log back in later and the status at Google Cloud print update to reflect the true outcome of the print job? Or does it just remain as "submitted". Otherwise, if it is printing and showing in the log at ePrint Center (EPC) as printed, the issue would not be on the ePrint side but on Google's
    I am a former employee of HP...
    How do I give Kudos?| How do I mark a post as Solved?

  • Communication between the computer and the disc drive failed

    The disc can’t be burned because because communication between the computer and the disc drive failed (error code 0x80020022). This computer has been out of the box for less than a month and this has been a growing problem.

    My problem was FIXED at the apple store..... there was something wrong in the system preferences and the genius deleted something that recreated it's self. Surely enough we we're able to burn a 600 mb dmg of nothing onto a few test disks. For anyone having this issue...it's NOT The media, it's some configuration issue within the computer's preferences. I'm telling you all to take your machine to the nearest apple store and have them fix it, if your machine is still under warranty the fix is free. There was no hardware issue, so the optical drive was not replaced.

  • Communication between non SAP and SAP

    HI,
    do you have some information about communication between non SAP and ERP (WebAs) SAP System ?
    I would like to receive an xml file or xml IDoc from a Java Plattform (non SAP) into our SAP ERP System as an own defined IDoc.
    remember: we don´t have a converter like XI.
    What about using a proxy (do you have some information/blog how to use that) ?
    What about using a webservice (do you have some information/blog how to use that) ?
    What about storing the xml on the application server (do you have some information/blog how to use that) ?
    How to transform xml to IDoc ?
    other methods ?
    Thanks for your help.
    Gordon

    Here is a link to connecting MS SQL Server with SAP using Open Hub connection.
    http://msdn.microsoft.com/en-us/library/dd299430(SQL.100).aspx
    This might give you some insight into connecting with Non SAP Systems.
    I have used the information from this link to export data from SAP to MS SQL Server.
    Good Luck.
    MP.

  • Error 2032 in communication between Flex Client and WCF

    Hi All,
    I'm trying to establish communication between Flex Client
    and WCF service.
    WCF service accepts gZip compressed data and returns gZip
    compressed results.
    So I used Flex ByteArray.compress() and
    ByteArray.uncompress() for this purpose. However, it throws error
    2032.
    The gZip compression/decompression uses MemoryStream class in
    C#. Based on my previous experience, memory stream communication
    between Flex and C# gives erro 2032.
    Is there a work around for this?
    Thanks,
    Vishal

    I read some thread in the forum, and found somebody had the similar problem with me. Just want to know how to settle this problem.
    In the client/server program. Client is a JAVA program and Server a
    VC++ program. The connection works, and the problem appears after some time. The Client sends a lots of requests to Serverm, the server seems receive nothing. But at the same time, the server is able to send messages to Client. The Client also can get the messages and handle them. Don't understand why there this problem and why it appears when it wants.
    The client is a Win2k platorm with JDK1.3.1 and the server is also a Win2K platform with VC++ 6.0.
    In the Client, using:
    inputFromServer = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    outputToServer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())),true);
    Hope can get your help.

  • I have burned CDs before from 2gb to 7gb using different types of discs. Now I get this error message Apple error The disc can't be burned because communication between the computer and the disc drive failed (error code 0x80020022). What should I do

    I have burned CDs before from 2gb to 7gb using different types of discs. Now I get this error message Apple error The disc can't be burned because communication between the computer and the disc drive failed (error code 0x80020022). What should I do

    Reset the SMC, as per > Resetting the System Management Controller (SMC)
    1. Shut down the computer.
    2. Unplug the computer's power cord.
    3. Wait fifteen seconds.
    4. Attach the computer's power cord.
    5. Wait five seconds, then press the power button to turn on the computer.
    Then zap the PRAM/NVRAM as per > About NVRAM and PRAM
    1. Shut down the computer.
    2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    3. Turn on the computer.
    4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    6. Release the keys.
    Then retry the Disc Drive.

  • I have problems in communication between my notebook and Epson printer. It goes offline everytime I unplug it from the notebook and there is no way how to switch it on. Although the printer is recognized and scanning is not a problem. Any solution?

