通过 workOrederNum 字段排序
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| List<ProduceOrderDTO> collect = list.stream().sorted(Comparator.comparing(ProduceOrderDTO::getWorkOrderNum)).collect(Collectors.toList());
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查出 InstructionPoDTO 中 InstructionDocNum 作为 list
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List<String> instructionDocNums = read.stream().map(InstructionPoDTO::getInstructionDocNum).distinct().collect(Collectors.toList());
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筛选所有 instructionDocNum = 123 的对象
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| List<InstructionPoDTO> instructionPoDTOS = read.stream().filter(instructionPoDTO ->
instructionPoDTO.getInstructionDocNum().equals("123")).collect(Collectors.toList());
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查询出第一个
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| String instructionDocId = instructionDocs.stream().findFirst().get();
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设置 typeCode 为 key， list 的对象为 value
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| Map<String, MtGenType> typesMap = types.stream().collect(Collectors.toMap(t -> t.getTypeCode(), t -> t));
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// 通过字段去重
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| instructionSapStockDTOS.stream().collect(Collectors.collectingAndThen(Collectors.toCollection(()-> new TreeSet<>(Comparator.comparing(o -> o.getMaterial()+";"+o.getPlant()+";"+o.getStorage()+";"+o.getBatch()+";"+o.getSpecialStock()))), ArrayList::new));
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GROUP BY
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| Map<String, List<WmsIqcRecord>> map = records.stream().collect(Collectors.groupingBy(iqcRecord -> {
if (StringUtils.equals("TO_DO", iqcRecord.getStatus())) {
switch (iqcRecord.getDealMethod()) {
case "RELEASE":
return "TO_RELEASE";
case "FREEZE":
return "TO_FREEZE";
case "RETURN":
return "TO_RETURN";
default:
return "TO_DO";
}
} else if (StringUtils.equals("DONE", iqcRecord.getStatus())) {
switch (iqcRecord.getDealMethod()) {
case "RELEASE":
return "RELEASE_DONE";
case "FREEZE":
return "FREEZE_DONE";
case "RETURN":
return "RETURN_DONE";
default:
return "DONE";
}
} else {
return "DEAL";
}
}));
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| // List<LocalDate> collect = localDates.stream().sorted((var1, var2) -> {
// if (var1.isBefore(var2)) {
// return -1;
// }
// return 1;
// }).collect(Collectors.toList());
// System.out.println(localDates.stream().sorted().collect(Collectors.toList()));
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