eclipse 提示找不到过滤器

[suzhouzhou]

在eclipse中写了一个过滤器，tomcat7也配置了，但是启动的时候就提示，但是过滤器能起作用，那位大婶能告诉我这是什么问题啊
<filter>
<filter-name>Encoding</filter-name>
<filter-class>entity.Encoding</filter-class>
</filter>
<filter-mapping>
<filter-name>Encoding</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>

java.lang.ClassNotFoundException: entity.Encoding
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:506)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:488)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:115)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4854)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5546)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[程序员云帆哥]

继续找吧。。

[suzhouzhou]

o(︶︿︶)o 唉，无意中发现，是过滤器的注解写错了，servlet3.0中写在注解中 @WebFilter(filterName="MyFilter", urlPatterns={"/*"}) 不用写在web.xml中，写在xml中就报错