easyexcel注解表改名、头合合并、改变排序

实现效果：

直接使用 easyexcel 注解即可实现：

public class InOutStockVo {
    @ExcelIgnore
    private Long warehouseId;
    
    @ExcelProperty(index = 0, value = "仓库")
    private String warehouseName;

    @ExcelProperty(index = 1, value = "品牌")
    private String brandName;

    @ExcelProperty(index = 2, value = "物料分类")
    private String productTypeName;

    @ExcelProperty(index = 3, value = "物料编码")
    private String productCode;

    @ExcelProperty(index = 4, value = "物料名称")
    private String productName;

    @ExcelProperty(index = 5, value = "物料规格")
    private String specsValue;

    @ExcelProperty(index = 6, value = "批次")
    private String batchNumber;
    @ExcelProperty(index = 7, value = "单位")
    private String unit;

    @ExcelProperty(index = 8, value = {"期初库存", "库存数量"})
    private BigDecimal beginStockAmount;

    @ExcelProperty(index = 9, value = {"期初库存", "单价"})
    private BigDecimal beginPrice;

    @ExcelProperty(index = 10, value = {"期初库存", "总计金额"})
    private BigDecimal beginTotalPrice;

    @ExcelProperty(index = 11, value = {"入库", "入库数量"})
    private BigDecimal entryTotalAmount;
    
    @ExcelProperty(index = 12, value = {"入库", "入库金额"})
    private BigDecimal entryTotalPrice;

    @ExcelProperty(index = 13, value = {"出库", "出库数量"})
    private BigDecimal outTotalAmount;

    @ExcelProperty(index = 14, value = {"出库", "出库金额"})
    private BigDecimal outTotalPrice;

    @ExcelProperty(index = 15, value = {"期末库存", "库存数量"})
    private BigDecimal endStockAmount;

    @ExcelProperty(index = 16, value = {"期末库存", "单价"})
    private BigDecimal endPrice;

    @ExcelProperty(index = 17, value = {"期末库存", "总计金额"})
    private BigDecimal endTotalPrice;
}