SecurityUtil.doAsPrivilege=PrivilegedExceptionAction\u30d6\u30ed\u30c3\u30af\u3092\u5b9f\u884c\u4e2d\u306b\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002