关于tomcat在linux下启动 org.apache.catalina.util.SessionIdGenerator.createSecureRandom Creation of SecureRa ndom instance for session ID generation using [SHA1PRNG] took 巨慢的情况

org.apache.catalina.util.SessionIdGenerator.createSecureRandom Creation of SecureRa
ndom instance for session ID generation using [SHA1PRNG] took [142,673] milliseconds.

在catalina.sh 中,

JAVA_OPTS="$JAVA_OPTS -Djava.protocol.handler.pkgs=org.apache.catalina.webresources"

参数加入 -Djava.security.egd=file:/dev/./urandom 

重启tomcat