相关疑难解决方法(0)

我有以下课程(来自简单的Spring教程)

public class CarValidator implements Validator {

    public boolean supports(Class aClass) {
        return Car.class.equals(aClass);
    }

    public void validate(Object obj, Errors errors) {
        Car car = (Car) obj;

        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "model", "field.required", "Required field");

        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "price", "field.required", "Required field");

        if( ! errors.hasFieldErrors("price")) {
            if (car.getPrice().intValue() == 0) {
                errors.rejectValue("price", "not_zero", "Can't be free!");
            }
        }

    }
}

Validator类是org.springframework.validation.ValidatorSpring 2.5中的类.

support方法显示一个警告(Class是一个原始类型.对泛型类的引用应该参数化),如果我尝试添加参数,如

public boolean supports(Class<?> aClass) ...

我收到以下错误:

The method supports(Class<?>) of type CarValidator has the same erasure as supports(Class) of type …