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https://blog.csdn.net/u012881904/article/details/68954347
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https://blog.csdn.net/kuyuyingzi/article/details/30529053
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https://www.ibm.com/developerworks/cn/java/j-lo-googlecollection/index.html
一行代码实现java list去重 - JAVA编程语言程序开发技术文章 - 红黑联盟
https://www.2cto.com/kf/201410/341634.html
Java中对List去重, Stream去重 - Ryan.Miao - 博客园
https://www.cnblogs.com/woshimrf/p/java-list-distinct.html
Java中对List去重 Stream去重的解决方法_java_脚本之家
https://www.jb51.net/article/138124.htm
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https://blog.csdn.net/u012156163/article/details/78338574