ant 执行javac时，提示warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set

在用ant编译的时候，提示

，

原来的代码：

<javac srcdir="${src.home}" destdir="${build.home}/WEB-INF/classes" debug="${compile.debug}" deprecation="${compile.deprecation}" source="${source.ver}" memoryMaximumSize="${javac.memoryMaximumSize}" fork="${javac.fork}" verbose="${javac.verbose}" failοnerrοr="${javac.failonerror}" encoding="GBK" optimize="${compile.optimize}">

修改为以下即可（加上 includeantruntime="false"）：

<javac srcdir="${src.home}" destdir="${build.home}/WEB-INF/classes" debug="${compile.debug}" includeantruntime="false" deprecation="${compile.deprecation}" source="${source.ver}" memoryMaximumSize="${javac.memoryMaximumSize}" fork="${javac.fork}" verbose="${javac.verbose}" failοnerrοr="${javac.failonerror}" encoding="GBK" optimize="${compile.optimize}">