IDEA使用Ant打包报错解决方法

在IDEA中项目使用Ant打包报错

报错如下：

at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1365)
at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:1070)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
at org.apache.tools.ant.Main.runBuild(Main.java:854)
at org.apache.tools.ant.Main.startAnt(Main.java:236)
at org.apache.tools.ant.Main.start(Main.java:199)
at org.apache.tools.ant.Main.main(Main.java:287)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30)

初步猜测原因是：IDEA把Ant加载到classpath里使用，导致部分类不适配导致的
解决方法： 手动下载Ant，将ant的bin目录配置到环境变量Path中，然后到项目目录下，打开命令consle，手动使用Ant命令打包，ant -f **build.xml.