简介
众多 Java 攻城狮对 excel 读写等使用并不精通。本文通过最易理解，拿来即用原则编写。
编写地址：https://javapub.blog.csdn.net/article/details/120166106
一、读取Excel
maven 依赖
<!-- excel --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.15</version> </dependency>
jar下载地址：https://download.csdn.net/download/qq_40374604/22168010
excel 文档格式
这里读取的是 .xlsx 格式文件
下载excel：https://download.csdn.net/download/qq_40374604/22202363
java 源码
package com.javapub; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io.FileInputStream; public class ExcelTest { private static XSSFSheet sheet; public static void main(String[] args) { ExcelTest excelTest = new ExcelTest(); String filePath = "D:\\java\\idea_workspace\\testAll\\src\\main\\resources\\excel\\testexcel.xlsx";//路径名 String sheetName = "Sheet1";//表名 FileInputStream fileInputStream = null; try { fileInputStream = new FileInputStream(filePath); XSSFWorkbook sheets = new XSSFWorkbook(fileInputStream); //获取sheet sheet = sheets.getSheet(sheetName); //获取第二行第4列 String cell2 = excelTest.getExcelDateByIndex(1, 3); System.out.println(cell2); System.out.println("----------------------------------------------"); excelTest.readExcelData(); } catch (Exception e) { e.printStackTrace(); } finally { if (fileInputStream != null) { try { fileInputStream.close();//关闭流 } catch (Exception e) { e.printStackTrace(); } } } } /** * 根据行和列的索引获取单元格的数据 * * @param row * @param column * @return */ public String getExcelDateByIndex(int row, int column) { XSSFRow xssfRow = sheet.getRow(row); String cell = xssfRow.getCell(column).toString(); return cell; } //打印excel数据 public void readExcelData() { //获取行数 int rows = sheet.getPhysicalNumberOfRows(); for (int i = 0; i < rows; i++) { //获取列数 XSSFRow row = sheet.getRow(i); int columns = row.getPhysicalNumberOfCells(); for (int j = 0; j < columns; j++) { String cell = row.getCell(j).toString(); System.out.println(cell); } } } }
运行结果
