Dispatch Action

Hi how to use DispatchAction in struts

Hi,
Whenever working with dispatch action, while specifying its button name or link name specify an attribute called "property", give some logical name for this attribute and in struts-config.xml, the same attribute with logical name should be used. so when ever u send multiple requests with in a same page , it gets processed, do not forget to implement ur methods with same execute() signature.

Similar Messages

How to call another action from Struts dispatch action?

Hi all,
there is a method in dispatch action that needs data from another chained action. How should other action determine which method in dispatch action will receive response and how should these data be returned from called action? Called action does not have associated form bean
thanks,

Not sure, why are there then "chained actions" is struts practice? Struts allows action without form bean to be configured and the action is a class?

Regarding dispatch action in struts

how to create dispatch action uring button in struts.

Have a hidden attribute named "method" in the Form and hardcode it with the method name which you need to post to...
Rest is all same like regular Action...
Thanks and regards,
Pazhanikanthan. P

Struts input forward using dispatch action

I have a insert jsp and another update jsp but one action with the dispatch concept named daction.In case of errors i forward using input forward(), but in config file i have can specify only one path in
<action input ="/insert.jsp"/>
but in case for the update error to pass to update.jsp how to handle...........

request.getRequestDispatcher("reqresAction.action").forward(request, response);It's right.
But I believe you forgot about a tag like <dispatcher>FORWARD</dispatcher> in your <filter-mapping>(web.xml).
I use a rediration from servlet to action and it works fine.

Dispatch action in struts portlet

Hi ,
I am tryin g to call a Action which extends dispatchaction with two parameters in the query string . The version is (pdk 10.1.2.0.2)
The values are appended in the query string but the error message in log seems to be the "actionCmd" calue is not passed to invoke the action.
<jsp:useBean id="params" scope="session" class="java.util.HashMap"/>
<c:set target="${params}" property="actionCmd" value="seminarDetails"/>
<c:set target="${params}" property="Menu" value="customer"/>
<pdk-struts-html:link action="/seminarDetails" name="params" ></pdk-struts-html:link>
ERROR: AbstractResourceRenderer.renderBody - Resource
"/seminarDetails.mcs;jsessionid=0ad16e5530d74f3fe75da106493cbb4dd7fbc0bb634d.e34RahmKa3mRay0Lc3aKbhiLbxaKe6fznA5Pp7ftolbGmkTy?Menu=customer&'amp;actionCmd=seminarDetails"
returned HTTP Status: 400. Error message: Request[seminarDetails] does not contain handler parameter named actionCmd. Content returned
follows....
What am i doing wrong?
Thanks
Prem

Still I am having the same issue. Any clues?

Values from JSP to Struts Action Class

Dear All,
Am working on a small struts project, i want to get values from JSP in the Action class, i tried with sending variables using request through URL, it works fine, any other way is there to send the values from JSP to action class. Am not having any input fields in the JSP.I have links.
Thanks,
vyrav.

I have a dispatch action for that am calling the action like this viewfiles.do?parameter=edit, and i have to send a variable ID from the same page, so am doing like this through java script, viewfiles.do?parameter=edit&id=10. Am able to get the id in the dispatch action edit, but when i start tomcat with security manager its not calling the action itself and its giving accesscontrol exception, but when i directly type viewfiles.do in URL its calling the action.
I dont know wats the problem, tomcat security manager not allowing this. Please help me.
Thanks,
vyrav.

