Vlad Kisel 9ddab9e69b Support single-value request param resolution for data class constructors ...

Prior to this commit, when Web MVC attempted to resolve a constructor
argument for a data class constructor with @ModelAttribute binding,
ModelAttributeMethodProcessor failed to unwrap the array returned by
WebRequest.getParameter(String).

According to the Javadoc for WebRequest.getParameter(String), "a
single-value parameter will be exposed as an array with a single
element."

This commit fixes this issue by extracting the single value from such
an array and using that as the constructor argument (potentially
converted by the WebDataBinder).

Closes gh-25200

2021-05-08 19:25:54 +02:00

..

org/springframework

Support single-value request param resolution for data class constructors

2021-05-08 19:25:54 +02:00