Caused by: java.lang.IllegalArgumentException: servlet映射中的<url pattern>[FindAllStudentServlet]无效
at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3173)
at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3160)
at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1389)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1166)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:779)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5053)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 44 more
// 注解 替代.xml的映射
@WebServlet("FindAllStudentServlet")
// 注解 替代.xml的映射
@WebServlet("/FindAllStudentServlet")