无法使用Java Servlet在cmd中打开或执行命令

Question

Want to execute echot.BAT file using java servlet. i have used following code.

Process croppingProcess =  Runtime.getRuntime()
                .exec("C:Windows/system32/cmd /c echot.BAT", null, new File("C:restapi_bat/echot"));
                int processOutput = croppingProcess.waitFor();
                if(processOutput == 0){
                    success = true;
            //do your work here
        }

but getting the error

"C:Windows/system32/cmd" (in directory "C:restapi_bat\\echot"): CreateProcess error=267, The directory name is invalid

file echot.BAT in C:\\restapi_bat
Note: using tomcat 7

Answer 1

Instead of using C:Windows/system32/cmd you should use C:\\\\Windows\\\\system32\\\\cmd, because Windows separates with \\. The / Separator is in Linux. And you have to Escape the \\, so use \\\\.

Answer 2

Using escape and Start, bat executed the solution as follow

Process croppingProcess =  Runtime.getRuntime()
                .exec("C:\\Windows\\System32\\cmd.exe /C Start C:\\restapi_bat\\echot ");
                int processOutput = croppingProcess.waitFor();
                if(processOutput == 0){
                    success = true;
            //do your work here
        }