Communicating with Applet with JSP

Hi,
I am developing a tool that uses an applet to display information as a specialized spider table. I have used parameters to input information into the applet and this is working fine!
I want to know how the applet can then output information based on the users choice inside the applet.
E.g. The users can select values on spider diagram and I want to output these values to a place where I can access them (i.e. session or application level attributes for the JSP).
Does anybody know how to "output" from the Applet in this manner or any other way?
Many thanks in advance!
GJ

Hey guys,
I think I got the answer. I can use the java.net.URLConnection and java.net.URL classes to open a standard HTTP connection to the web server. The server then passes this information to the servlet in the normal way.
I'll let you know how I get on!
GJ

Similar Messages

Communicating with Jsp

hi!
Wat are all the different ways in which servlet used to communicate with JSP?
Thanx

Servlets and JSP pages don't communicate with each other like java objects do/can. JSP's are Servlets, and they are both stateless. So really there is no communication between them. They can share the same data, and they can do forwarding and such I guess, but they aren't alive in memory hanging out, so you can't pass them info or call functions on them. I think I'm just not clear on what your issues is.
you might need to elaborate on the question/problem you have

How to deploy a JSP with jsp:plugin with applet type?

Hi,
I am a new comer for JSP and when to try to a simple JSP with plugin for applet. Following is part of my JSP script:
<jsp:plugin type="applet" code="DigitalClock" align="center" height="25" width="300"
>
 <jsp:params>
 <jsp:param name="language" value="<%=request.getLocale().getLanguage()%>" />
 <jsp:param name="country" value="<%=request.getLocale().getCountry()%>" />
 <jsp:param name="bgcolor" value="FFFFFF" />
 <jsp:param name="fgcolor" value="CC0066" />
 </jsp:params>
 <jsp:fallback>
 Unable to start plugin.
 </jsp:fallback>
</jsp:plugin>
===========
And Java plugin tell me that can't find DigitalClock class. I want to ask how to deply this JSP using deploytool.
Thanks,
Wise

Hi
It should be in such a way,
The Jsp:param is similar to PARAM used in Applet.
<jsp:plugin type="applet"
code="MyApplet.class"
width="475" height="350"
<jsp:params>
<jsp:param name = "PARAM1" value="VALUE1" />
</jsp:params>
</jsp:plugin>
jsp:fallback Element
It provides alternate text to browsers that do not Support OBJECT or EMBED. You can use this element in the same way as you provide alternate text in your applet.
<jsp:fallback>
 Error: This example requires java 
</jsp:fallback>
</jsp:plugin>
I hope this will help you.
Thanks
Bakrudeen
Technical Support Engineer
Sun MicroSystems Inc, India

Re: Including Applet in JSP with Dynamic input| Help needed

Hi All,
We are into a project in Oracle Portal Server where in we want to embed a result of a standalone application in Portal page.
We can do that once we can embed the result of the standalone application which generates applet based on the input it gets from the current application's database.
If it was static we could have used jsp:plugin but, it fails in our case!
We are clueless as to how to embed an applet which will pick up the data dynamically.
Can anyone of you help me in this regard?
Thanks & Regards
Arthi

Hi Arthi,
I think this might help you to get an idea why jsp:plugin tag does not allow for dynamically called applets.
<jsp:plugin type=applet height="100%" width="100%"
archive="myjarfile.jar,myotherjar.jar"
codebase="/applets"
code="com.foo.MyApplet" >
<jsp:params>
<jsp:param name="enableDebug" value="true" />
</jsp:params>
<jsp:fallback>
Your browser does not support applets.
</jsp:fallback>
</jsp:plugin>
The plugin example illustrates a <html> uniform way of embedding applets in a web page. Before the advent of the <OBJECT> tag, there was no common way of embedding applets. This tag is poorly designed and hopefully future specs will allow for dynamic attributes (height="${param.height}", code="${chart}", etc) and dynamic parameters. Currently, the jsp:plugin tag does not allow for dynamically called applets. For example, if you have a charting applet that requires the data points to be passed in as parameters, you can't use jsp:params unless the number of data points are constant. You can't, for example, loop through a ResultSet to create the jsp:param tags. You have to hand code each jsp:param tag. Each of those jsp:param tags however can have a dynamic name and a dynamic value.
I think you can get better information if you look in to the below link
http://pdf.coreservlets.com/CSAJSP-Chapter12.pdf
Many Thanks,
Ramesh.

