Why does my Java code execute the cmd command without responding?

Question

I want to use runtime to execute cmdline. This command is to generate example_jtl.jtl and example_visual (a blank folder and new file in here) by example.jmx. The Java code is without error after running, but there is no new file and folder. What should I do?

try {
    System.out.println("begin cmd");
    Runtime mt = Runtime.getRuntime();
    //mt.exec("cmd \\c ionic -v");
    String cmd = "cmd D:\\Programming\\JMeter\\apache-jmeter-5.5\\bin\\jmeter -n -t D:\\Programming\\JMeter\\apache-jmeter-5.5\\result\\example.jmx -l D:\\Programming\\JMeter\\apache-jmeter-5.5\\result\\example_jtl.jtl -e -o D:\\Programming\\JMeter\\apache-jmeter-5.5\\result\\example_visual";
    Process pro = mt.exec(cmd);
    InputStream ers= pro.getErrorStream();
    pro.waitFor();
} catch (IOException ioe) {
    ioe.printStackTrace();
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

After the program is executed, the example_jtl.jtl file and the example_visual folder should be generated under the /result folder.

Your problem is similar to the follow one, please refer to : https://stackoverflow.com/a/5711150/7478145 — elgsylvain85, Mar 22 '23 at 09:27

score 0 · Accepted Answer · answered Mar 22 '23 at 09:49

0

I think you need to change your command from cmd to cmd /c because currently you're just kicking off a CMD instance and the rest is simply ignored.

Also be aware that it's possible to kick off a JMeter test using JMeter API, take a look at StandardJMeterEngine class JavaDoc and JMeter Command Line Overview: 5 Ways To Launch a Test article for more details if needed

answered Mar 22 '23 at 09:49

Dmitri T

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thanks，I added /c and it work correctly！ – 王纾林 Mar 23 '23 at 14:48

Why does my Java code execute the cmd command without responding?

1 Answers1