使用javax.validation验证请求，并将List<Integer>作为字段

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.util.List;

public class Request {
    @NotEmpty(message = "List不能为空")
    @Size(min = 1, max = 10, message = "List大小必须在1到10之间")
    private List<@NotNull(message = "List元素不能为空") Integer> numbers;

    // 省略getter和setter方法
}

import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

public class Main {
    public static void main(String[] args) {
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        Validator validator = factory.getValidator();

        Request request = new Request();
        List<Integer> numbers = new ArrayList<>();
        numbers.add(1);
        numbers.add(null);
        request.setNumbers(numbers);

        Set<ConstraintViolation<Request>> violations = validator.validate(request);
        for (ConstraintViolation<Request> violation : violations) {
            System.out.println(violation.getMessage());
        }
    }
}