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cannot be cast to javax.servletFilter
java.lang.ClassCastException: org.springframework.web.filter.CharacterEncodingFilter cannot be cast to javax.servlet.Filter at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
原因：可能是包冲突了 One of your dependencies are including a servlet-api into your war file which causes that behavior. Using mvn dependency:tree, you can find out which of your dependency is that. After that you need to exclude the servlet-api as follows:
<dependency> 解决办法：
<dependency> <groupId>[VALUE]</groupId> <artifactId>[VALUE]</artifactId> <version>[VALUE]</version> <exclusions> <exclusion> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> </exclusion> </exclusions></dependency>例子：
<!-- 去除自带servlet依赖避免冲突--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> <exclusions> <exclusion> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> </exclusion> </exclusions> </dependency>cannot be cast to javax.servletFilter
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