[SOLVED]Network Manager dispatcher unexpected unmounting davfs folders

I have used Network Manager dispatcher to configure automatic mount of cloud storage using webdav. i have used davfs2 to perform mounting and wrote a script for NM dispatcher.
If i run /etc/NetworkManager/dispatcher.d/10-YandexDisk.sh manualy all works perfect.
If this script will be executed by NM-dispatcher all will fine(YandexDisk mounts successfully, sycronization - successfully), but after ~10 seconds mount.davfs gets signal 15.
sudo systemctl status NetworkManager-dispatcher
NetworkManager-dispatcher.service - Network Manager Script Dispatcher Service
Loaded: loaded (/usr/lib/systemd/system/NetworkManager-dispatcher.service; enabled)
Active: inactive (dead) since Wed 2013-07-31 23:12:55 EEST; 11s ago
Process: 12132 ExecStart=/usr/lib/networkmanager/nm-dispatcher.action (code=exited, status=0/SUCCESS)
Jul 31 23:12:44 DellLaptop nm-dispatcher.action[12132]: --- yandex.ru ping statistics ---
Jul 31 23:12:44 DellLaptop nm-dispatcher.action[12132]: 2 packets transmitted, 2 received, 0% packet loss, time 1000ms
Jul 31 23:12:44 DellLaptop nm-dispatcher.action[12132]: rtt min/avg/max/mdev = 36.570/37.776/38.983/1.222 ms
Jul 31 23:12:44 DellLaptop mount.davfs[12138]: davfs2 1.4.7
Jul 31 23:12:44 DellLaptop mount.davfs[12138]: mount.davfs -o auto,nodev,dir_mode=755,exec,file_mode=755,gid=users,_netdev,rw,uid=lexa https://webdav.yandex.ru/ /home/lexa/.../YandexDisk
Jul 31 23:12:44 DellLaptop nm-dispatcher.action[12132]: >mounted https://webdav.yandex.ru/ to /home/lexa/Data/YandexDisk
Jul 31 23:12:44 DellLaptop nm-dispatcher.action[12132]: >exiting!!
Jul 31 23:12:55 DellLaptop mount.davfs[12140]: pid 12140, got signal 15
Jul 31 23:12:55 DellLaptop mount.davfs[12140]: unmounting /home/lexa/Data/YandexDisk
Jul 31 23:12:55 DellLaptop mount.davfs[12140]: unmounting failed
Why does this happen? Who send this signal ?
/etc/NetworkManager/dispatcher.d/10-YandexDisk.sh
#!/bin/bash
#this script will mount WebDav folder
# by pirat9600q
#given arguments are
#$1 is interface name
#$2 is state "up" or "down"
eth="enp7s0" #ethernet interface
wlan="wlp8s0" #wireless interface
ignore_connections="Pirat9600q" #WiFi SSIDs that must be ignored
mount_dir="/home/lexa/Data/YandexDisk" #mount point directory
remote_server="https://webdav.yandex.ru/" #server address
#local acces options
local_user="lexa" #files owner user
local_group="users" #files owner group
echo "<<<started with '$1' and '$2' arguments>>>"
echo "> our mount dir is '$mount_dir'"
echo "> and remote server is '$remote_server'"
case "$2" in
up)
#first of all we need to check internet connection
if (ping -c 2 -q yandex.ru); then
#we are online
if [ "$1" = "$wlan" ]; then
#Does this network is ignored ?
SSID=$(iwgetid -r)
for x in $ignore_connections; do
if [ "$x" = "$SSID" ]; then
echo "> WiFi SSID '$SSID' is in ignore list, exiting"
exit
fi
done
fi
if [ ! -d "$mount_dir" ]; then
fusermount -u "$mount_dir"
fi
if(mount.davfs -o auto,nodev,dir_mode=755,exec,file_mode=755,gid=$local_group,_netdev,rw,uid=$local_user "$remote_server" "$mount_dir"); then
echo ">mounted $remote_server to $mount_dir"
echo ">invoking syncronization script"
/home/lexa/.scripts/SyncYandexDisk.sh
else
echo ">error mounting $remote_server to $mount_dir !!!"
fi
else
echo ">network down";
exit
fi;;
down)
echo ">unmounting '$mount_dir'"
fusermount -u "$mount_dir"
echo ">removing $mount_dir"
rmdir $mount_dir
echo ">finished";;
esac
echo ">exiting!!"
exit
/home/lexa/.scripts/SyncYandexDisk.sh
#!/bin/bash
#this script will synchronize local storage
#with mounted Yandex Disk folder
# by pirat9600q
source_dir="/home/lexa/Data/YandexDisk/" #mount point directory
dest_dir="/home/lexa/Data/ARC/CloudSync/" #local storage location
echo "<<<started with:"
echo " source folder '$source_dir'"
echo " and destination folder '$dest_dir'"
if [ ! -L ${source_dir}Foto ]; then #if not link
echo ">invoking syncronization from '$source_dir' to '$dest_dir'"
echo ">syncronizing 'Foto' folder"
if !(rsync --quiet --recursive --update --executability --owner --group --delete-before ${source_dir}Foto/ ${dest_dir}Foto/); then
echo ">>error"
else
echo ">>success"
fi
echo ">syncronizing 'Documents' folder"
if !(rsync --quiet --recursive --update --executability --owner --group --delete-before ${source_dir}Documents/ ${dest_dir}Documents/); then
echo ">>error"
else
echo ">>success"
fi
else
echo ">syncronization will not be made, because source is fake"
fi
echo ">exiting"
exit 0
P.S. sorry for my English
Last edited by pirat9600q (2013-08-02 08:14:44)

