Hibernate Error: org.xml.sax.SAXParseException: Element type “hibernate-mapping” must be declared

Hibernate 项目启动报错：Element type “hibernate-mapping” must be declared

1、先检查头文件是否不同：

可以参考：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

2、查看是否xml文件中是否有标签遗漏，还是字段遗漏。