Crontab + Ubuntu + Java不起作用

Question

If I directly run the bellow code in terminal it is working perfect.

/usr/bin/java -jar /var/jboss-as-7.1.1.Final/standalone/email_linux/notification_18.jar

But when I set the same as a crontab in ubuntu server then it is not working.

*/3 * * * * /usr/bin/java -jar /var/jboss-as-7.1.1.Final/standalone/email_linux/notification_18.jar

Any one know why unexpected behavior?

Answer 1

The crontab task is executed under a different user from the one with which you are testing the call. JBoss depends on a number of environment variables, which are probably undefined in that context. So find out what that particular JAR needs from the environment and then add it into a shell script which you run from the cron task (instead of directly running java from cron).

Answer 2

即使您正在读取或写入文件，即使jar文件和读取文件位于同一目录中，也请确保在源代码中包含绝对路径。

Answer 3

指定绝对路径后解析