Communicating with Servlets....

hi!
Wat are all the different ways in which the JSP used to communicate with Servlet?
Thanx,
Rgds,
Sasi

Jsp page communication with Servlets....
web.xml -- Servlets loaded during application startup
struts config -- Servlet mapping (w.r.t struts).
and u can import servlets in jsp and can use it... there are so many possible ways of using servlets coz jsp pages inturn convert into servlets and got executed.....

Path Pronlem with jsp:plugin 's codebase

I am unable to call my JApplet Class with <jsp:plugin> tag in my JSP Page. I have tried almost every combination for codebase (absolute and relative paths ) but still there is an Error ClassNotFound .
Please tell me the right way to call the Applet in JSP.
along with a small example ...
Jsp and the Class File exists in Different directories in My Web Project.

Well, then I would just put in the object/embed tags yourself. You can get whatever the plugin tag writes by just using the tag once with static values and view the source in the browser and copy it out, then replace whatever values with scriptlets (or other taglib tags) to fill in the correct values.

How to generate the submenu with JSP??

I want to show a submenu when the mouse pointer upon a specific link or area. can i do that with JSP?

I agree with whizkeys, you cannot do that with javacode in a JSP, you will need to use javascript (unless you want to try it with an applet, but, then you would have other issues and it would be a pain in the balls).

Communication with other domain

Hi,
An internal application (.exe developed in Delphi) at a
clients server (
no webserver) can communicate ( JSON protocol) with other
applications, also web based.
While testing the AS2 / AS3 classes ( from
http://www.json.org ) in the Flash
IDE (ctrl-enter) their was no problem. I made a connection on a
static IP-adres with open port and could send/recieve json-objects.
So far so good.
When publishing it for a html page, the trouble began. The
known security problem.
Is there a solution?
We don't know where to put the crossdomain.xml because there
is no root! There is just an application listening to an open port
on a static IP adres.
Just a single executable listening to an open port if a
request is comming in so it can send an answer.
Is there a solution?
How does the flash player finds out if a crossdomain.xml is
avalable?
Does it send a request also? Is it ok to generate a
crossdomain.xml on the fly on that request?
Help us please!

I think I understood the following:
- Cards have a special applet called Card Manager (or Security Domain) for example to load and delete other applets
- Communication with the Card Manager goes over a secure channel with specific keysThat is correct
Questions:
- Are these keys 'open' so they can be used for every card of the same type?Development cards generally have know keys that can be used. When you go into production, your cards will have a unique (each card in fact will have its own key)
- Are these keys set by the factory and maybe reset by a distributor?Both. The card issue can also set the keys before sending the card out. Check the GlobalPlatform Key Management System specification from the GP website for more details on key management.
WrappedCommand --> 80 CA006600
Response <-- 664C734A0607...(I'll post all bytes if necessary)...9000Can you provide the full response from the card?
Can I somehow check if my Card is already blocked (too much failed attempts?) without waisting another attempt?No. If you have exceeded the tries your next INIT UPDATE will fail. You should have 10 per card with the JCOP cards from memory. Some Gemalto cards lock after 5.
Cheers,
Shane

