struts2+hibernate开发 断网情况下运行报错

报错：

org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/minashop/entity/User.hbm.xml
    .......
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input stream
  ......
Caused by: org.dom4j.DocumentException: www.hibernate.org Nested exception: www.hibernate.org
 ........

检查发现配置文件：

<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

将其修改为：

<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

 

原因：上面的dtd会连接到hibernate官网进行验证，因此断网的话就会报错