以上报错原因一般都是所在controller中引入service时候，忘记写注解@Resource或者@Autowired注解导致
免责声明！
本站转载的文章为个人学习借鉴使用，本站对版权不负任何法律责任。如果侵犯了您的隐私权益，请联系本站邮箱yoyou2525@163.com删除。
猜您在找
报错更改 Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] wit
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed;springboot无法注入，注入后无效
错误：严重: Servlet.service() for servlet [appServlet] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is
Request processing failed; nested exception is java.lang.NullPointerException
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception 异常
Servlet.service() for servlet [jsp] in context with path [/Healthy_manager] threw exception [Unable to compile class for JSP] with root cause java.lang.IllegalArgumentException: Page directive: inval
error：org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
SSM整合中的nested exception is java.lang.NullPointerException问题
?--Porg.springframework.beans.MethodInvocationException: Property 'username' threw exception; nested exception is java.lang.NullPointerException