SSL communication with IBM Tivoli 5.2

Hi,
I have downloaded the free version of the IBM Tivoli 5.22 directory server. Its installed great and I can connect and query the sample data using port 389.
I am working on enabling SSL communication with the same.
I referred to
http://publib.boulder.ibm.com/infocenter/tivihelp/v2r1/index.jsp?topic=/com.ibm.itame.doc/am60_install33.html
Followed the steps provided to enable SSL communication, it gave me errors saying that the password for the key database file was incorrect.
Has anyone try to connect to the IBM Tivoli Directory server via SSL, is there a way to do it in the same way as we set up ssl with Active Directory.
Any help in this regard would be great,
Regards
Zoharat

Hey ,
I got SSL enalbed on the Tivoli server. I follwed the instructions availabe on the IBM site to set up the GSKIT and create the key database , the certificates and also the setting up the server to use them. I used self signed certificates.
For setting up the server I used the command line utilities.
The ldapsearch command always failed it kept saying bad password. So I took the certificate file that created added it to the cacerts of the java client and then communicated with the server on port 636.
It worked great.
Regards
Zoharat

Sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loop

sir i have given lot of effort but i am not able to solve my problem either with notifiers or with occurence fn,probably i do not know how to use these synchronisation tools.

sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loopHi Sam,
I want to pass along a couple of tips that will get you more and better response on this list.
1) There is an un-written rule that says more "stars" is better than just one star. Giving a one star rating will probably eliminate that responder from individuals that are willing to anser your question.
2) If someone gives you an answer that meets your needs, reply to that answer and say that it worked.
3) If someone suggests that you look at an example, DO IT! LV comes with a wonderful set of examples that demonstate almost all of the core functionality of LV. Familiarity with all of the LV examples will get you through about 80% of the Certified LabVIEW Developer exam.
4) If you have a question first search the examples for something tha
t may help you. If you can not find an example that is exactly what you want, find one that is close and post a question along the lines of "I want to do something similar to example X, how can I modify it to do Y".
5) Some of the greatest LabVIEW minds offer there services and advice for free on this exchange. If you treat them good, they can get you through almost every challenge that can be encountered in LV.
6) If English is not your native language, post your question in the language you favor. There is probably someone around that can help. "We're big, we're bad, we're international!"
Trying to help,
Welcome to the forum!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

I get an error message when trying to install windows 7 on my macbook pro. The message says "windows has encountered a problem communicating with a device connected to your computer. I don't have anything connected to my computer. How do I fix this?

I'm trying to install windows 7 on my macbook pro. I went through the process of bootcamp telling it to install windows 7. Once the windows boot manager started an error message came up. The error message says " windows has encountered a problem communicating with a device connected to your computer. I don't have a usb connected to my computer. I am using windows 7 professional install disc. I can't figure out what i am doing wrong. The same message keeps coming up over and over. Am I doing something wrong or is it something else?

Well, shucks, i just spent almost 30 minutes trying to find your model user guide to explain it better, I guess they never got around to making it.....
I would just borrow another Windows disk and try installing it again and if it does it again then you might take it to an Apple Store and see if one of the "Genius' " can figure it out.
Make sure your internet is enabled and click on your blank desktop and at the top of your screen is a Help menu option, enter PRAM and it should give you a list of things relating to Pram. It may take a few seconds to list anything as it has to connect to Apples severs first. It should list the things you may have to fill back in when your done.
"P-ram" stores some common information that is used in the background, your date, time, startup disk, etc, that you don't have to re-fill when you restart, it's a little different for each computer.

SQL query with JSP and WML-parameters

Hey,
Could you help me?
I'm trying to do the following. WML deck card 1 send parameter to same WML deck's card help. I try to read the parameter with JSP in card help by putting the parameter to SQL query, but it doesn't work. I can read the parameter with WML in card help. I can also print the value of the parameter with JSP if I generate WML with JSP.
/*parameter sending from card 1 to card help*/
out.println("<go href='#helpcard'>");
out.println("<setvar name='valittukurssi' value='$(valittukurssi)'/>");
/*parameter read with WML in card help */
Valitse kurssi.
$valittukurssi
/'parameter read with JSP by generating WML with JSP*/
out.println("$valittukurssi");
/* SQL query with JSP */
ResultSet uudettulokset = uusilause.executeQuery("select * from kurssi where lyhenne='$valittukurssi'");
Thanks,
Rampe

