DTD验证错误 问题解决 取消DTD验证 跳过DTD验证

在我们读取xml文件的时候,比如hibenate.cfg.xml这样的配置文件.
在文件的头上会有.
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
" http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
如果直接读取的话
SAXBuilder sb = new SAXBuilder();
Document doc = sb.build(new FileInputStream("hibenate.cfg.xml"));

会报错,呵呵,说DTD不存在,我想搞过这个的一定都遇到这样的方法.

如何解决呢?

新建一个类
import java.io.ByteArrayInputStream;
import java.io.IOException;

import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
* 取消DTD的验证
* @author sunlei
*
*/
public class NullEntityResolver implements EntityResolver {
static String emptyDtd = "";
static ByteArrayInputStream byteIs = new ByteArrayInputStream(emptyDtd.getBytes());

/**
* @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String)
*/
public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
return new InputSource(byteIs);
}
}

然后在你读取xml的时候
NullEntityResolver resolver = new NullEntityResolver();
xmlReader.setEntityResolver(resolver);
doc = xmlReader.read(file);
呵呵,在read前加上这两行.嗯,问题顺利解决.
就是这么简单.

支持原创啊. 转载请标明出处 http://www.chinacsharp.net

http://blog.csdn.net/keyboardsun 作者 keyboardsun