java 文件名或扩展名太长,JavaC CreateProcess error = 206，文件名或扩展名太长

I tried to compile java code, but I got the error:

Caused by: java.io.IOException: Cannot run program "C:\jdk\bin\javac": CreateProcess error=206, The filename or extension is too long.

This is the content of my build file:

I think maybe my classpath: ${was_cp} is too long. How can I fix this ?

解决方案

The problem isn't that your classpath is too large. It's that you're converting into one gigantic string. Simply use the classpathref attribute instead:

fork="yes"

executable="${java.home}/bin/javac"

compiler="javac1.6"

includeantruntime="false"

encoding="utf-8"

srcdir="${workspace}/${project.name}/src"

destdir="${workspace}/${project.name}/WebContent/WEB-INF/classes"

classpathref="was.runtime"

/>