Runtime.getRuntime.exec() not working with through Servlet

Hi ,
I want to open a IE from servlet,I am using a Runtime.getRuntime.exec to open the browser ,but my servlet is executing but IE is not opening...Here i am using TomcatServer...Is any settings to be Done in TomcatServer.
My Servlet code is
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
     String s1 = "C:/Program Files/Internet Explorer/IEXPLORE.EXE";
     String s2 = "http://192.168.0.149:8080/etk/etk3.htm";
     Runtime runtime = Runtime.getRuntime();
     runtime.exec(s1 + " " + s2);
i know it is contrary to the purpose servlets are meant for.but i am using for different purpose..
help me on this one...
Thanks in Advance

No, I am using the right path, I am sure. Also I tried giving the absolute path of the UserGuide.pdf. Still it cannot find. Please anyone try spawning an application from a different directory and lemme know your openion.
Regards,
Thomas.

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Runtime.getRuntime.exec() not working when Tomcat is made a windows Sevice

Hi,
I am working on a web application which launches a exe file on subitting the form. I am using Apache Tomcat 4.0.6 to run the web application. Initially Tomcat was not made a windows service on my machine and when I launch an exe it is launching without any problems. I used the following command to launch the exe file:
<code>
Process p = Runtime.getRuntime().exec("C:\\Program Files\\Mercury Interactive\\WinRunner\\arch\\wrun.exe" + strWROptions);
</code>
The above command launches WinRunner on the local machine.
without using tomcat if I just compile and run a test program with this command, the exe is launching perfectly. But, Once I made tomcat a windows service on my machine the exe is not launching.
Also, a process is being created in the windows task bar named wrun.exe once I submit the form but WinRunner is not lauching on the desktop.
Can any one please help and suggest me.
Thanks,
Ramesh

The version of Java I am using is 1.4.2. Even without
using the string array as you mentioned, the exe
(wrun.exe) is launched on my desktop if I don't run
Tomcat as a windows service. But the problem arises on
making it a service :-(
That is strange because going by the documentation what you have been using should never work. I can't test it though, I'm not on MSWindows at the moment..
Now, when I use this string array convention, I am
getting an error saying "The tool could not launch..
some error occured".
That's not a Java error message, it must come from WinRunner. This means that you have succesfully started WinRunner (great!) but something else is wrong; maybe the parameters you pass to it are incorrect.
How would you run it on the command line? Like this?wrun -t "D:\L5_QE\L5A\Initial" -create_text_report on -runThat line executes the wrun program and passes it five parameters, not three. The first parameter is "-t", the second "D:\L5_QE\L5A\Initial", the third "-create_text_report", the fourth "on", and the fifth "-run". The array of strings that corresponds to that line isString[] command = {"C:\\Program Files\\Mercury Interactive\\WinRunner\\arch\\wrun.exe",
                "-t", "D:\\L5_QE\\L5A\\Initial",
                "-create_text_report", "on",
                "-run"};

Why is Runtime.getRuntime().exec() not working in JSP?

Hi all,
I need to execute a command file from a JSP. I am using Tomcat 4.0.3.
Here is the code :
I just wanted to test if this will work, so tried to do run notepad.exe. But in my actual project, i need to run some other commands from a bat file or cmd file.
<%@ page import="java.util.*,java.io.*,java.net.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="tryexec" %>
//tryexec is a class which has the same java statements as in this jsp
<%
Runtime r = Runtime.getRuntime();
String s3 = "C:\\WINNT\\explorer.exe";
String s4 = "C:\\bin\\open.cmd"; //inside open.cmd file , i have "notepad.exe"
r.exec(s3);
r.exec(s4);
/*     tryexec c = new tryexec();
     c.execTo(); // doesn't work
%>
I have a html page , when i click a button there , it will call the above jsp , and this jsp will execute the command file.
If i run the above java statements using a simple java program, it works fine, it opens a notepad and explorer window. but if i do the same thing in jsp, why doesn't it work? Is there any security problem? no exception is shown . Is it a problem with tomcat?
I also tried to import the java class in jsp and call the function, but still didnt work.
Please let me know whats the problem, and how to execute command files from jsp.
Thanks
Priyha

