问题通过批处理文件设置环境变量来执行Java程序 [英] Issue with setting environment variable through bat file to execute a java program

问题描述

我对设置环境变量如下的批处理文件

I have a batch file for setting up the environment variables as follows

 @echo off

echo -- Setting Environment variables --
set "TH=D:\apache-tomcat-7.0.37\";
set "WEB-INF=%TH%webapps\ROOT\WEB-INF";
set "CLASSES_HOME=%WEB-INF%\classes";
set "CONFIG=%WEB-INF%\config-files";
set "JARS=%TH%webapps\ROOT\WEB-INF\lib";
set "JAVA_HOME=C:\Program Files\Java\jdk1.7.0_45";
set "_JAVA_OPTIONS=-Djava.net.preferIPv4Stack=true";
set "path=%path%;%JAVA_HOME%\bin;%WEB-INF%;%JARS%\jacob";

 setLocal EnableDelayedExpansion
 set "CLASSPATH=.;C:\WINNT\system32;%CLASSES_HOME%;%CONFIG%";
 for %%a in ("%TH%lib\*.jar") do (
   set CLASSPATH=!CLASSPATH!;%%a
 )

 for %%a in ("%CONFIG%\*.lic") do (
   set CLASSPATH=!CLASSPATH!;%%a
 )

  for %%a in ("%JARS%\*.jar") do (
   set CLASSPATH=!CLASSPATH!;%%a
 )

set CLASSPATH=!CLASSPATH!

echo %CLASSPATH%
echo %path%

现在我有第二个批处理文件，它调用第一个批处理文件来设置环境变量，然后一个Java类如下：

Now I have a second batch file which invokes the first batch file to set up the environment variables and then a java class as follows

call D:\myFolder\setEnvironmentvaribales.bat
java -Xms256m -Xmx1024m com.myproject.java.runBatchToDelete

这是抛出一个异常，指出主要方法不能被发现。我知道一个事实，那就是在Java类中没有问题，我可以直接运行这个程序。我相信，由于某种原因，在setEnvironmentvaribales.bat类路径和路径设置是没有得到正确设置。任何帮助解决这一问题将是极大的AP preciated。

This is throwing an exception stating that main method cannot be found. I know for a fact that there is no issue with the java class as I can run this program directly. I believe for some reason the classpath and path setting in the setEnvironmentvaribales.bat is not getting set properly. Any help to resolve the issue would be greatly appreciated.

推荐答案

更改此行：

set CLASSPATH=!CLASSPATH!

本之一：

endlocal & set CLASSPATH=%CLASSPATH%

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