Tomact无法关闭的解决办法

tomcat启动的时候看不出异常，关闭的时候回报错类似：

Jul 17, 2015 9:47:54 AM org.apache.catalina.startup.Catalina stopServer 
SEVERE: Could not contact localhost:8005. Tomcat may not be running. 
Jul 17, 2015 9:47:54 AM org.apache.catalina.startup.Catalina stopServer 
SEVERE: Catalina.stop: 
java.net.ConnectException: Connection timed out 
at java.net.PlainSocketImpl.socketConnect(Native Method) 
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) 
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) 
at java.net.Socket.connect(Socket.java:525) 
at java.net.Socket.connect(Socket.java:475) 
at java.net.Socket.(Socket.java:372) 
at java.net.Socket.(Socket.java:186) 
at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:498) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:370) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:457)

即为8005端口未运行，使用命令netstat -ant 发现 没有找到8005端口

解决办法：

修改$JAVA_HOME/jre/lib/security/Java.security 文件中 securerandom.source 配置项:

将 
securerandom.source=file:/dev/random 
修改为： 
securerandom.source=file:/dev/urandom（网上查询的结果，我改完这个就可以了，下面的未测试） 

如果，仍然不生效，则修改为： file:/dev/./urandom

参考：https://blog.csdn.net/qq_25283709/article/details/55061251