问题
I am trying to exec a java jar file using php exec();
The command is
"C:\Program Files\Java\jdk1.5.0_15\bin\java.exe" -jar "C:\batik\batik-rasterizer.jar" -m image/png -d "C:/path/to/file/filename.png" -w 800 "C:/path/to/file/filename.svg"
When I run this command on the server using CMD.exe or Power Shell works fine but when I run it with PHP using exec() or system() or shell_exec() it will not execute returning a blank page
回答1:
OK I got it figured out,
First the java jdk shouldn't be installed in the programs folder for some reason iis_iusrs doesn't have the permission to execute any files there.
Secondly the code should look like this
exec("C:\\Java\\jre6\\bin\\java.exe -jar C:\\batik\\batik-rasterizer.jar -m image/png -d "C:\\path\\to\\file\\filename.png" -w 800 "C:\\path\\to\\file\\filename.svg");
来源：https://stackoverflow.com/questions/6155153/php-exec-java-on-iis-7