You're problem is easy to fix. You're confusing WML variables with JSP variables. See below:
>
/*parameter sending from card 1 to card help*/
out.println("<go href='#helpcard'>");
out.println("<setvar name='valittukurssi'
value='$(valittukurssi)'/>");
Above you set a var that will work on the phone, not in JSP.
/*parameter read with WML in card help */
Valitse kurssi.
$valittukurssi
Yes the above does display the parameter, because it is a client side WML var, but you cannot use this variable in the JSP code (that's why your SWL fails).
/'parameter read with JSP by generating WML with
JSP*/
out.println("$valittukurssi");Here's you're problem, the above line is EXACTLY the same as the one before it. When the container parses through this JSP code it translates the above line to:
$valittukurssi on the WML page and the CLIENT uses it's local variable to display it.
What you need and want is to have a variable that can be used in JSP code and output to your WML page. Here's how it's done:
out.println("<go href='#helpcard'>");
String some_name = "valittukurssi";
out.println("<setvar name='"+some_name+"'
value='$("+some_name+")'/>");
//note that you may have to escape the ( and ) with a \
//so we displayed the variable above into the WML page, now we can use it in the SQL query:
/* SQL query with JSP */
ResultSet uudettulokset =
uusilause.executeQuery("select * from kurssi where
lyhenne='"+some_name+"'");//the end of the command is: " ' " ) ;
Frank Krul
Got Node?

"The software required for communicating with the iPod is not installed..."

I realize my explanation of my problem is long-winded, so if you want a shortened version, here it is:
I've followed all the instructions trying nearly everything, and no matter what I do, iTunes gives me the error saying: "The software required for communicating with the iPod is not installed correctly. Please reinstall iTunes to install the iPod's software." My G5 iPod (60GB) works on two other computers (both without any music on them), so I assume there something wrong with my computer and not the iPod itself.
Now for the long-winded story of the last eight hours of my life...
I just got the Generation-5 iPod Video (60GB) a today and I'm having problems already. I followed the instructions and installed the iPod software and then plugged in my iPod (iTunes has been on my computer for a while now). I was expecting iTunes to open after plugging in the iPod, but my device manager only detected and installed "a new device". I manually opened iTunes and got an error saying: "The software required for communicating with the iPod is not installed correctly. Please reinstall iTunes to install the iPod's software."
After re-installing the iPod software and iTunes, and restarting my computer countless times, I came looking for help here. I found this page, which seemed to outline my problem exactly. My computer recognizes the iPod as a drive, but iTunes won't have anything to do with it. I have all the symptoms outlined in the heading, so I hoped to solve my problem there. I followed the instructions step-by-step, and after the final restart, I open iTunes to get the same exact error message.
I decided to determine whether there was a problem with my iPod or if it was my computer. I plugged my iPod into my uncles's powerbook, and got to the point where I can name and configure my iPod. I expected it to work flawlessly on a Mac (which it did) but there is no way for me to continue using a Mac (after tomorrow) for my iPod. This formatted the iPod for a Mac, so I went to another (different from the original) Windows computer, clean of any iTunes and iPod software, and followed the instructions exactly as they're supposed to be followed. After the installations, I plugged in my iPod, and although iTunes didn't open, I was able to format back to Windows and name my iPod (a step in the right direction). I should note that my (anti-iPod) computer is a Windows XP Pro, and the working one is Windows XP Home Edition. This was all well and good, until I remembered there was no music on this computer. So my iPod is completely working there, but there isn't anything I can do with it.
Next, I came back here and browsed around the discussion boards, hoping to find somebody with a similar problem to mine. There seems to be alot of errors concerning iTunes not recognizing the iPod, but none of the solutions I tried worked for me, including changing the drive letter. I get the "iPod Service Error" while trying to restore to factory settings through iPod updater.
Of course, I could transfer all 32GB of music from one computer to another, but the second (working) computer isn't mine and I won't have access to it in a couple months. It would be most convenient if I could get my iPod working on my own computer. Any help would be appreciated, especially from somebody who has solved this problem or know how to solve this problem.
P.S.
Here are some other minor details that my be important, but I didn't feel they were worth including.
- My brother has his iPod mini set up on my computer, under a different user login. He gets the same error once in a while, but re-installing iTunes always solves the problem for him. I had him try solving my problem his way, but nothing worked for him either.
- My computer is an AMD Athlon 64 Processor 3200+, 512MB RAM with Windows XP Pro SP2 installed. My internal hard drive is partitioned, using the letters C, D and H (C being my system files, D used for recovery files and H for my applications and games). My E drive is used as a DVD/CD-ROM Drive, and drives F and G are reserved for virtual drives (none have been running during this entire ordeal). My external hard drive uses the letter I, and I manually set my iPod to use the letter J (I've never used 'J' for anything else before).
- Yes, I have downloaded and installed the latest versions of iTunes and the iPod software.
- I'm assuming there is a problem with my computer and not my iPod, since it worked on both other computers I tried. I'm hoping it's as simple as changing a registry file or cleaning out (yet another) temp directory.

