Java添加、读取Excel公式
操作excel表格用公式来处理数据时,可通过创建公式来运算数据,或通过读取公式来获取数据信息来源。本文以通过Java代码来演示在Excel中创建及读取公式的方法。这里使用了Excel Java类库(Free Spire.XLS for Java 免费版),在官网下载获取文件包后,解压,将lib文件夹下的jar文件导入Java程序;或者通过maven仓库下载并导入。导入结果如下:
1. 创建公式
import com.spire.xls.*; public class AddFormula { public static void main(String[] args) { //创建Workbook对象 Workbook wb = new Workbook(); //获取第一个工作表 Worksheet sheet = wb.getWorksheets().get(0); //声明两个变量 int currentRow = 1; String currentFormula = null; //设置列宽 sheet.setColumnWidth(1, 32); sheet.setColumnWidth(2, 16); //写入用于测试的数据到单元格 sheet.getCellRange(currentRow,1).setValue("测试数据:"); sheet.getCellRange(currentRow,2).setNumberValue(1); sheet.getCellRange(currentRow,3).setNumberValue(2); sheet.getCellRange(currentRow,4).setNumberValue(3); sheet.getCellRange(currentRow,5).setNumberValue(4); sheet.getCellRange(currentRow,6).setNumberValue(5); //写入文本 currentRow += 2; sheet.getCellRange(currentRow,1).setValue("公式:") ; ; sheet.getCellRange(currentRow,2).setValue("结果:"); //设置单元格格式 CellRange range = sheet.getCellRange(currentRow,1,currentRow,2); range.getStyle().getFont().isBold(true); range.getStyle().setKnownColor(ExcelColors.LightGreen1); range.getStyle().setFillPattern(ExcelPatternType.Solid); range.getStyle().getBorders().getByBordersLineType(BordersLineType.EdgeBottom).setLineStyle(LineStyleType.Medium); //算数运算 currentFormula = "=1/2+3*4"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //日期函数 currentFormula = "=TODAY()"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); sheet.getCellRange(currentRow,2).getStyle().setNumberFormat("YYYY/MM/DD"); //时间函数 currentFormula = "=NOW()"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); sheet.getCellRange(currentRow,2).getStyle().setNumberFormat("H:MM AM/PM"); //IF函数 currentFormula = "=IF(B1=5,\"Yes\",\"No\")"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //PI函数 currentFormula = "=PI()"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //三角函数 currentFormula = "=SIN(PI()/6)"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //计数函数 currentFormula = "=Count(B1:F1)"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //最大值函数 currentFormula = "=MAX(B1:F1)"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //平均值函数 currentFormula = "=AVERAGE(B1:F1)"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //求和函数 currentFormula = "=SUM(B1:F1)"; sheet.getCellRange(++currentRow,1).setText(currentFormula); sheet.getCellRange(currentRow,2).setFormula(currentFormula); //保存文档 wb.saveToFile("AddFormulas.xlsx",FileFormat.Version2013); wb.dispose(); } }
公式创建结果:
2. 读取公式
import com.spire.xls.*; public class ReadFormula { public static void main(String[] args) { //加载Excel文档 Workbook wb = new Workbook(); wb.loadFromFile("AddFormulas.xlsx"); //获取第一个工作表 Worksheet sheet = wb.getWorksheets().get(0); //遍历B1到B13的单元格 for (Object cell: sheet.getCellRange("B1:B13")) { CellRange cellRange = (CellRange)cell; //判断单元格是否含有公式 if (cellRange.hasFormula()) { //打印单元格及公式 String certainCell = String.format("单元格[%d, %d]含有公式:", cellRange.getRow(), cellRange.getColumn()); System.out.println(certainCell + cellRange.getFormula()); } } } }
公式读取结果:
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