@NotNull: The CharSequence, Collection, Map or Array object is not null, but can be empty.
@NotEmpty: The CharSequence, Collection, Map or Array object is not null and size > 0.
@NotBlank: The string is not null and the trimmed length is greater than zero. ———————————————— 版权声明：本文为CSDN博主「melenpeng」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/melenpeng/article/details/50236449
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