I solved the problem. Here is a little explanation.
After NetworkManager establishes network connection, NetworkManager-dispatcher service is started( for ~10 seconds). This service execute /usr/lib/networkmanager/nm-dispatcher.action, which execute scripts in /etc/NetworkManager/dispatcher.d. After exiting nm-dispatcher.action mount.davfs process appears in NetworkManager-dispatcher`s CGroup. By default all processes in CGroup must be killed when service stops. To change this behavior I have added KillMode=process to [Service] section of NetworkManager-dispatcher.service file.
sudo nano /usr/lib/systemd/system/NetworkManager-dispatcher.service
Here is it`s code now.
[Unit]
Description=Network Manager Script Dispatcher Service
[Service]
Type=dbus
BusName=org.freedesktop.nm_dispatcher
ExecStart=/usr/lib/networkmanager/nm-dispatcher.action
KillMode=process
[Install]
WantedBy=multi-user.target
Alias=dbus-org.freedesktop.nm-dispatcher.service

Network Manager Dispatcher???

Can someone point me to a document that explains just how the hell to set this up....the wiki is very vague and confusing. I find some posts here saying to load networkmanager-dispatcher in the DAEMONS in rc.conf...but t.hat just causes an error message to the effect of "can't find this daemon" when I boot up... Please help. I'm trying to get my cifs mounts in fstab to mount up AFTER the network is connected. Thanks

Thanks for tip about journalctl!! Made a big difference.
Here is what the script is telling me:
Apr 03 11:45:08 orphan nm-dispatcher.action[553]: Script '/etc/NetworkManager/dispatcher.d/50-mount_sshfs_share_gohilton_2223.sh' took too long; killing it.
I'm guessing the ssh part where it attempts to connect to the remote server and mount the remote ssh is taking to long however even using journalctl in verbose mode really doesn't confirm this assumption.
I'm wondering if this would best be done with systemd unit files?

Network Manager Dispatcher with NFS/Autofs

I'm looking to see what is the most recommended method of starting automounted nfs shares after network manager has brought up a wireless connection.
Currently, I'm using the network manager dispatcher and I have dispatch files for:
netfs
autofs
In rc.conf DAEMONS I still have
rpcbind
nfs-common
Should I make dispatcher files for rpcbind and nfs-common as well? What do people around here consider the proper way to do this?

Thanks for tip about journalctl!! Made a big difference.
Here is what the script is telling me:
Apr 03 11:45:08 orphan nm-dispatcher.action[553]: Script '/etc/NetworkManager/dispatcher.d/50-mount_sshfs_share_gohilton_2223.sh' took too long; killing it.
I'm guessing the ssh part where it attempts to connect to the remote server and mount the remote ssh is taking to long however even using journalctl in verbose mode really doesn't confirm this assumption.
I'm wondering if this would best be done with systemd unit files?

