IDEA PermGen space内存溢出

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项目中有多个模块，在用maven启动时，报出了以下错误

[INFO] BUILD FAILURE[INFO] ------------------------------------------------------------------------[INFO] Total time: 51.439 s[INFO] Finished at: 2017-10-20T09:49:38+08:00[INFO] Final Memory: 123M/3421M[INFO] ------------------------------------------------------------------------[ERROR] PermGen space -> [Help 1][ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.[ERROR] Re-run Maven using the -X switch to enable full debug logging.[ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles:[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/OutOfMemoryErrorException in thread "main" Exception in thread "DubboShutdownHook"

看到关键字PermGen space，OutOfMemoryError，判断为内存溢出

解决方案：

File -> Settings -> Build, Execution, Deployment / Build Tools / Maven / Runner下，找到VM Options选项，默认是空的，改为如下内容（或更大值）

-XX:MaxPermSize=1024M

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