    I have problems in communication between my notebook and Epson printer. It goes offline everytime I unplug it from the notebook and there is no way how to switch it on. Although the printer is recognized and scanning is not a problem. Any solution?

    this is exactly the kind of response i expected, almost begged support to please not do this to me and yet there it is another meaningless, non helpful, standard template response to restart my apple tv.
    this does NOT work which is why i am contacting you. i have tried all suggestions about unplugging and restarting and nothing works.
    i live in an apartment and logon to the provided wifi wireless. so i do not have access to a router. however, management says they have talked with their provider and have been assured that the required ports are available.
    remember all the jokes about how bad windows was because the solution was always to re boot. funny huh? how is apple any different.
    i have been to the local apple care store and they are clueless, too.
    should we just end it here and you admit that i will not be getting any support from apple on this one? i got the ipad because my kids were such big fans. it is difficult for me to share their enthusiasm.
    at this point i am just curious about how you say you cannot support your own product so i can complete my file on this contact.
    thanks...sorry it was you who got this problem..

  • Communication between middle tier and infrastructure

    Hi!
    We have seven OAS machines with two infrastructure-instances and seven middle tier - instances which use these infrastructure.
    My short and simple question is: how does the communication between the middle tier and the infrastructure work? is there any file on the middle tier where you can see which middle tier is assigned to which infrastructure? there is no entry in the tnsnames.ora and i can't see any hint in the opmn.xml ...
    Regards

    If you just want to see which midtier is bound to which infrastructure you can check $ORACLE_HOME/config/ias.properties . This doesn't explain how communication works though.
    The process is roughly sad like this:
    Every midtier has a dcm-daemon. This daemon contancts the infrastructure upon start, stop & restart automagically. Next to this the daemon also contacts the infrastructure if you make changes using the enterprise manager website. If you make changes manually, you have to for the daemon to contact the infrastructure by issuing dcmctl configupdate (of updateconfig, this I mess up all the time ;) )
    The infrastructure stores certain parts of the configuration in the metadata repository, other parts are replicated to other components in the farm (e.g. if you created clusters).
    Communication is made by issueing secure ldap statements on port 636.
    This is just the basics. For more insights you either have to start reading manuals / metalink or contact an expert ;)

  • Communication between Best Buy and Apple

    Where is the communication between these two companies? It's frustrating to have NO CLUE if a phone will come in a day or in 5 weeks. Who at Apple is deciding what they end to what stores? Obviously, Best Buy has to pay for the phones. There has to be some sort of communication. 
    Would it really be that hard for someone high up in Best Buy to communicate with Apple? Maybe a list from each store of their orders and what they are waiting on. Give that to Apple. Apple can give some sort of answer. Exepect this much in this time frame... expect this much later. I mean, something. Instead of leaving everyone in the dark, completely. 
    Someone at Best Buy corporate has to have SOME clue how Apple is shipping and to what stores. To say no one has no clue at all, is nuts. And if it's true... Best Buy needs to get a clue. DO SOME WORK FOR YOUR CUSTOMERS. At least get some truth, so if we need to go elsewhere, we can. It would be better for both sides.

    Apparently since they come on UPS, they don't know when the shipments are coming in or how much. Which I think is bull.
    If that's the case, what I want to know is HOW do they know they received the amount they were expecting? If they don't know how much they're getting or when they're getting a shipment, then what's stopping the delivery man from stealing a box, and they wouldn't know any better? Maybe the higher up manager's know, and they aren't allowed to reveal that info, but there has to be a checks system in there somewhere verifying the stock received.

  • Communication between Lab view and Controller via USB

    USB communication between C8051F320 and Lab View. I try doing methods given in the NI site(http://zone.ni.com/devzone/cda/tut/p/id/4478) and atlast, it gives me error −1073807302 so if any one can answer my question please do post me the details concerned to it.