It would work with Java coz u r working on the same machine as the java class file.
While in case of JSP, it is like connecting to a different machine (even if the server is running on the same machine). If you do something like "net send user message" command in JSP or something other executable (just to test), you would see it to work.
I hope you understand my point here.
Write back if you have any issues.
Regards
Aruneesh

Using Runtime.getRuntime().exec(DOS Program) with Windows 2000.

I am trying to spawn a DOS Program from within Java.
On Win95/98/ME, I use
Process     p = Runtime.getRuntime().exec("START /w command.com con /c myDOSProgram.exe");
This works on these platforms. On Win 2000, I use
Process     p = Runtime.getRuntime().exec("START /w cmd.exe con /c myDOSProgram.exe");
It does not work at all.
I have tried all combinations of using START, cmd.exe, con /c, etc.
I can spawn a Windows App using
Process     p = Runtime.getRuntime().exec("windows.exe");
And it works fine.
What does it take to spawn a DOS program from Java on the Windows 2000 op sys?

Hi. I recently wrote a java GUI that calls a DOS program with mixed success. Here's the code I used to make the call:String osName = System.getProperty("os.name" );
String[] cmd = new String[4];
if( osName.equals( "Windows 2000" ) || osName.equals( "Windows NT" ) )
     cmd[0] = "cmd.exe";
     cmd[1] = "/C" ;
     cmd[2] = "VBDoc.exe";
     cmd[3] = fileName;
else if( osName.equals( "Windows 95" ) || osName.equals( "Windows 98" ) )
     cmd[0] = "command.com" ;
     cmd[1] = "/C" ;
     cmd[2] = "VBDoc.exe";
     cmd[3] = fileName;
else
     System.out.println(osName);
Process proc = runtime.exec(cmd);Check out this article, it gives a good explanation of how to use the exec() call:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
Hope this helps!

Kill "runtime.getruntime().exec"-generated processes with control-c?

Hi there,
In my java program I create 2 processes with "runtime.getruntime().exec", but when I stop my java program pressing control-c these 2 processes remains running and I have to kill them using linux command "kill".
How can I program my code in order to kill these 2 processes when stopping my java program with control-c?
I tried next but it didn't work for me:
try {
final Process proc = Runtime.getRuntime().exec ( "java ControlCProblemDemo" );
Runtime.getRuntime().addShutdownHook(
new Thread(){
public void run(){
proc.destroy();
while ( true );
} catch( IOException ioe ) {
System.err.println( ioe );
}Thank you very much in advance.
Josué

so are you saying proc.destroy() does nothing?
are you sure it's getting executed?
is there an error?
too little info here

Runtime.getRuntime().exec problems running with applet

Hi,
I am running the command
Process prc = Runtime.getRuntime().exec("net config workstation");
InputStream in = prc.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
line = br.readLine();
When running from an application(/stand alone program) on Win-NT it runs fine. But when i include the same code in an Applet and try to run.
It doesnt return any thing. I see the DOS-prompt open and close and i can also see the required output generated on the DOS prompt, but the program doesnt return any results(null) in the InputStream.
I even tried to get the ErrorStream incase it is writing some error but it doesnt write anything.
I tried running some other commands like (cmd.exe /c set) which were able to run on both application as well as from the applet.
I have tried giving the "net config workstation" command in all flavors
     String[] cmd = new String[3];
     cmd[0] = "cmd.exe";
     cmd[1] = "/C";
     cmd[2] = "net config workstation";
And
     String[] cmd = new String[3];
     cmd[0] = "net.exe";
     cmd[1] = "config";
     cmd[2] = "workstation";
AND
     String[] cmd = new String[5];
     cmd[0] = "cmd.exe";
     cmd[1] = "/C";
     cmd[2] = "net.exe";
     cmd[3] = "config";
     cmd[4] = "workstation";
AND giing the full path as
C:\winnt\system32\net.exe config workstation
But still it doesnt work.
Can anybody please suggest what is the problem.Its Urgent.....
Well the purpose of this is to get users system properties like the Logon Domain , server name etc.... or else can anybody suggest a better way to obtain this information.....
Your reply will be highly appriciated...
Thanks in Advance......

