新建maven project后可能会报错：web.xml is missing and <failOnMissingWebXml> is set to true
解决办法：
1. 右键点击Project Explorer中的Deployment Descriptor
2. 选择Generate Deployment Descriptor Stub
项目自动生成src/main/webapp/WEB-INF/web.xml文件。
web.xml is missing and <failOnMissingWebXml> is set to true
原文：https://www.cnblogs.com/wrong/p/8947245.html