idea启动tomcat的时候报错了，对某一个servlet找不到？

在网页上其他功能都可以实现，只要涉及到这个servlet的全都出错。之前都是好好的！我也不知道为什么会这样

17-Apr-2018 10:09:50.393 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource Unable to process web resource [/WEB-INF/classes/org/zhh/hotel/controller/OrderServlet.class] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: It is not a Java .class file
at org.apache.tomcat.util.bcel.classfile.ClassParser.readID(ClassParser.java:200)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:78)

at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1733)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:484)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:433)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:346)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)

把代码贴出来看看,是不是import错了包.

你的注解有问题，检查一下注解

首先你需要确定是项目的问题还是Tomcat的问题（换一个新的Tomcat跑一下）
2、如果新的Tomcat跑项目没问题那就是原来Tomcat的问题否则就是项目有问题
如果项目有问题就需要把代码贴出来看下

我认为是项目本身的问题，可能这个.class文件没有加载上

把原先的tomcat卸载了，然后从新安装就可以了

建议重新安装Tomcat，我之前也遇见过这类情况

项目clean一下，再install试试

https://blog.csdn.net/qq_35246620/article/details/70174839 仅供参考

可能是版本里面缺少对应的文件 可以换个版本试试 把真个tomcat删了 重新安装配置