过滤器启动失败

严重: 启动过滤器异常
java.lang.NoClassDefFoundError: IllegalName: filter/CharaterEncodingFilter
	at java.lang.ClassLoader.preDefineClass(ClassLoader.java:654)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:761)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2394)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:855)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1327)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:545)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:526)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:106)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4538)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5181)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

八月 31, 2020 12:04:54 下午 org.apache.catalina.core.StandardContext startInternal
严重: 一个或多个筛选器启动失败。完整的详细信息将在相应的容器日志文件中找到
八月 31, 2020 12:04:54 下午 org.apache.catalina.core.StandardContext startInternal
严重: 由于之前的错误，Context[/filter]启动失败

web.xml配置：

<filter>
     <filter-name>CharaterEncodingFilter</filter-name>
     <filter-class>filter/CharaterEncodingFilter</filter-class>
  </filter>
  <filter-mapping>
       <filter-name>CharaterEncodingFilter</filter-name>
       <url-pattern>/*</url-pattern>
  </filter-mapping>