具体异常：org.jasypt.exceptions.EncryptionOperationNotPossibleException: Encryption raised an exception. A possible cause is you are using strong encryption algorithms and you have not installed the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files in this Java Virtual Machine

原因：SpringBoot项目用到的jasypt加密，在项目想要反翻译得到jasypt加密的明文数据

问题：JDK目录下没有JCE依赖。

解决：

1：下去官网下载

http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

得到一个压缩包，解压

2：将local_policy.jar和US_export_policy.jar，替换JDK路径-->jre-->lib-->security下面的即可

然后重新运行即可反编译成功，拿到明文数据。