public static void main(String[] args)
{
String command = "/usr/bin/xulrunner -app /home/user/myapp/app.ini";
System.out.print(command);
try {
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(command);
BufferedReader input = new BufferedReader(
new InputStreamReader(pr.getInputStream()));
String line = null;
while ((line = input.readLine()) != null) {
System.out.println("\n"+line);
}
int exitVal = pr.waitFor();
System.out.println("\nExited with error code " + exitVal);
} catch (Exception e) {
System.out.println(e.toString());
e.printStackTrace();
}
}
This code prints:
"Exited with error code 2"
When I run "/usr/bin/xulrunner -app /home/user/myapp/app.ini" in Terminal it works ok.
It prints "Hello world"
It seems that your code to launch xulrunner is correct. You'll have to figure out why xulrunner is return 2 as an error code.
Related
I need to run a shell script in java. The script accepts two parameters as an argument 1st is the name and the second is the directory path.
I'm using Windows as the operating system on my local machine.
Below is the code I'm trying to run:
ProcessBuilder processBuilder = new ProcessBuilder("D:\\temp\\script\\create_script.sh", name, sourceDir);
try {
Process process = processBuilder.start();
StringBuilder output = new StringBuilder();
BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println("Success!");
System.out.println(output);
System.exit(0);
} else {
//abnormal...
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
The above code gives below error:
2021-05-12 22:08:47.383 INFO 10600 --- [nio-8090-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
java.io.IOException: Cannot run program "D:\temp\script\create_script.sh": CreateProcess error=193, %1 is not a valid Win32 application
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1128)
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1071)
Can someone please help me with the missing part?
Appreciate all your help! Thanks in advance!
If you are using Windows, the problem might be that you are trying to run a Linux shell script (.sh), hence Windows doesn't really appreciate that.
You can either translate Linux shell script into Windows bash script or try to run your program again on a Linux OS, which I would recommend the latter.
The below code worked for me!
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command("cmd.exe", "/c", "D:\\temp\\script\\create_script.sh);
try {
Process process = processBuilder.start();
StringBuilder output = new StringBuilder();
BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println("Success!");
System.out.println(output);
System.exit(0);
} else {
//abnormal...
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
I have code that runs batch files in windows perfectly fine. (hey.bat just prints something simple)
public static void main(String[] args) {
static String dir1 = "C:\\Users\\Name\\Desktop\\hey.bat";
ProcessBuilder processBuilder = new ProcessBuilder(dir1);
try {
Process process = processBuilder.start();
StringBuilder output = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println(output);
System.exit(0);
} else {
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
However, when I call a different batch file named shutdown.bat, one that is supposed to shutdown Tomcat, it gives the error
The CATALINA_HOME environment variable is not defined correctly. This
environment variable is needed to run this program
When I double click shutdown.bat it works perfectly fine, so why would it give an error when being run through java? Shouldn't all the dependencies be bundled into that batch file? Thanks
I want to call a python program with arguments from java. But my output is a blank. The code is here.
Python code is here:
import sys
print(sys.argv[1])
And the java code is here:
public class PrintNumber{
public static void main(String[] args){
Process proc;
try {
proc = Runtime.getRuntime().exec("python ../pythonProgram/pythonProgram/PrintN.py 30");
BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
proc.waitFor();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
I want to output 30, could somebody tell me where is the mistake?
You can try it out:
String command = "python /c start python ../pythonProgram/pythonProgram/PrintN.py";
int param = 30;
proc = Runtime.getRuntime().exec(command + param);
Reference: Run Python script by Java
i am running jdk on windows 7. I try to run a external software (pocketsphinx_continous.exe) within my java application. The software runs permanently (pocketsphinx_continous.exe) and prints some output to the console which i like to read by my java application.
if i run "pocketsphinx_continous.exe" with some params from the commandline all works well and i see the output from the software. After killing the process, i try to run it within my java application. But java print no output to the console.
This is my code:
public void start(){
try {
Runtime rt = Runtime.getRuntime();
String[] commands = {"D:/cmusphinx/pocketsphinx/bin/Release/x64/pocketsphinx_continuous.exe", "-hmm", "d:/cmusphinx/pocketsphinx/model/en-us/en-us", "-lm", "d:/cmusphinx/pocketsphinx/model/en-us/en-us.lm.bin", "-dict", "d:/cmusphinx/pocketsphinx/model/en-us/cmudict-en-us.dict", "-samprate", "16000/8000/48000", "-inmic", "yes"};
Process proc = rt.exec(commands);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(proc.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
String s = null;
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Java will only print "Here is the standard output of the command:" and nothing more. But it wont crash, its still running without any errors. It seems to me java will wait until the executed command is finished until it prints anything. But the software will run permanently and print some times new results ...
Any ideas?
Best regards
Mike
I suggest you do the following:
Process p = null;
ProcessBuilder b = new ProcessBuilder("D:/cmusphinx/pocketsphinx/bin/Release/x64/pocketsphinx_continuous.exe -hmm d:/cmusphinx/pocketsphinx/model/en-us/en-us -lm d:/cmusphinx/pocketsphinx/model/en-us/en-us.lm.bin -dict d:/cmusphinx/pocketsphinx/model/en-us/cmudict-en-us.dict -samprate 16000/8000/48000 -inmic yes");
try {
p = b.start();
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader output = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
try {
while ( (line = output.readLine()) != null) {
System.out.println(line);
}
} catch (IOException e) {
e.printStackTrace();
}
Using ProcessBuilder you don't have to separate parameters. Just copy the whole command in a String.
I am trying to run the below command from java and want to capture the output. The method is getting completed immediately without writing anything to the console.
Linux Command is repo forall -c 'echo pwd is;pwd;git status'
and the method is
public static String executeCommandWithOutput(String command) {
System.out.println("Running the command "+command);
StringBuffer output = new StringBuffer();
String line = "";
try {
Process process =Runtime.getRuntime().exec(command);
process.waitFor();
BufferedReader reader =
new BufferedReader(new InputStreamReader(process.getInputStream()));
while ((line = reader.readLine())!= null) {
output.append(line);
}
System.out.println("Content is "+output.toString());
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
return output.toString();
}
I tried redirecting the output to a file as well. Neither worked. Any thoughts??
Check if the command your are trying to execute has a standard output.
Probably its failing and you are getting error output.
You can check the error output with getErrorStream, documentation is here.
E.g. like this
StringBuffer error = new StringBuffer();
BufferedReader reader =
new BufferedReader(new InputStreamReader(process.getErrorStream()));
while ((line = reader.readLine())!= null) {
error.append(line);
}
System.out.println("Error is " + error.toString());
Also check the exitValue of your forked command, doc is here
int exitStatus = process.exitValue();
System.out.println("Exit status is " + exitStatus );