将Runtime.exec（）与字符串[]一起使用

Question

I am trying to execute a bash script that gets passed 4 arguments from java. I can execute the script without the arguments perfectly using this code:

  try { String command = "bash bash/testbash.sh"; Runtime run = Runtime.getRuntime(); Process pr = run.exec(command); pr.waitFor(); BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream())); String line = ""; while ((line=buf.readLine())!=null) { System.out.println(line); } } catch (Exception e) { System.out.println("Exception " + e); e.printStackTrace(); } } 

So I was going to make a String[] to pass both the commands and the arguments to Runtime.exec(), like so:

  try { String[] command ={"bash bash/testbash.sh"}; Runtime run = Runtime.getRuntime(); Process pr = run.exec(command); pr.waitFor(); BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream())); String line = ""; while ((line=buf.readLine())!=null) { System.out.println(line); } } catch (Exception e) { System.out.println("Exception " + e); e.printStackTrace(); } } 

which gives me this error:

 Exception java.io.IOException: Cannot run program "bash bash/testbash.sh": error=2, No such file or directory java.io.IOException: Cannot run program "bash bash/testbash.sh": error=2, No such file or directory at java.lang.ProcessBuilder.start(ProcessBuilder.java:1042) at java.lang.Runtime.exec(Runtime.java:615) at java.lang.Runtime.exec(Runtime.java:483) at bashExecuter.main(bashExecuter.java:43) Caused by: java.io.IOException: error=2, No such file or directory at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.<init>(UNIXProcess.java:135) at java.lang.ProcessImpl.start(ProcessImpl.java:130) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1023) ... 3 more 

this makes no sense to me. The bash file clearly exists because I just used it with the String command, but when I use the same thing with String[] command its not there? How would I pass the command with arguments?

Answer 1

String []命令= {“ bash bash / testbash.sh”};

String[] command ={"bash", "bash/testbash.sh"};