Thanks for atleast replying.....
Sorry, i forgot to mention.... yes OfCourse, i am using an Signed Applet..... That how i was able to run the "set" command.....
I have made sure it is not sucha simple problem..... the thing is as i have mentioned i know that even "net config workstation" works..... cause i see the output on the DOS prompt,.... but this output is not returned to the Applet in the getInputStream()/getErrorStream().....
Can anybody please suggest a way to get this output..... OR is there some other way to get the machine's domain, server name etc info from the machine....?????
Thanks in Advance...!!

Unable to execute Runtime.getRuntime().exec(

Hello,
I am new to Java programming and trying to execute (OS is Linux) an external jar File with the command:
Runtime.getRuntime().exec("nohup java -jar SeismicAgents.jar &");It should start the SeismicAgents.jar and write the output to nohup.out.
This works perfectly if I just enter the command at the command line.
But upon starting it from within my program, the process seems to be started (I can see it when executin "ps aux"), but it is obviously not running as no input is written to nohup.out and the file which SeismicAgents.jar should generate is not generated.
I also tried the following code:
String cmd[] = {"nohup", "java", "-jar", "SeismicAgents.jar", "&"};
Runtime.getRuntime().exec(cmd);But I am experiencing the same problem here.
Executing something like
Runtime.getRuntime().exec(ls);works without problems...
Can anyone help?

Runtime.getRuntime().exec("nohup java -jar
SeismicAgents.jar &");Java does not interprete the '&' character. Neither does
nohup. You would have to prefix this with /bin/sh -c, put
the rest in quotes and, most importantly, redirect input
and output somewhere. Without redirection, it is the task
of your java program to feed the subprocess with input
and drain its stdout and stderr buffers.
Executing something like
Runtime.getRuntime().exec(ls);works without problems...It is hard to believe this. Either it should be "ls" or
ls is string variable containing the relevant string,
but even then I would be surprised if you see any
output on the command line. At least I don't get
anything with public class bla {
public static void main(String[] argv) throws Exception {
Runtime.getRuntime().exec("ls");
}If you don't want a "/bin/sh -c" hack, you may want to
try http://www.ebi.ac.uk/~kirsch/monq-doc/monq/stuff/Exec.html .
Harald.

How to use Runtime.getRuntime().exec() in JSP? is it works in JSP or not

Hi to all,
i want run a .exe file from JSP file. In java i am able do this, using Runtime.getRuntime().exec().
but same thing, when i trying with JSP it is not working?
plz let me is there any other ways to do it..

It depends, usually (ie in an J2EE container) you're not allowed to access files or the runtime environment, by definition. What do you wan't to achieve with the exe?
--olaf

Runtime.getRuntime().exec(cmd) not working

I have created binary scrip to parse file from one format to another format and the file parser is available on Linux path and working fine when calling from command prompt but while calling this program from jsf or any any java form bean it adds some special charaters with program and throws IOException as belows
calling command
String[] cmd={"delimiter",inputFile.toString(),outputFile.toString()};
Process p=Runtime.getRuntime().exec(cmd);
it gives following error.
java.io.IOException: delimiter@! : not found
while calling this from jaav main application working fine.
any suggestion would be appriciated.
Cheers,
dharmendra

Thanks.
I printed out whatever values are being passed and it is printing the right values on console and in log file and I also tried this command in stand alone application program an working fine. but when I call it from jsf form bean it adds ^@ at the end of first parameter and says ;
IOException : delimiter^@ : not found
i actually created the same copy as delimiter^@ and put it in same path directory with 777 mode.
and now its working fine. but I did not know the reason why it change the name of first argument.
Thanks,

Runtime.getRuntime().exec() does not work after JRE upgradation

I have upgraded JRE from 1.3.0_02 to 1.3.1_15. After this upgrade, Runtime.getRuntime().exec() has suddenly stopped working. If I downgrade to 1.3.0_02, it starts working again.
Please help.

