@Valid 属性嵌套验证

package order;

import lombok.NoArgsConstructor;
import lombok.RequiredArgsConstructor;
import lombok.Value;
import org.hibernate.validator.constraints.Length;
import org.jmolecules.architecture.cqrs.annotation.Command;

import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import java.util.List;

/**
 * 订单登録
 *
 * @author Xiao Xi
 */
@Command
@Value
@NoArgsConstructor
@RequiredArgsConstructor
public class CreateOrderCommand {

    /** 订单名称 */
    @NotNull
    @Length(min = 1, max = 100)
    private String orderNo;

    /** 订单详细 */
    @Valid
    private List<OrderLineVO> lines;

}

package order;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;

import javax.validation.constraints.Digits;
import javax.validation.constraints.NotNull;
import java.math.BigDecimal;

/**
 * 订单详情
 *
 * @author Xiao Xi
 */
@Setter
@Getter
@NoArgsConstructor
@AllArgsConstructor
public class OrderLineVO {

    /** 订单详细金额 */
    @NotNull
    @Field(type = FieldType.Float)
    @Digits(integer = 4, fraction = 2, message = "整数四位，小数两位；例如：7777.22")
    private BigDecimal amount;

}

需要在订单详细上添加 @Valid 注解，这时 OrderLineVO 中的属性校验才有效