启动不起来，错误如下
Unable to complete the scan for annotations for web application [/Ftrans] due to a StackOverflowError. Possible root causes include a too low setting for -Xss and illegal cyclic inheritance dependencies.
调整了参数也没用，真正有效的是修改catalina.properties中的属性：
忽略tomcat启动时扫描jar包
tomcat8.0:
打开在tomcat的conf目录里面catalina.properties的文件，
tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\
改为tomcat.util.scan.DefaultJarScanner.jarsToSkip=\,*
tomcat8.5:
打开在tomcat的conf目录里面catalina.properties的文件，
tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\
改为tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\,*
