2</version> <configuration> 1.7 <target>1.7</target> <encoding>UTF-8</encoding> <compilerArguments> <extdirs>project-demo\lib</extdirs> </compilerArguments> </configuration> </plugin> </plugins> 只要在pom.xml文件中插入这句,刷新下,将原有的target文件夹clean了,再重新运行一下就有lib文件夹了...