list根据某字段去重

questionnaireRiskEOList = questionnaireRiskEOList.stream().collect(Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(QuestionnaireRiskEO :: getQuestionnaireCode))), ArrayList::new));
https://blog.csdn.net/gsls200808/article/details/86501905



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原文地址：https://www.cnblogs.com/yushizhang/p/13387747.html