Network Manager Dispatcher returns error code 1 on tested scripts

I'm trying to write a simple script to test the network manager dispatcher but while it's working when I manually launch the script, the nm dispatcher print "nm-dispatcher.action: Script '/etc/NetworkManager/dispatcher.d/start_dropbox.sh' exited with error status 1" into the logs.
#!/bin/sh
IF=$1
STATUS=$2
/bin/su USERNAME -c "/usr/bin/notify-send lol woot"
exit $?
I tried using absolute paths, just the commands, running with sudo(although the scripts should be run as root) and without su. I tested the script as root and as a simple user using a terminal and it works just fine every time.
echo seems to work fine as I don't get any errors in the logs, but that way I can't see what's inside $1 and $2 when the dispatcher calls the script and I can't think of any way to debug the script which doesn't involve notify-send.
I'm sure I'm missing something very simple here, but I can't see it myself and searching google and the arch forums hasn't helped me any.

I solved the problem. Here is a little explanation.
After NetworkManager establishes network connection, NetworkManager-dispatcher service is started( for ~10 seconds). This service execute /usr/lib/networkmanager/nm-dispatcher.action, which execute scripts in /etc/NetworkManager/dispatcher.d. After exiting nm-dispatcher.action mount.davfs process appears in NetworkManager-dispatcher`s CGroup. By default all processes in CGroup must be killed when service stops. To change this behavior I have added KillMode=process to [Service] section of NetworkManager-dispatcher.service file.
sudo nano /usr/lib/systemd/system/NetworkManager-dispatcher.service
Here is it`s code now.
[Unit]
Description=Network Manager Script Dispatcher Service
[Service]
Type=dbus
BusName=org.freedesktop.nm_dispatcher
ExecStart=/usr/lib/networkmanager/nm-dispatcher.action
KillMode=process
[Install]
WantedBy=multi-user.target
Alias=dbus-org.freedesktop.nm-dispatcher.service

Network Manager dispatcher.d

I've created a script that I'd like Network Manager to run after the network is up. I can run the script as root manually if I pass or set the $status variable and everything works, however I can't seem to get the script to run when I start NetworkManager service. Where does NetworkManager log since there is no daemon.log file in /var/log?
Following script is within /etc/NetworkManager/dispatcher.d/ with permissions of 711.
Here is the script (very similar to what was posted in Arch Wiki):
#!/bin/bash
USER='xxxx'
REMOTE='[email protected]:/home/xxxx'
LOCAL='/home/xxxx/mnt_sshfs'
OPTIONS="-o idmap=user -o follow_symlinks -C -p 22"
interface=$1 status=$2
case $status in
up)
sleep 5
#expect fwknop daemon call (Which is run as 49_fwknopcall)
su "$USER" -c "sshfs $OPTIONS $LOCAL $REMOTE"
down)
fusermount -u "$LOCAL"
esac

Thanks for tip about journalctl!! Made a big difference.
Here is what the script is telling me:
Apr 03 11:45:08 orphan nm-dispatcher.action[553]: Script '/etc/NetworkManager/dispatcher.d/50-mount_sshfs_share_gohilton_2223.sh' took too long; killing it.
I'm guessing the ssh part where it attempts to connect to the remote server and mount the remote ssh is taking to long however even using journalctl in verbose mode really doesn't confirm this assumption.
I'm wondering if this would best be done with systemd unit files?

I'm confused with the struts.action and those in the actions package-help

hi all
looking at the struts framework particularly the org.apache.struts.actions package, i am a bit of confused as to which abstract action class i need to extend in my application. is there any guideline that shows in what scenario i will need to extend which action? how would i ever know the purpose of each one and how and when to extend it?
and also i am even more confused when i saw org.apache.struts.action.action class. doesn't this one handle all? most tutorials i have seen reference this class. why do we have others in the actions package?
your help is much appreicated . thanks.

