1. List<T> 将某一个属性转化为List<String>
List<String> ids = list.stream().map(Sample2ProjectExperimentInfoEntity::getSampleType).collect(Collectors.toList());
2.将map的key转化为List<String>
List<String> currentUploadPatienIdList = sampleDatasConvertMap.keySet()
.stream()
.collect(Collectors.toList());
3.List<T>根据多个属性去重
List<SysUserEntity> distinctClass = userList.stream().
collect(Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(o ->
o.getName() + ";" + o.getPassword()))), ArrayList::new));
4.List<T>转化为Map<String,String> key:属性A,value:属性B
Map<String, String> outFlowNodesMap =
outFlowNodesList.stream().collect(Collectors.toMap(Sample2ProjectWorkflowNodeEntity::getNodeId, Sample2ProjectWorkflowNodeEntity::getNodeType));
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