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。

读取Excel

maven 依赖

        <!--  excel -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.15</version>
        </dependency>

excel 文档格式

这里读取的是 .xlsx 格式文件

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