    My devices show up as NI-VISA USB but I'm not sure if that makes a difference and I'm not using USB RAW either. One thing that you can run is a VISA Property node like below and see what it reports. Also, what version of VISA are you using? If you are not using 4.0, you can download it from http://digital.ni.com/softlib.nsf/webcategories/85256410006C055586256BBB002C0E91?opendocument&node=1....
    Message Edited by Dennis Knutson on 01-31-2007 07:29 AM
    Attachments:
    USB RAW Property.PNG ‏3 KB

  • IPhone SDK : Communication between iPhone client and a remote server

    Hi,
    This is w.r.t iPhone Cocoa Touch native application.
    i need to populate my application 's data from a remote application server ( which in turn connects to the database) . I require some tips in the communication between client sitting on the iPhone and the remote application server. I am planning to proceed in XML transaction way.
    I referred the SeismicXML sample application provided by Apple. In this sample,client reads the physically existing xml file from @"http://earthquake.usgs.gov/eqcenter/catalogs/eqs7day-M2.5.xml"; and the client parses the xml file and display the content on the table view.
    i have following 2 queries ,
    1. I do not want to read from a physically present file,i want the data to be transferred on the go.
    Means, request should be sent from the client to a application server and the server process returns the data in form of xml file ( but its not creating any physical xml file) .
    Basically i am looking for request - response concept.
    2. Can we call a java process(which returns xml data) running on a remote server from the cocoa touch client.? If not java process,what would be other best way...
    i am going through the Apple provided frameworks. Do any of the iPhone SDK frameworks support this request? If some one has any idea on the above mentioned queries, pls help me.
    any pointers will also be helpful.
    It might be too early to talk about these,but i have to take some business decision related on this.
    thanks in advance.

    You already know how to send a string via HTTP Post? And you know how to make XML into a string? Put the two together.

  • Communication between SCM ICH and ECC

    Hi every one,
    We are trying to implement SCM ICHin our landscape. Can any one explain me, what all the stuff needed to configurations communication between SCM ICH to ECC. How to do that also? As per knowledge I head PI(Process Integration) is involved in the communication, but I do not know what all the configurations I need to do for that. Please let what all is needed for that. Can anyone provide me rlated documents.
    Regards
    Jack

    Hi
    The Connectivity settings are fully explained for cross systems in the Best Business Practice documents from SAP:
    [BBP Connectivity Guide|http://help.sap.com/bp_scmv250/BBLibrary/Documentation/B02_BB_ConfigGuide_EN_DE.doc]
    and the Replication Best Practice document:
    [BBP Replication|http://help.sap.com/bp_scmv250/BBLibrary/Documentation/B05_BB_ConfigGuide_EN_DE.doc]
    Other ICH configuration can be found in the Supplier Collaboration Document:
    [BBP Supplier Collaboration|http://help.sap.com/bp_scmv250/BBLibrary/Documentation/S34_BB_ConfigGuide_EN_DE.doc]
    There really is a lot of good documentation in SAP's own systems without having to email stuff around  ;o)
    Regards
    Ian

Maybe you are looking for

  • Unable to install Windows 7 via Bootcamp

    I have an early 2008 Apple Mac Pro Dual 2.8 GHZ processors with 16 GB of RAM. I have a WD Veliciraptor 300 GB hard drive in Bay 1 and a WD 320 GB drive in bay two. After I got the Mac system set up with all of my programs/user accounts/software updat

  • Photo sync doesn't work.

    Hi, I'm using iPhone 4S iOS 5.0.1 and Windows7 computer. I took a trip somewhere, took picture (JPG files) with digital camera (Canon DIGITAL IXUS 110 IS) , and I want to send photos to my iPhone. But It doesn't work. And no error codes. Just iPhone

  • Error in JMS Sender (CPALookupException)

    Hi, I have a JMS to SOAP Sync scenario, and i'm getting an error while returning answer to JMS. the error is: com.sap.aii.af.service.cpa.impl.exception.CPALookupException : Couldn't retrieve binding for the given channelID: can someone help ? changin

  • Thumbnail Size when Browsing in PS

    I am a brand new Mac user and have just converted over my Photoshop from Windows to Mac.  I am trying to increase the thumbnail size when I am browsing my images to open directly from Photoshop without going through Bridge first.  I have increase the

  • Running Visual Studio 2005 on a Mac with Intel Core Duo chip?

    My nephew has been teaching himself Visual Basic (Visual Studio 2005) for several months on an old, out-dated PC laptop. My sister, who knows nothing about computers and didn't want to ask for help (in case somebody tipped off my nephew) wanted to bu