报java.lang.ClassCastException: org.springframework.core.io.buffer.DefaultDataBufferFactory cannot be
2020-06-04 06:43
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java.lang.ClassCastException: org.springframework.core.io.buffer.DefaultDataBufferFactory cannot be cast to org.springframework.core.io.buffer.NettyDataBufferFactory
导致原因是：
因为访问页面时候是通过servlet进行远程调用获取结果集的，而访问网关是用webflux直接接收的，但是当gateway网关微服务引入servelt时候，就会使用servlet接收，但是响应却是webflux，所以出现类型转换异常，
**解决：gateway服务不能引入servlet依赖，否则会出现类型转换异常。
如果有tomcat依赖也要注释掉 tomcat是servlet容器 **
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