It has definitely forked, and this is the child process. It says so. If it was the parent process it would just show Java code related to launching processes. That does not involve PKCS11. After the fork there are two identical processes with the same stack: the child process of the fork goes on to replace itself with the target command via Unix exec(), which it doesn't look like it is succeeding at. The parent process doesn't do much at all, probably just housekeeping and then a Unix wait() for Process.waitFor() to hook into.

Runtime.getRuntime().exec("cmd /c start file\\"+"My file.txt" ) Not work

Hello
i have a problem I use:
Runtime.getRuntime().exec("cmd /c start file\\"+"My file.txt");
to open "my file.txt" And I have error System Windows don't open file file\My becaus file My don't exist When I rename file to "Myfile.txt" and use:
Runtime.getRuntime().exec("cmd /c start file\\"+"Myfile.txt");
It's work great. My problem is when my file have space in name or other [ ], etc symbol. How fix this problem?
Thenks to help:)

Try using the verson where you specify the parameters in an array as this example shows:
http://forum.java.sun.com/thread.jspa?forumID=31&threadID=635363
Note: you may need to enclose the file name in quotes

Runtime.getRuntime().exec problem with linux script.

Hello,
I try to start a script under Linux RedHat 9. This script must just create another file.
I work with JDK 1.4.1_02b06.
If I use the next command
process = Runtime.getRuntime().exec("/temp/myScript.sh");
This is not working. I script file is existing otherwise I receive an error. I don't understand why the script is not executed!
I have check some other posts in this forum but I cannot find the solution.
Thanks in advance for your help.
Alain.

Try running it with sh: Runtime.getRuntime().exec("sh /temp/myScript.sh");

Runtime.getRuntime().exec works on windows failed on linux!

Hi,
I'm trying to execute a linux command from java 1.4.2 using Runtime.getRuntime().exec(). The linux command produces output and write to a file in my home dir. The command runs interactively in the shell and also run on windows.
The command is actually a mozilla pk12util. My java code to run this pk12util works on windows, but not on linux (fedora). When I print out the command I'm trying to run in java, I can run it interactively in bash shell.
Method below is where the problem seems to be:
public void writeCert() {
// Declaring variables
System.out.println("Entering writeCert method");
String command = null;
certFile = new File(credFileName);
// building the command for either Linux or Windows
if (System.getProperty("os.name").equals("Linux")) {
command = linuxPathPrefix + File.separator + "pk12util -o "
+ credFileName + " -n \"" + nickName + "\" -d "
+ dbDirectory + " -K " + slotpw + " -w " + slotpw + " -W "
+ pk12pw;
System.out.println("System type is linux.");
System.out.println("Command is: " + command);
if (System.getProperty("os.name").indexOf("Windows") != -1) {
// command = pk12utilLoc + File.separator + "pk12util -o
// "+credFileName+" -n "\"+nickname+\"" -d \""+dbDirectory+"\" -K
// "+pk12pw+" -w "+pk12pw+" -W "+pk12pw;
command = pk12utilLoc + File.separator + "pk12util.exe -o "
+ credFileName + " -n \"" + nickName + "\" -d "
+ dbDirectory + " -K " + slotpw + " -w " + slotpw + " -W "
+ pk12pw;
System.out.println("System type is windows.");
System.out.println("Command is: " + command);
// If the system is neither Linux or Windows, throw exception
if (command == null) {
System.out.println("command equals null");
try {
throw new Exception("Can't identify OS");
} catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
// Having built the command, running it with Runtime.exec
File f = new File(credFileName);
// setting up process, getting readers and writers
Process extraction = null;
BufferedOutputStream writeCred = null;
// executing command - note -o option does not create output
// file, or write anything to it, for Linux
try {
extraction = Runtime.getRuntime().exec(command);
} catch (IOException e) {
System.out.println(e.getMessage());
e.printStackTrace();
// Dealing with the the output of the command; think -o
// option in command should just write the credential but dealing with output anyway
BufferedWriter CredentialOut = null;
OutputStream line;
try {
CredentialOut = new BufferedWriter (
new OutputStreamWriter(
new FileOutputStream(credFileName)));
catch (FileNotFoundException e) {
System.out.println(e.getMessage());
e.printStackTrace();
// writing out the output; currently having problems because I am trying to run
}

