Error after upgrading Snake YAML from 1.33 to 2.0

[Arvind Krishnakumar]

I’m seeing the following runtime error after my recent upgrade from 1.33 to 2.0:

java.lang.NoSuchMethodError: org.yaml.snakeyaml.constructor.SafeConstructor: method 'void <init>()' not found

Can someone please assist?

P.S: I’m not using Spring in my project.

[Andrey Somov]

Do you use any IDE ?

SafeConstructor requires to have LoaderOptions in its constructor.

(why Spring should anyhow affect how you create an instance of SafeConstructor?)

[Arvind Krishnakumar]

I'm using SafeConstructor like this:

Yaml yaml = new Yaml(new SafeConstructor(new LoaderOptions()), new Representer(yamlOptions()));

‌

[Andrey Somov]

The initial report clearly shows that you call empty contructor: method 'void <init>()

[Andrey Somov]

Can you please provide a complete failing test ?

[renxue he (Ralph)]

It look like you parse bean has not empty param constructor and the snakeyaml need it the parse by reflect

[Arvind Krishnakumar]

Apologies, it was not a SnakeYAML library issue. This can be closed.