How to mark Spring MVC params as required

spring, spring-mvc, spring-validator

Solution

Yes, there is. `@RequestParam(required=true)` See the docs.

Required flag is even true by default, so all you need to do is:

@RequestMapping(value = "/updateArticle", method = RequestMethod.POST)
@ResponseBody
public void updateArticle(@RequestParam Long id, @RequestParam String name, @RequestParam String description) {
  ...
}

Problem

I have such method in spring controller ``` @RequestMapping(value = "/updateArticle", method = RequestMethod.POST) @ResponseBody public void updateArticle(Long id, String name, String description) { ... } ``` I want the id, and name to be REQUIRED. In the other words, if they are null values, then an exception must be thrown. How can I do that? Is there any annotation for this or something like that? Thanks

Original source