Fix web parameters resolution when injected via constructor#25200
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Fix web parameters resolution when injected via constructor#25200encircled wants to merge 1 commit into
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@sbrannen just a kind reminder. Lets review&merge or close it. This bug should be addressed somehow though. |
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Thanks for the reminder. Since this appears to be a bug, we'll see about getting it merged into |
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Alright, I will rebase it on the latest master then |
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Thanks for rebasing it on |
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…tors 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 spring-projectsgh-25200
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…tors 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 spring-projectsgh-25200
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This fixes the problem described in #25182
Comma-separated multi value parameters are wrongly injected if constructor injection is used. Only spring-web is affected, webflux works correctly.
For example
...?listOfStrings=1,2becomesList<String> listOfStrings = ["1,2"], instead of expectedList<String> listOfStrings = ["1", "2"]. The reason is thatWebRequest#getParameterValuesexposes single item params as an array which breaks conversion service later on.