CODEWITHSUNDEEP
spring-bootbean-validationcustom-validators
Eddard Stark
Eddard Stark

Reputation: 3595

Custom form validation in Spring boot

I am working on a spring boot application and I have a password reset form. I am using a class like this to validate the inputs.

public class PasswordResetForm {

    @NotEmpty
    @Size(min=6, message="must be at least 6 characters")
    private String password;

    private String passwordConfirm;

    //Getter and Setters
}

So, I now want to validate if the fields passwordConfirm and password are equals, I searched all over but could not find how to add a custom validation in this case. So, how do I add custom validation for other fields?

My controller's action looks like this

@RequestMapping(value = "/password-change/{id}-{tokenNumber}", method = RequestMethod.POST)
public String changePassword(@PathVariable String id, @PathVariable String tokenNumber, @Valid PasswordResetForm form, BindingResult formBinding, Model model) {

    if (formBinding.hasErrors())
        return "change-password";

    //Other stuff
}

Upvotes: 1

Views: 5483

Answers (3)

Javvano
Javvano

Reputation: 1059

or if you wanna validate simply only this (passwordConfirm and password are equals) case.

you can use @AssertTrue.

@AssertTrue
public boolean isDifferentPass() {
    return !password.equals(passwordConfirm);
}

if these two fileds are same , then your controller's BindingResult has error

Upvotes: 5

haykart
haykart

Reputation: 957

You can use @Validated annotation for forcing validation of @RequestParam and @PathVariable. @Valid is for forcing validation of @RequestBody

Upvotes: 0

pczeus
pczeus

Reputation: 7868

For your needs, you could consider creating a custom @Constraint. You would first create the constraint annotation:

@Target({ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy=MyConstraintValidator.class)
public @interface MyConstraint {
}

And then the constraint validator:

import javax.validation.ConstraintValidator;

public class MyConstraintValidator implements ConstraintValidator {

    @Autowired;
    private Foo aDependency;
    ...
}

You can find additional reference for this here: Dependency Injection in JSR-303 Constraint Validator with Spring fails

And on the Spring Docs:

http://docs.spring.io/autorepo/docs/spring/3.2.x/spring-framework-reference/html/validation.html

Upvotes: 4

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