java.lang.ClassCastException: org.apache.cxf.transport.servlet.CXFServlet cannot be cast to javax.servlet.Servlet
maven下web项目依赖servlet-api.jar
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
</dependency>
忘了应该这么写以免与tomcat内置jar包冲突：
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>