IDEA ant 生成javaWeb项目的jar包问题

1.错误提示如下：

        Exception in thread "main" com.intellij.rt.ant.execution.AntMain2$1: 
The version of the executed Ant is not compatible with the JRE version 1.7.0_80. 
To use Ant with this Java version, download an older version of Ant, unpack it and specify the path to it on the 'Execution' tab in the 'Build File Properties' dialog (accessible via the 'Ant Build' tool window -> Properties button).
        解决方法：

        1）下载apache ant包；

        2）设置系统环境变量ANT_HOME和Path (增加%ANT_HOME%\bin);

        3）查看ant -version,确认配置正常；

        4）配置IDEA ANT；如下图：        

 2.编译时报错，错误提示如下：

系统资源不足
java.lang.OutOfMemoryError: Java heap space

        解决方法：

        1）.设置Ant command line:-J-Xmx1024m -J-Xss128m