lombok @Builder注解

https://blog.csdn.net/baidu_35085676/article/details/89193416?spm=1001.2101.3001.6650.4&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-4-89193416-blog-120881578.pc_relevant_aa&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-4-89193416-blog-120881578.pc_relevant_aa&utm_relevant_index=6