My error is due to the nickname "-n <nickname" parameter error. I think the problem is having a double quotes around my nickname, but if I take out the double quotes around my nickname "Jana Test's ID" won't work either because there are spaces between the String. Error below:
Command is: /usr/bin/pk12util -o jtest.p12 -n "Jana Test's Development ID" -d /home/jnguyen/.mozilla/firefox/zdpsq44v.default -K test123 -w test123 -W test123
Read from standard outputStreamjava.io.PrintStream@19821f
Read from error stream: "pk12util: find user certs from nickname failed: security library: bad database."
null
java.lang.NullPointerException
at ExtractCert.writeCert(ExtractCert.java:260)
at ExtractCert.main(ExtractCert.java:302)
Code is:
private String nickName = null;
private void setNickname(String nicknameIn) {
nickName = nicknameIn;
// building the command for either Linux or Windows
if (System.getProperty("os.name").equals("Linux")) {
command = linuxPathPrefix + File.separator + "pk12util -o " + credFileName + " -n \"" + nickName + "\" -d " + dbDirectory + " -K " + slotpw + " -w " + slotpw + " -W " + pk12pw;
System.out.println("System type is linux.");
System.out.println("Command is: " + command);
extraction = Runtime.getRuntime().exec(command);
BufferedReader br = new BufferedReader(
new
InputStreamReader(extraction.getErrorStream()));
PrintStream p = new PrintStream(extraction.getOutputStream());
System.out.println("Read from standard outputStream" + p);

Problems with Runtime.getRuntime().exec in Windows 2000

Hello,
I have a batch file that I want to run from my java application. My code is the following:
try {
Runtime.getRuntime().exec("cmd.exe /c C:\\temp\\shortcut.bat");
} catch (Exception e) {
System.out.println(e.getMessage());
}I was developing on windows XP and it worked just fine. But then I tested it on windows 2000 and it didn't work. The batch file is okay, because if I run the batch file myself it works just fine, even from the command line. I get no errors what so ever, it just doesn't do anything...
Can somebody help me with this?
thx in advance

thank you all so much
I figured it out... It was a combination of two things that went wrong.
First one: in my batch file I had:
cd C:\tempwhich worsk fine in XP, but in it doesn't in 2000. In 2000 it has to be:
C:
cd \temp But just changing that wasn't enough, I also needed the "start"
Now it works just fine on 2000, hopefully it'll still work on xp as well.
THX!

