How could I validate a YAML structure in java programming

Question

I have a YAML file in my directory and I want to validate the YAML file was in correct structure using java programming. In online it having lot of YAML checker but I want to validate that on java programming.

Anthon · Answer 1 · 2015-10-07T15:59:12.517

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Just try to load it with your YAML parser/library. If that throws an error catch it and the structure is invalid. That is the way the online parsers work as well.

edited Oct 07 '15 at 15:59

answered Oct 07 '15 at 11:15

Anthon

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While this is correct, this approach doesn't cover all use cases that e.g. are covered by XSD for XML files. E.g. when a YAML file lacks a **mandatory** property, it is set to `null` in the created POJO/bean (without creating an error). What I said at least applies to snakeyaml. There might be more feature-rich parsers. – Marteng Mar 18 '21 at 13:43

score 2 · Answer 2 · answered Sep 16 '19 at 13:57

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You can use YAML parser/librairies like Jackson or SnakeYAML:

https://www.baeldung.com/jackson-yaml

https://www.baeldung.com/java-snake-yaml

answered Sep 16 '19 at 13:57

Philippe GRANET

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MBudnick · Answer 3 · 2020-06-24T21:21:43.333

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There's also https://github.com/EsotericSoftware/yamlbeans

One issue I've found is that JSON objects are acceptable YAML 1.2 and, arguably, 1.1 formats.

What valid JSON files are not valid YAML 1.1 files?

edited Jun 24 '20 at 21:21

answered Jun 24 '20 at 20:55

MBudnick

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How could I validate a YAML structure in java programming

3 Answers3