tomcat 啟動慢 Creation of SecureRandom instance for session ID generation using [SHA1PRNG]took [xx] mil

# vim /usr/local/tomcat/bin/catalina.sh
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JAVA_OPTS="-Djava.security.egd=file:/dev/./urandom"
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10.29注釋：

即使沒有在log中顯示xxxxxxs，僅通路慢，也可考慮此法，驗證成功。