使用Java读取Excel文件内容的三种方法

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>
<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.xls.free</artifactId>
    <version>5.3.0</version>
</dependency>

import com.spire.xls.*;

public class ReadExcel {
    public static void main(String[] args) {
        // 创建Workbook对象并加载Excel文件
        Workbook workbook = new Workbook();
        workbook.loadFromFile("data.xlsx"); // 或 "data.xls"

        // 获取第一个工作表
        Worksheet sheet = workbook.getWorksheets().get(0);

        // 遍历每一行每一列，读取单元格内容
        for (int i = 1; i <= sheet.getLastRow(); i++) {
            for (int j = 1; j <= sheet.getLastColumn(); j++) {
                String cellText = sheet.getCellRange(i, j).getValue();
                System.out.print(cellText + "\t");
            }
            System.out.println();
        }
    }
}

import com.spire.xls.*;
import java.io.*;

public class ReadExcelFromStream {
    public static void main(String[] args) throws FileNotFoundException {
        // 创建输入流对象
        InputStream stream = new FileInputStream("data.xlsx");

        // 加载Excel文件
        Workbook workbook = new Workbook();
        workbook.loadFromStream(stream);

        System.out.println("Load Excel file successfully.");
    }
}

import com.spire.xls.*;
import java.util.Date;

public class ReadCellTypes {
    public static void main(String[] args) {
        Workbook workbook = new Workbook();
        workbook.loadFromFile("data.xlsx");

        Worksheet sheet = workbook.getWorksheets().get(0);
        CellRange cell = sheet.getRange().get(2, 1); // B2

        String text = cell.getText(); // 显示文本
        String value = cell.getValue(); // 原始字符串
        Object value2 = cell.getValue2(); // 通用对象

        String formula = cell.getFormula(); // 公式内容
        String result = cell.getEnvalutedValue(); // 公式计算结果

        double number = cell.getNumberValue(); // 数值
        Date date = cell.getDateTimeValue(); // 日期
        boolean bool = cell.getBooleanValue(); // 布尔值

        System.out.println("Text: " + text);
        System.out.println("Raw Value: " + value);
        System.out.println("Formula: " + formula);
        System.out.println("Evaluated Result: " + result);
        System.out.println("Number: " + number);
        System.out.println("Date: " + date);
        System.out.println("Boolean: " + bool);
    }
}