使用Lambda转换集合数据至新集合

1. 测试

public static void main(String[] args) {
	// 将 pojoList 转换至 dtoList 中
	List<Student01> dtoList = new ArrayList<>();
	List<Student01> pojoList = new ArrayList<>();
	Collections.addAll(pojoList, new Student01(1, "靳露"), new Student01(2, "于瑶"), new Student01(4, "王莹"));
 
	buildDtoList(pojoList).forEach(args1 -> dtoList.add(args1));
	dtoList.forEach(args2 -> System.out.print(JSON.toJSON(args2) + " - ".substring(0,1)));
	// TODO: {"name":"靳露","id":1} {"name":"于瑶","id":2} {"name":"王莹","id":4} 
}

2. 方法

static List<Student01> buildDtoList(List<Student01> stuList) {
	return stuList.stream().map(aItem -> {
		Student01 student01 = new Student01();
		student01.setId(aItem.getId());
		student01.setName(aItem.getName());
		return student01;
	}).collect(Collectors.toList());
}

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3. 对象转对象示例

private RcvSubmitParamBo buildRcvSubmitBoParam(BaseRequest<SubmitRcvParamDto> request) {
        RcvSubmitParamBo rcvSubmitParamBo = new RcvSubmitParamBo();
        rcvSubmitParamBo.setAsnNo(request.getData().getAsnNo());
        rcvSubmitParamBo.setWarehouseId(request.getData().getWarehouseId());
        rcvSubmitParamBo.setOperator(request.getPin());
        rcvSubmitParamBo.setTenantId(request.getTenantId());
        rcvSubmitParamBo.setSubmitRcvSkuBos(request.getData().getSubmitRcvSkuDtos().stream().map(aItem -> {
        SubmitRcvSkuBo submitRcvSkuBo = new SubmitRcvSkuBo();
        submitRcvSkuBo.setExpireDate(aItem.getExpireDate());
        submitRcvSkuBo.setLocId(aItem.getLocId());
        submitRcvSkuBo.setProduceDate(aItem.getProduceDate());
        submitRcvSkuBo.setQty(aItem.getQty());
        submitRcvSkuBo.setSkuId(aItem.getSkuId());
        submitRcvSkuBo.setSkuNature(aItem.getSkuNature());
        submitRcvSkuBo.setSkuType(aItem.getSkuType());
        return submitRcvSkuBo;
    }).collect(Collectors.toList()));
 
    return rcvSubmitParamBo;
}

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4. 集合转集合示例

private List<RcvStockInfoSo> asnDetail2RcvStockSo(List<AsnDetailDTO> asnDetailList) {
       return asnDetailList.stream().map(aItem -> {
          RcvStockInfoSo rcvStockInfoSo = new RcvStockInfoSo();
 
          rcvStockInfoSo.setAsnHeaderNo(aItem.getAsnHeaderNo());
          rcvStockInfoSo.setAsnRefNo(aItem.getAsnRefNo());
          rcvStockInfoSo.setCreateDate(aItem.getCreateDate());
          rcvStockInfoSo.setActualQty(aItem.getActualQty());
          rcvStockInfoSo.setExpectedQty(aItem.getExpectedQty());
          rcvStockInfoSo.setExtSkuId(aItem.getExtSkuId());
          rcvStockInfoSo.setLineStatus(aItem.getLineStatus());
          rcvStockInfoSo.setPurchasePrice(aItem.getPurchasePrice());
          rcvStockInfoSo.setSaleMode(aItem.getSaleMode());
          rcvStockInfoSo.setSaleUnit(aItem.getSaleUnit());
          rcvStockInfoSo.setShelfLife(aItem.getShelfLife());
          rcvStockInfoSo.setSkuId(aItem.getSkuId());
          rcvStockInfoSo.setSkuModelNo(aItem.getSkuModelNo());
          rcvStockInfoSo.setSkuName(aItem.getSkuName());
          rcvStockInfoSo.setSkuOrderNo(aItem.getSkuOrderNo());
          rcvStockInfoSo.setSkuType(aItem.getSkuType());
          rcvStockInfoSo.setTenantId(aItem.getTenantId());
          rcvStockInfoSo.setUom(aItem.getUom());
          rcvStockInfoSo.setUpcCodes(aItem.getUpcCodes());
          rcvStockInfoSo.setWarehouseId(aItem.getWarehouseId());
 
          return rcvStockInfoSo;
      }).collect(Collectors.toList());
  }