如何通过验证器获取有关无效DOM元素的更多信息?

我正在针对XSD模式使用 javax.xml.validation.Validator 类来验证内存中的DOM对象.每当填充我的DOM的信息中出现数据损坏时，我都会在验证过程中抛出 SAXParseException .

I am validating an in-memory DOM object using the javax.xml.validation.Validator class against an XSD schema. I am getting a SAXParseException being thrown during the validation whenever there is some data corruption in the information I populate my DOM from.

示例错误:

org.xml.SAXParseException:cvc-datatype-valid.1.2.1:'???"?? [????? G?> ??? p〜tn ??〜0?1]'是无效的值为'hexBinary'.

org.xml.SAXParseException: cvc-datatype-valid.1.2.1: '???"??[?????G?>???p~tn??~0?1]' is not a valid valud for 'hexBinary'.

我希望有一种方法可以在内存中的DOM中找到此错误的位置，并打印出有问题的元素及其父元素.我当前的代码是:

What I am hoping is that there is a way to find the location of this error in my in-memory DOM and print out the offending element and its parent element. My current code is:

public void writeDocumentToFile(Document document) throws XMLWriteException {
  try {
    // Validate the document against the schema
    Validator validator = getSchema(xmlSchema).newValidator();
    validator.validate(new DOMSource(document));

    // Serialisation logic here.

  } catch(SAXException e) {
    throw new XMLWriteException(e); // This is being thrown
  } // Some other exceptions caught here.
}

private Schema getSchema(URL schema) throws SAXException {
  SchemaFactory schemaFactory = 
    SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

  // Some logic here to specify a ResourceResolver

  return schemaFactory.newSchema(schema);
}

我已经研究了 Validator#setErrorHandler(ErrorHandler handler)方法，但是 ErrorHandler 接口仅使我接触了 SAXParseException 公开错误的行号和列号.因为我使用的是内存中的DOM，所以行号和列号均返回-1.

I have looked into the Validator#setErrorHandler(ErrorHandler handler) method but the ErrorHandler interface only gives me exposure to a SAXParseException which only exposes the line number and column number of the error. Because I am using an in-memory DOM this returns -1 for both line and column number.

是否有更好的方法可以做到这一点?如果库为我提供了我想要的功能，我真的不需要在将字符串添加到DOM之前手动验证它们.

Is there a better way to do this? I don't really want to have to manually validate the Strings before I add them to the DOM if the libraries provide me the function I'm looking for.

我正在使用JDK 6更新26和JDK 6更新7，具体取决于此代码的运行位置.

I'm using JDK 6 update 26 and JDK 6 update 7 depending on where this code is running.

添加了此代码-

validator.setErrorHandler(new ErrorHandler() {
  @Override
  public void warning(SAXParseException exception) throws SAXException {
    printException(exception);
    throw exception;
  }

  @Override
  public void error(SAXParseException exception) throws SAXException {
    printException(exception);
    throw exception;
  }

  @Override
  public void fatalError(SAXParseException exception) throws SAXException {
    printException(exception);
    throw exception;
  }

  private void printException(SAXParseException exception) {
    System.out.println("exception.getPublicId() = " + exception.getPublicId());
    System.out.println("exception.getSystemId() = " + exception.getSystemId());
    System.out.println("exception.getColumnNumber() = " + exception.getColumnNumber());
    System.out.println("exception.getLineNumber() = " + exception.getLineNumber());
  }
});

我得到输出:

exception.getPublicId() = null
exception.getSystemId() = null
exception.getColumnNumber() = -1
exception.getLineNumber() = -1