Ошибка формата сообщения saxparseexception cvc pattern valid value

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I’m validating against XMLSchema in Java, and getting SAXParseExceptions thrown when I have non-valid content models.

I’m going to be using these exceptions to highlight where the validation has failed — but the SAXParseExceptions seem to be a little too low-level.

For example, for a failure on an enumeration, I get the validity error that the value provided doesn’t match the content model in one exception, and the element it applies to in the next.

I’m thinking I need to have a utility that abstracts a little to merge related errors together and parse exception text into useable exception properties.

Is this a reasonable approach, or am I just missing something, or maybe a library or helper class?

---

Update @timgilbert, thanks for the response.

For example, a SAXParseException I found on t’internet

cvc-pattern-valid: Value 'en' is not facet-valid
with respect to pattern '([a-zA-Z]{1,8})(-[a-zA-Z0-9]{1,8})*'

The key things for me are

• Element ‘en’ to which this exception applies. Why can I not call exception.getElement() or something, and why not an XPath to the element in question? More useful with an in-memory document than the line and column number!
• It’s a pattern validation failure. Why can I not get something like a enumeration of possible types of failure and a reference to the appropriate one?
• The actual pattern that validation has failed against.
• There’ll be another exception thrown next to tell me the value of the ‘en’ element that caused the problem that I need to merge

An example of what I’d like to be able to do is have people submit a document and have the document highlighted where validation fails with a user friendly message — the error message above kinda doesn’t seem very friendly… having to parse by single quotes just feels like an accident waiting to happen

I think I’m maybe doing it wrong with the ‘reference-to-element’ thing, and perhaps I should have an identity transform of the document by default as part of the validation, and augment the transformation with validation-error attributes that I can pick out with CSS. That still won’t help if I need to parse the messages to make them more friendly though…

Re: tight binding, javax.xml.validation.Validator.validate() throws org.xml.sax.SAXException anyway — not sure how I can get away from assuming the binding…

Cheers

I’m validating against XMLSchema in Java, and getting SAXParseExceptions thrown when I have non-valid content models.

I’m going to be using these exceptions to highlight where the validation has failed — but the SAXParseExceptions seem to be a little too low-level.

For example, for a failure on an enumeration, I get the validity error that the value provided doesn’t match the content model in one exception, and the element it applies to in the next.

I’m thinking I need to have a utility that abstracts a little to merge related errors together and parse exception text into useable exception properties.

Is this a reasonable approach, or am I just missing something, or maybe a library or helper class?

---

Update @timgilbert, thanks for the response.

For example, a SAXParseException I found on t’internet

cvc-pattern-valid: Value 'en' is not facet-valid
with respect to pattern '([a-zA-Z]{1,8})(-[a-zA-Z0-9]{1,8})*'

The key things for me are

• Element ‘en’ to which this exception applies. Why can I not call exception.getElement() or something, and why not an XPath to the element in question? More useful with an in-memory document than the line and column number!
• It’s a pattern validation failure. Why can I not get something like a enumeration of possible types of failure and a reference to the appropriate one?
• The actual pattern that validation has failed against.
• There’ll be another exception thrown next to tell me the value of the ‘en’ element that caused the problem that I need to merge

An example of what I’d like to be able to do is have people submit a document and have the document highlighted where validation fails with a user friendly message — the error message above kinda doesn’t seem very friendly… having to parse by single quotes just feels like an accident waiting to happen

I think I’m maybe doing it wrong with the ‘reference-to-element’ thing, and perhaps I should have an identity transform of the document by default as part of the validation, and augment the transformation with validation-error attributes that I can pick out with CSS. That still won’t help if I need to parse the messages to make them more friendly though…

Re: tight binding, javax.xml.validation.Validator.validate() throws org.xml.sax.SAXException anyway — not sure how I can get away from assuming the binding…

Cheers