Wmic进程在for循环中调用未启动cmd

Question

I am trying to retrieve the ProcessID of a Java app launched through a batch file. The problem is that the application does not start.

My code:

set cmd=java -jar XXXXXXX.jar XXXXXX.yml
for /f "tokens=2 delims==; " %%a in (' wmic process call create "%cmd%" ^| find "ProcessId" ') do set PID=%%a
start cmd /k echo %pid%
PAUSE

Answer 1

Batch files are pretty picky with whitespace.

Change this:

set cmd = java -jar XXXXXXX.jar XXXXXX.yml

To this:

set cmd=java -jar XXXXXXX.jar XXXXXX.yml

This works:

set cmd=notepad

for /f "tokens=2 delims==; " %%a in (' wmic process call create "%cmd%" ^| find "ProcessId" ') do set PID=%%a

start cmd /k echo %pid%

PAUSE

There may be something wrong with your jar file or perhaps java is not on your PATH. Try running your command directly at a command prompt to see if it works:

c:\>java -jar XXXXXXX.jar XXXXXX.yml

Also make sure that you use the full path to your jar file in your cmd otherwise the path will be relative to your system folder:

set cmd=java -jar c:\yourpath\XXXXXXX.jar XXXXXX.yml