Syntactically incorrect request sent upon submitting form with invalid data in Spring MVC (which uses hibernate Validator)

Question

Login form:

Answer 1

You have to modify the order of your arguments. Put the BindingResult result parameter always directly after the parameter with the @Valid annotation.

@RequestMapping(value = "login", method=RequestMethod.POST)
public String submitloginForm(@Valid loginData logindata, BindingResult result,
                              SessionStatus state, Model model)

This was even mentioned in this weeks This Week in Spring - March 5th, 2013 blog entry

Someone asked me this the other day and I felt like it was worthy of a mention: in your Spring MVC @Controller class handler methods, make sure that the BindingResult argument is immediately after the model or command argument, like this: @RequestMapping(...) public String handleRequest( @ModelAttribute @Valid YourCustomPojo attempt, BindingResult result). In this example, handleRequest will validate the POJO (YourCustomPojo) - checking the POJO for JSR303-annotations and attempting to apply the constraints because the POJO is annotated with @Valid - and stash any errors in the BindingResult, which it makes available if we ask for it.

Spring will

• 0) determin the handler method
• 1) create an instance of loginData
• 2) populate it
• 3) validate it, and store the validation result in BindingResult
• 4) invoke the method (with loginData and BindingResult values), no matter whenever the binding Result contains an error or not