Simple actions just extend org.apache.struts.action.Action.
Those actions in the org.apache.struts.actions package are utility Actions that provide you with extra functionality.
The [url http://struts.apache.org/api/org/apache/struts/actions/package-summary.html]struts api describes the basics of each one.
Commoonly used ones that (to me) are of more interest:
ForwardAction is pretty much just a placeholder that lets you specify a url to forward to when you don't want to write an entire Action.
Dispatch action (and its siblings LookupDispatchAction, MappingDispatchAction) are most interesting because they let you use the same action for multiple events.
In effect it is writing multiple "execute" methods in one action. The Dispatch action determines which one to call. It is useful for writing CRUD actions and keeping all that code in one class.
Hope this helps some,
evnafets

How to update value stored in a table when we select a value from a list

In my jsp page i have given
<html:select property="function" >
     <html:option value="select">Select Actions</html:option>
<html:option value="open">Marks as open</html:option>
<html:option value="closed">Marks as closed</html:option>
</html:select>
I am using lookup dispatch action in action class
public class LoginAction extends LookupDispatchAction{
protected Map getKeyMethodMap() {
          Map map=new HashMap ();
          map.put("open","open");
          map.put("closed","closed");
          return map;
public ActionForward open(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
          System.out.println("success");
          return mapping.findForward("success");
     public ActionForward closed(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
          System.out.println("success");
          return mapping.findForward("success");
but when i select a value from the list,the corresponding action is not occuring.What should i put in my code??

Put your code between the code tags, it makes it so much easier to read.
To do that, just highlight your code and click on the "code" found between " and the circled ?.
From what I can read of your code I don't even see a table or a list, so i have no idea what you are trying to do. You probably need to show more code.
JSG

Problem with ejb 3.0 entity beans with manyToMany relationship

Hello everyone!
I am using struts 1.2.9 and java ee 5 sdk update 2 for my enterprise application. Besides others i have these entity beans Targetgroup.java and City.java, (i would upload file but i do not know how:)
with manytomany relationship with join table.
when user updates Targetgroup, by clicking on web page with checkboxes and textfields, struts dispatch action calls following method stateless bean:
public void update(String firmId, String targetgroupId, String newGender, String newMinYearsOld, String newMaxYearsOld, String[] newCities) {
TargetgroupPK pkForUpdate = new TargetgroupPK(targetgroupId, firmId);
Targetgroup targetgroupForUpdate = find(pkForUpdate);
targetgroupForUpdate.setGender(newGender);
targetgroupForUpdate.setMinyearold(Integer.parseIn t(newMinYearsOld));
targetgroupForUpdate.setMaxyearold(Integer.parseIn t(newMaxYearsOld));
//pronalazenje gradva za koje je vezana ciljna grupa
Collection<City> newCitiesCollection = new ArrayList<City>();
for(int i = 0; i < newCities.length; i++){
String tmp_city_name = newCities;
City city_obj = cityFacade.find(tmp_city_name);
newCitiesCollection.add(city_obj);
targetgroupForUpdate.setCityidCollection(newCities Collection);
parameter newCities represents names of cities which user checked on his update page. When the page is showen to him some cities are allready check because they were connected with Targetgruoup when it was created (targetgroup).
this code throws following exception:
[#|2007-07-26T12:13:36.993+0200|SEVERE|sun-appserver-pe9.0|javax.enterprise.system.container.web|_Threa dID=16;_ThreadName=httpWorkerThread-8080-0;_RequestID=f79d9c50-86b0-4b6c-96ab-97956dfb39c1;|StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
javax.ejb.EJBException: Transaction aborted; nested exception is: javax.transaction.RollbackException: Transaction marked for rollback.
javax.transaction.RollbackException: Transaction marked for rollback.
at
.com.sun.enterprise.web.connector.grizzly.WorkerTh read.run(WorkerThread.java:75)
javax.ejb.EJBException: Transaction aborted; nested exception is: javax.transaction.RollbackException: Transaction marked for rollback.
at com.sun.ejb.containers.BaseContainer.completeNewTx (BaseContainer.java:3659)
at com.sun.ejb.containers.BaseContainer.postInvokeTx( BaseContainer.java:3431)
at com.sun.ejb.containers.BaseContainer.postInvoke(Ba seContainer.java:1247)
at com.sun.ejb.containers.EJBLocalObjectInvocationHan dler.invoke(EJBLocalObjectInvocationHandler.java:1 92)
at com.sun.ejb.containers.EJBLocalObjectInvocationHan dlerDelegate.invoke(EJBLocalObjectInvocationHandle rDelegate.java:71)
at $Proxy149.update(Unknown Source)
at audiotel.sms.actions.backoffice.TargetgroupDispatc hAction.updateOrDelete(TargetgroupDispatchAction.j ava:132)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.actions.DispatchAction.dispatchM ethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(D ispatchAction.java:187)
at org.apache.struts.action.RequestProcessor.processA ctionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
com.sun.enterprise.web.connector.grizzly.WorkerThr ead.run(WorkerThread.java:75)
|#]
exceprion is throwen ONLY when in parameter newCities are city names allready connected to Targetgroup. when NewCities contains names of
City objects which are not connected to Targetgroup it works fine, but it's of no use for me, because user must be able to add or remove certian cities from relaionship with Targetgroup. I think it's because there are rows in join table that contain primary keys of city and targetgroup which are connected so perisistence manager cann't write them again.
i thought it was going to figure it out by itself, and only update those rows.
Does anyone know what is the problem and solution?
Thanks! (forgive my spelling errors :)

