1. 程式人生 > >No grammar constraints (DTD or XML Schema) referenced in the document.

No grammar constraints (DTD or XML Schema) referenced in the document.

class doctype app ati lns cati nts htm 解決

問題描述

web.xml 使用 Servlet4.0 版本,No grammar constraints (DTD or XML Schema) referenced in the document.

解決方法

添加 <!DOCTYPE html>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<web-app version="4.0" 
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee           
    http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd">
  
</web-app>

No grammar constraints (DTD or XML Schema) referenced in the document.