bash脚本无法运行Java程序cron作业 [英] Bash Script unable to run Java Program as cron job

问题描述

我想从一个bash脚本运行一个.class文件使用crontab每1分钟。我得到的错误无法找到或加载主类Cron_Read_Send_CapacityData_To_Graphite。我已经在我的机器上设置环境变量。

如果我从它的工作原理fine.Note终端运行bash脚本的bash脚本和Java类文件是在同一文件夹

脚本：

  $猫Run_Cron_Read_Send_CapacityData_To_Graphite.sh
＃！/斌/庆典java的Cron_Read_Send_CapacityData_To_Graphite＆GT;＆GT; /home/marshell/graphite_cronjobs/Cron_Read_Send_CapacityData_To_Graphite.log
 

cron项：

  $ crontab -e命令* / 1 * * * * /home/marshell/graphite_cronjobs/Run_Cron_Read_Send_CapacityData_To_Graphite.sh＆GT;＆GT; /home/marshell/graphite_cronjobs/debug_cronjob.log 2  - ;＆放大器; 1
 

错误：

 错误：无法找到或加载主类Cron_Read_Send_CapacityData_To_Graphite
 

解决方案

您错误消息表明您的类路径设置不正确的脚本找到 Cron_Read_Send_CapacityData_To_Graphite.class ，我会使用类似 -

  CP = /家庭/马歇尔/ graphite_cronjobs＃类路径使用
LF = $ CP / Cron_Read_Send_CapacityData_To_Graphite.log＃日志文件
java命令$ CP Cron_Read_Send_CapacityData_To_Graphite＆GT;＆GT; $ LF
 

I am trying to run a .class file from a bash script every 1 minute using the crontab. I get the error Could not find or load main class Cron_Read_Send_CapacityData_To_Graphite. I have already set environment variable on my machine.

If i run the bash script from the terminal it works fine.Note the bash script and the java class file are in the same folder

Script:

$ cat Run_Cron_Read_Send_CapacityData_To_Graphite.sh
#!/bin/bash

java Cron_Read_Send_CapacityData_To_Graphite >> /home/marshell/graphite_cronjobs/Cron_Read_Send_CapacityData_To_Graphite.log

Cron entry:

$ crontab -e

*/1 * * * * /home/marshell/graphite_cronjobs/Run_Cron_Read_Send_CapacityData_To_Graphite.sh >> /home/marshell/graphite_cronjobs/debug_cronjob.log 2>&1

Error:

Error: Could not find or load main class Cron_Read_Send_CapacityData_To_Graphite

解决方案

You error message indicates that your classpath isn't set correctly for the script to find Cron_Read_Send_CapacityData_To_Graphite.class, I would use something like -

CP=/home/marshell/graphite_cronjobs # The classpath to use
LF=$CP/Cron_Read_Send_CapacityData_To_Graphite.log # the log file
java -cp $CP Cron_Read_Send_CapacityData_To_Graphite >> $LF

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