将JAVA程序作为计划任务运行 [英] Running a JAVA program as a scheduled task

问题描述

我试图在Windows 7计算机上每天运行一次简单的JAVA程序。

I am trying to run a simple JAVA program once per day on a Windows 7 machine.

我的代码在NetBeans中运行良好。如果我做了一个干净的构建它建议：

My code runs fine inside NetBeans. If I do a clean and build it suggests this:

C:\Program Files\Java\jdk1.7.0/bin/java -jar "C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\Facebook.jar"

当然，由于程序和文件之间的空间，这在DOS提示符下不起作用所以我这样做：

This does not work from the DOS prompt of course because of the space between program and files so I do this:

C:\Program Files\Java\jdk1.7.0/bin/java -jar "C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\Facebook.jar" -jar "C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\Facebook.jar"

这适用于DOS提示符。

This works from the DOS prompt.

我现在在Windows Scheduler中创建一个任务来运行：

I now create a task in Windows Scheduler to run:

C:\Program Files\Java\jdk1.7.0/bin/java

带参数：

-jar "C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\Facebook.jar"

当我然后运行它，我看到的只是一个DOS框闪烁一秒钟。我希望代码运行大约需要30秒。代码应该将数据保存到数据库中，不会发生更新。

When I then run it, all I see is a DOS box flashing up for a second. I expect the code to take about 30 secs to run. The code should persist data to a database and no updates happen.

代码也使用 java.util.logging 所以我应该看到日志条目而我不这样做。

The code also uses java.util.logging so I should see log entries and I don't.

我强烈怀疑我没有正确运行JAVA命令或者它存在一个错误的类路径问题通过从DOS提示符运行时不存在的调度程序运行。

I strongly suspect that I am not running the JAVA command properly or that there's a bad classpath issue that it present when running via Scheduler that isn't there when running from the DOS prompt.

帮助将不胜感激。如果您之前已经看过这个并且可以对它进行排序那么会很棒。如果您可以告诉我如何从Scheduler获取有意义的错误跟踪，那么这也非常有用。

Help would be appreciated. If you've seen this before and can sort it that would be great. If you can tell me how to get a meaningful error trace from Scheduler than that would also be really helpful.

谢谢！

推荐答案

我认为您可以创建一个简单的批处理脚本，以这种方式启动您的程序：

I Think that you could create a simple batch script that will launch your program in this way :

@echo off
REM Eventually change directory to the program directory 
cd C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\
REM run the program
"C:\Program Files\Java\jdk1.7.0\bin\java.exe" -jar "C:\Users\User1\Documents\NetBeansProjects\Facebook\dist\Facebook.jar"

将其复制到记事本中并保存作为java_script.cmd，然后直接安排这个脚本而不是程序。

Copy it into the notepad and save as java_script.cmd and then schedule this script instead of the program directly.

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