solved the problem!
I moved code from sesion bean to struts action as follows:
CityFacadeLocal cityFacade = lookupCityFacade();
//prikupljanje novih podataka o ciljnoj grupi
String newGender = ctf.getGender();
String newMaxYears = ctf.getMaxyears();
String newMinYears = ctf.getMinyears();
String[] newSelectedCities = ctf.getSelectedCities();
//niz imena gradova se prevodi u kolekcju objekata City
Collection<City> newCitiesObjCollection = new Vector<City>();
for(int i = 0; i < newSelectedCities.length; i++){
String tmpCityName = newSelectedCities;
City tmpCityObj = cityFacade.find(tmpCityName);
newCitiesObjCollection.add(tmpCityObj);
//setovanje novih podataka
targetgroupForUD.setGender(newGender);
targetgroupForUD.setMinyearold(Integer.parseInt(newMinYears));
targetgroupForUD.setMaxyearold(Integer.parseInt(newMaxYears));
targetgroupForUD.setCityidCollection(newCitiesObjCollection);
//pozivanje update metdoe u session beany
targetgroupFacade.edit(targetgroupForUD);
//korisnik se vraca na stranu sa svim postojecim ciljnim grupama
forward = mapping.findForward("backend.targetgroups");
and now it works fine. I guess probelm was same transaction scope for Targetgroup and City entities. Now when they are separated it works.
Thanks!

How to reset the response status and response header

Dear Masters
Actually we are using NTLM Authentication process to get the system login id for our web application. The problem which I am getting is after running the NTLM Authentication Code I am not able to call the action class. It is telling 400 Server error bad request. I am using Struts Dispatch Action Class. In Dispatch Action I will be passing a name (eg. method) as a parameter in struts-config.xml file and using that parameter I will be calling the respective method in the Action class. The problem which I am facing is after running the authentication code I am not able to fire the action class. It is telling the error in the console as "parameter named method is not found". Actually in NTLM Authentication code they are setiing the response status to www-authenticate,NTLM. If I reset the response status back to the normal form I think i will be able to fire the action class. Please give me a suggestion on how to reset the response status and response header back to the normal form. Any solution to this is appreciated. Please respond your reply as soon as possible. Thanks in advance.
Regards
Ramesh

Hi,
I think, a servlet filter is what you need. Please check the following URLs on how to go about creating a filter.
http://dev2dev.bea.com/pub/a/2005/05/decorators.html
http://www.onjava.com/pub/a/onjava/2003/11/19/filters.html
http://www.onjava.com/pub/a/onjava/2004/03/03/filters.html?page=1
Cheers,
vidyut

Dispatch Action

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