当我们在计算处理Excel表格中的数据时,为了提高工作效率,我们常常会用到各种Excel函数公式, 本文将介绍如何使用Free Spire.XLS for Java添加公式到Excel单元格,以及如何读取单元格中的公式。
基本步骤:
1. 下载Free Spire.XLS for Java包并解压缩,然后将lib文件夹下的Spire.Xls.jar包作为依赖项导入到Java应用程序中。(也可直接通过Maven仓库安装JAR包(配置pom.xml文件的代码见下文))
2. 在Java应用程序中新建一个Java Class(此处我命名为MergeCells 和 UnmergeCells), 然后输入相应的Java代码并运行。
配置pom.xml文件:
<repositories> <repository> <id>com.e-iceblue</id> <url>http://repo.e-iceblue.cn/repository/maven-public/</url> </repository> </repositories> <dependencies> <dependency> <groupId>e-iceblue</groupId> <artifactId>spire.xls.free</artifactId> <version>2.2.0</version> </dependency> </dependencies>
添加公式
import com.spire.xls.*; public class InsertFormulas { public static void main(String[] args) { //创建Workbook对象 Workbook workbook = new Workbook(); //获取第一个工作表 Worksheet sheet = workbook.getWorksheets().get(0); //声明两个变量 int currentRow = 1; String currentFormula = null; //设置列宽 sheet.setColumnWidth(1, 26); 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 workbook.saveToFile("InsertFormulas.xlsx",FileFormat.Version2013); } }
读取公式
import com.spire.xls.*; public class ReadFormulas { public static void main(String[] args) { //创建Workbook对象 Workbook workbook = new Workbook(); //加载Excel文档 workbook.loadFromFile("InsertFormulas.xlsx"); //获取第一个工作表 Worksheet sheet = workbook.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()); } } } }