java - Spring Boot 类 Size 未找到 @Size(min=1,max=18)

Question

我有一个 User 类，如下所示，我正在尝试强制验证，但我得到了:

error cannot find symbol symbol: class Size

我的类(class)看起来像这样:

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class User {

    @Id
    private long id;
    @Size(min=1,max=18)
    private int age;

    // getters and setters

}

Answer 1

您缺少尺寸注释的导入。

import javax.validation.constraints.Size;