解决cannot be cast to javax.servlet.Filter 报错的问题

cannot be cast to javax.servlet.Filter 报错, 原因servlet-api.jar冲突 使用maven开发web应用程序, 启动的时候报错: jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class 然后输出错误: 严重: Exception starting filter encodingFilter java.lang.ClassCastException: org.springframework.web.f