maven项目里面的web.xml开头约束是这样的
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5" />
当在后面加了东西就会报错：
The markup in the document following the root element must be well-formed.
翻译下错误：根元素后面的文档中的标记必须很好地形成。
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5" ><!--这里的“/”代表当前标签结束啊啊啊啊--> </web-app>
maven web项目的web.xml报错The markup in the document following the root element must be well-formed.
原文：https://www.cnblogs.com/shiwanming/p/9424731.html