问题描写叙述：
在Eclipse中执行ant批量打包工具出错，日志信息例如以下:
D:Androidandroid-sdk-windows oolsantuild.xml:601: The following error occurred
while executing this line:
D:Androidandroid-sdk-windows oolsantuild.xml:720: The following error occurred
while executing this line:
D:Androidandroid-sdk-windows oolsantuild.xml:734: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to “D:Program FilesJavajre7″
解决方式：
Eclipse菜单 – Window – Preferences – Java – Installed JREs – 选中栏目表格中的jre项 – Edit – Add External JARs – 选择jdk文件夹/lib/tools.jar - 确认其增加JRE system libraries– Finish – OK
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