摘要：
Strings are a fundamental part of any modern programming language, every bit as important as numbers. So you'd think that Java programmers would go ou... 阅读全文
摘要：
出现：java.lang.SecurityException：JCE cannot authenticate the provider BC2种方法：修改jdk的提供者：在jdk/jre/lib/sercurity/java.security 增加security.provider.11=org.b... 阅读全文