Solution to "Software required for communicating with the iPod is not installed"!
I battled this same problem for about 5 hours. Going through re-installations, the "5 R's", all these discussion boards. Nothing worked.
The problem is that iPodService was repeatedly crashing after minute or so. You can verify this by hitting Ctrl-Alt-Delete and noting that iPodService is missing from the process list (sort by image name), or by right-clicking on My Computer and selecting "Manage", then going to Services and checking out the IPodService service - if it gives you the option to "Start", then it's not running.
Here is what worked.
1. De-install iTunes and iPod (if you have the updater installed) completely by going to Start --> Control Panel --> Add/Remove Programs. Also delete the C:\Program Files\iTunes and c:\Progam Files\iPod\bin directories. (Don't worry, this doesn't affect your saved music files.)
2. Log in as an Administrator
3. Go into the registry (note this is dangerous - you should be careful) and remove the iPod entries that the uninstaller misses.
3.1 Go to Start menu --> Run.
3.2 Type in "regedit".
3.3 Go to HKEYCLASSESROOT --> IPodService.iPodManager.
There are two keys here, iPodManager and iPodManager.1. In my case, I did not have permission to view either of these. I think this is the root cause of the problem. I think the installer can't properly update these because it doesn't have permission. So you need to change the permissions:
3.4 Right-click on IPodService.IPodManager
3.4.1 Select "Permissions..." A warning will appear saying you don't have permission, but that you can change permissions.
3.4.2 On the window that launches, click on "Advanced..."
3.4.3 Click on the "Owner" tab.
3.4.4 Select a valid account (the one you're logged in under) under "Change Owner To".
3.4.5 Hit "OK".
3.4.6 Back on the main Permissions window, hit Add and add the same account as a valid user.
3.4.6.1 Where it says "Enter the object names to select", type in the account name, e.g. "Smith".
3.4.7 Click on the "Allow" checkboxes for "Full Control" and "Read".
3.4.8 Hit "OK".
3.5 Repeat procedure for the "iPodManager.1" key.
3.6 Now right-click and delete both of these keys.
I think that's all that's required, but I also searched through the registry and deleted the following keys.
4. Other keys I deleted:
4.1 HKEYCLASSESROOT --> IPodManager.IPodManagerUI.1
4.2 HKEYLOCALMACHINE --> SOFTWARE --> Apple Computer Inc. --> iPod
I think that's all I deleted, but I'm not positive. I seached for instances of "ipod" using the Find... and Find Next functions under the Edit menu.
5. Exit out of the registry editor.
6. Re-install iTunes. I re-installed iTunes and reconnected the iPod, and everything worked.
I want to repeat that editing the registry can completely mess up your computer if you modify the wrong things, so only do this if you're comfortable, and be extremely careful.
Hopefully this helps!
Apple support people: assuming this works, please add it to your solutions page, and feel free to reimburse me for spending half of Christmas figuring this out.
Mark

I get an error message when trying to sign into the support community with another Apple id. On the pick a username screen I get "an account utilizing this address already exists...." despite trying a few usernames. Anyone know how I can resolve this?

