at com.sangeng.service.impl.UserServiceimpl.findAll(UserServiceimpl.java:18) ~[classes/:na]

This is a stack trace that indicates an exception was thrown in the method `findAll()` of the class `UserServiceimpl`. The exception occurred at line 18 of the `UserServiceimpl.java` file. The `~[classes/:na]` part of the stack trace indicates that the exception occurred in a compiled class file, rather than in a source file.

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用英文来回答 at com.sangeng.service.impl.UserServiceimpl.findAll(UserServiceimpl.java:18) ~[classes/:na]

The error message is indicating that there is an issue at line 18 of the UserServiceimpl.java file in the com.sangeng.service.impl package. Specifically, there seems to be an issue with the findAll method of the UserServiceimpl class. Without more information, it is difficult to determine the exact nature of the problem.

Caused by: java.lang.NullPointerException: null at com.tushu.common.utils.SpringUtil.getBean(SpringUtil.java:35) ~[classes/:na] at com.tushu.service.impl.UserAdminServiceImpl.getCacheService(UserAdminServiceImpl.java:276) ~[classes/:na] at com.tushu.service.impl.UserAdminServiceImpl.getAdminByUsername(UserAdminServiceImpl.java:61) ~[classes/:na] at com.tushu.service.impl.UserAdminServiceImpl.loadUserByUsername(UserAdminServiceImpl.java:266) ~[classes/:na] at com.tushu.config.tuSecurityConfig.lambda$userDetailsService$0(tuSecurityConfig.java:30) ~[classes/:na] at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:93) ~[spring-security-core-5.5.3.jar:5.5.3] ... 68 common frames omitted

这个异常是由于Java代码中的一个空指针引起的，具体是在SpringUtil类的第35行，该行代码尝试获取一个bean，但是该bean为null，因此导致了空指针异常。这个异常通常是由于代码没有正确的初始化或者设置bean，或者bean的依赖关系出现了问题。建议检查SpringUtil类的代码，以及与该类相关的bean的设置和依赖关系。