文档构建器将html标记添加到doc

Question

当它试图在本地加载persistence.xml时，这实际上与Hibernate有关。

Here is the stacktrace and error
ERROR javax.persistence.PersistenceException: Invalid persistence.xml.
Error parsing XML (line-1 : column -1): cvc-elt.1.a: Cannot find the declaration of element 'HTML'.

    at org.hibernate.ejb.packaging.PersistenceXmlLoader.loadURL(PersistenceXmlLoader.java:145)
    at org.hibernate.ejb.packaging.PersistenceXmlLoader.deploy(PersistenceXmlLoader.java:169)
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:317)
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)

实际上持久性xml是简单的（我把它从较大的那个最小化，因为它没有区别）

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
</persistence>

问题在于文档构建器中的这一行

    DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
            docBuilder.setEntityResolver(resolver);
    doc = docBuilder.parse(source);

>The doc after parsed has HTML tags in it which it should not because its just a xml. I traveresed the nodes in the doc and got below elements

Found element HTML
Found element HEAD
Found element BODY
Found element PERSISTENCE

这就是为什么XSD架构验证失败，因为它不期望html元素。

任何人都知道为什么以及如何克服这一点。

Answer 1

发现了这个问题。我在类路径中有nekohtml-1.9.22.jar。它是一个解析器，也是一个标记平衡器。它被当作默认的解析器，因为它没有在xml中找到HTML标签，所以它添加了它。奇怪的是它不应该是XML的默认值。无论如何从类路径中删除它解决了这个问题。