I get an error message when trying to sign into the support community with another Apple id. On the <pick a username> screen I get "an account utilizing this address already exists.Only one account per email address is allowed on the Apple Support Communities" despite trying a few usernames. Anyone know how I can resolve this?

This problem has been driving me demented. The instructions that Ivan gives have partially worked for me. By following his link
"How to find out if you have multiple Apple IDs" I was able to identify that yes I did have two apple accounts using the same e mail address. One was very old that I used to use for the forum boards and one is my much more recent ID that I use for everything these days. So I changed the e mail address for the old account which is associated with these discussion boards and that's the account that I am now posting this from. However even though the two accounts now have different e mail addresses when I try to log onto the boards with my more recent main apple ID I still get all the same errors as described at the start of this thread by rodgers_j. And of course that's the one I want to use so that I only have one itunes account for everything.
So if anyone has any more hints I'd be very grateful.

There is a problem communicating with the printer.

I have a Lexmark Interpret S405. I am using a MBP laptop with WiFi, running 10.5.8. I have a cabled (non-wifi) Linsys router. I am using an Airport Express.
I was finally able to get the WiFi light on the Lexmark to be static green after reinstalling the Lexmark WiFi setup and reconfiguring my Airport settings so that both the computer and printer see each other.
In fact, I even updated the driver from Lexmark's Web site last night and I watched the WiFi light on the printer blink green indicating that the installation of the driver update was being communicated to the printer.
However, when I print, it opens the print window and says first "Looking for S300-S400", then it says "Printer is now online". Then after about 10 seconds, I get this error: "There is a problem communicating with the printer. Make sure the printer is powered on and connected to the computer. Delete or hold the job and try again."
I've exhausted Lexmark's technical databases and couldn't find the answer here.
I've read that one possible solution was to delete all the printers from the "Print & Fax" system preferences window and re-add. That didn't work.
Lexmark says for: The printer communicating on a network; however, the printer is not responsive. Possible causes could be:
1. Your printer is associated with a network, router, or access point, but it is not your network.
2. A software process is blocked by a system security firewall preventing network communication.
3. You are logged into Virtual Private Network (VPN).
4. You are connected to a network but have decided to switch to a USB connection.
I don't have a VPN and have removed the USB cable, then restarted both printer and computer, and deleted printers in Sys Prefs, restarted, and still no solution.
I can print directly via USB cable, but want to print wirelessly.
Lexmark also says to enter my PIN (which I have pulled out from the print menu screen on the printer) in the System. That tells me a lot...
Network settings on the print window on the printer also tell me Signal strength is 5 (excellent) and that I am on the network my airport is on.
Message was edited by: Macman17

I bet this is too late but...
Are you trying to print through the airport express wirelessly or the built in wireless of the lexmark? If you want to use the airport express, there is no need to mess with the wireless printing on the lexmark at all. The airport express will be easy to set up, all the wireless setups through the printers are a pain.

Create a new directory in server with JSP

Hi,
How can I create a directory in server with JSP.
File dir = new File("a");
dir.mkdir();
does not work. what do I do?
best regards,

Hi
Check the following things.
1. What is the path where you are creating the directory.
2. Do you permissions to create file in that directory.
3. do a delete on that filename if that exists just to be sure. isdeleted = filedir.delete(). Check the boolean flag isdeleted too.
Thanx and Regards
Aruneesh

Communicating with Applet with JSP

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