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org.apache.catalina.deploy.WebXml addServlet今天在启动java项目的时候报错了，原因分析：lib包下catalina.jar与tomcat服务器下catalina.jar冲突，将项目lib包下catalina.jar去掉即可

vue 项目报错: request to https://registry.npm.taobao.org/vue-loader failed

vue 项目报错: request to https://registry.npm.taobao.org/vue-loader failed