Runtime.getRuntime().exec() does not return

Hello,
I am running into a case where the call to Runtime.getRuntime.exec(command) does not return. The scenario is that the main thread spawns another thread which calls the Runtime.exec(). Since the call does not return, both threads seems to be hung. The jstack output from the main thread shows
----------------- t@2 -----------------
0xfeedab45 ___lwp_cond_wait + 0x15
0xfeb4030d void os::PlatformEvent::park() + 0xa9
0xfebadd48 void ObjectMonitor::wait(long long,bool,Thread*) + 0x26c
0xfe770287 void ObjectSynchronizer::wait(Handle,long long,Thread*) + 0xef
0xfe76ffbb JVM_MonitorWait + 0x20f
0xfb20a032 * java.lang.Object.wait(long) bci:0 (Interpreted frame)
0xfb20308d * java.lang.Thread.join(long) bci:38 line:1143 (Interpreted frame)
0xfb20308d * java.lang.Thread.join() bci:2 line:1196 (Interpreted frame)
0xfb20308d * DataLoader.checkThreadGroup() bci:92 line:316 (Interpreted frame)
0xfb202f27 * DataLoader.checkTables(int) bci:1 line:336 (Interpreted frame)
0xfb202f69 * DataLoader.runLoad(int, java.lang.String, java.lang.String, java.lang.String, com.sabre.fltsked.apm.util.FSIOHelper)
... more below ....
So it is waiting for the spawned thread on a join()
And the jstack dump for the thread that called exec() is
----------------- t@70 -----------------
0xfeed7409 __lwp_park + 0x19
0xfeed1be7 cond_wait_queue + 0x5e
0xfeed1f64 cond_wait_common + 0x1db
0xfeed20d2 condwait + 0x7b
0xfeed20fd cond_wait + 0x21
0xfeed2136 pthread_cond_wait + 0x1b
0x9741082a soft_delete_object_cleanup + 0x57
0x97410906 soft_delete_object + 0x5b
0x97410953 soft_delete_all_objects_in_session + 0x2e
0x97407b7a soft_delete_session + 0xec
0x97407860 soft_delete_all_sessions + 0x3c
0x97402525 finalize_common + 0x66
0x974026ae softtoken_fini + 0x34
0x974355f9 _fini + 0x21
0xfefdd49a remove_hdl + 0x766
0xfefd8be9 dlclose_core + 0xb1
0xfefd8c1d dlclose_intn + 0x21
0xfefd8c96 dlclose_check + 0x2a
0xfefd8d00 dlclose + 0x38
0x97480aeb pkcs11_slottable_delete + 0xb1
0x9747c691 finalize_common + 0xe2
0x9747c6e0 pkcs11_fini + 0x3e
0x9747c3bf pkcs11_fork_child + 0x73
0xfee628b8 postforkchild_handler + 0x2f
0xfeeca9ec fork + 0x12e
0xfe338029 Java_java_lang_UNIXProcess_forkAndExec + 0x395
0xfb20a032 * java.lang.UNIXProcess.forkAndExec(byte[], byte[], int, byte[], int, byte[], boolean, java.io.FileDescriptor, java.io.FileDescriptor, java.io.FileDescriptor) bci
:0 (Interpreted frame)
0xfb202f69 * java.lang.UNIXProcess.<init>(byte[], byte[], int, byte[], int, byte[], boolean) bci:62 line:53 (Interpreted frame)
0xfb20308d * java.lang.ProcessImpl.start(java.lang.String[], java.util.Map, java.lang.String, boolean) bci:182 line:65 (Interpreted frame)
0xfb202f27 * java.lang.ProcessBuilder.start() bci:112 line:452 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String[], java.lang.String[], java.io.File) bci:16 line:593 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String, java.lang.String[], java.io.File) bci:69 line:431 (Interpreted frame)
0xfb202f27 * java.lang.Runtime.exec(java.lang.String) bci:4 line:328 (Interpreted frame)
0xfb202f27 *SQLLoad(java.lang.StringBuffer) bci:181 line:51 (Interpreted frame)
0xfb202e61 *FSLoadThread.run() bci:84 line:54 (Interpreted frame)
The command I am trying to exec is "sqlldr" and I do have it in my PATH variable. Why is that the call to exec does not return? Any ideas?
This is on jdk1.6.0_17
Thanks,
Bijoy.

It has definitely forked, and this is the child process. It says so. If it was the parent process it would just show Java code related to launching processes. That does not involve PKCS11. After the fork there are two identical processes with the same stack: the child process of the fork goes on to replace itself with the target command via Unix exec(), which it doesn't look like it is succeeding at. The parent process doesn't do much at all, probably just housekeeping and then a Unix wait() for Process.waitFor() to hook into.

Runtime.getRuntime.exec() not working with through Servlet

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