Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [271] milliseconds

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翻译过来是:使用[SHA1PRNG]创建用于会话ID生成的SecureRandom实例花费了[271]毫秒。

 

1/[SHA1PRNG] java的一个基于SHA-1算法实现且保密性较强的伪随机数生成器,详见java.security.SecureRandom()

 

找到两种解决办法/https://blog.csdn.net/u011627980/article/details/54024974:

1)在Tomcat环境中解决

可以通过配置JRE使用非阻塞的Entropy Source。

在catalina.sh中加入这么一行:-Djava.security.egd=file:/dev/./urandom 即可。

加入后再启动Tomcat,整个启动耗时下降到Server startup in 2912 ms。

2)在JVM环境中解决

打开$JAVA_PATH/jre/lib/security/java.security这个文件,找到下面的内容:

securerandom.source=file:/dev/urandom

替换成

securerandom.source=file:/dev/./urandom

但是都不奏效,后来发现本地环境jdk是1.8,jre是1.7
全部卸载后安装同一版本。最后work...


 















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