Reading the output from a bat file run by Runtime.exec

[Matthew Hersee]

Hi,

I am running the VSS command line from a java app.

I run the runtime.exec, this executes a bat file.

I need to read the output of the process - which is the contents of a file from VSS.

However my reader only shows me the that it has run each line from the bat file, not any of the ouput. I kept thinking i should be using the p.getOutputStream() method, but i can only write to that. I am most confused.

At present i have the following code

Runtime runtime = Runtime.getRuntime();
 
String[] cmd = { "cmd", "/c", "C:/QSM/vss-view"};
try {
Process p = runtime.exec(cmd);
 
BufferedReader b = new BufferedReader(new InputStreamReader(p
.getInputStream()));
 
String line = null;
while ((line = b.readLine()) != null) {
bodyContent.append(line);
}

 

} catch (Exception e) {
 
System.out.println(e);
}

I am sure i am missing something obvious here.

Thanks in advance

Matt

[Ulf Dittmer]

Welcome to JavaRanch.

This article explains some of the pitfalls of Runtime.exec; it might be of help.

[Matthew Hersee]

thanks for the response

i looked in the errorstream and it was permissions that were stopping the final statement of my bat file from running. Hence no output

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