maven org.springframework.web.filter.CharacterEncodingFilter cannot be cast to javax.servlet.Filter

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maven项目解决办法：

   对于servlet-ap.jar 添加<scope>provided</scope> 即可解决。

    

<dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>7.0.62</version>
            <scope>provided</scope>
</dependency>

或者是

<dependency>  
    <groupId>javax.servlet</groupId>  
    <artifactId>servlet-api</artifactId>  
    <version>2.5</version>  
    <scope>provided</scope>  
</dependency>