Java中合并Excel文件的实用方法详解

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.xls</artifactId>
        <version>16.3.2</version>
    </dependency>
</dependencies>

import com.spire.xls.*;

public class MergeExcels {
    public static void main(String[] args){
        String[] inputFiles = new String[]{"Budget Summary.xlsx", "Income.xlsx", "Expenses.xlsx"};

        Workbook newBook = new Workbook();
        newBook.getWorksheets().clear();
        Workbook tempBook = new Workbook();

        for (String file : inputFiles) {
            tempBook.loadFromFile(file);
            for (Worksheet sheet : (Iterable) tempBook.getWorksheets()) {
                newBook.getWorksheets().addCopy(sheet, WorksheetCopyType.CopyAll);
            }
        }

        newBook.saveToFile("MergeFiles.xlsx", ExcelVersion.Version2013);
        System.out.println("合并完成！");
    }
}

import com.spire.xls.*;

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

        Worksheet sheet1 = workbook.getWorksheets().get(0);
        Worksheet sheet2 = workbook.getWorksheets().get(1);

        CellRange sourceRange = sheet2.getAllocatedRange();
        CellRange destRange = sheet1.getCellRange(sheet1.getLastRow() + 1, 1);

        sourceRange.copy(destRange);
        sheet2.remove();

        workbook.saveToFile("MergeWorksheets.xlsx", ExcelVersion.Version2013);
        System.out.println("工作表数据合并完成！");
    }
}

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

public class MergeExcelDirectory {
    public static void main(String[] args){
        File folder = new File("excel_folder");
        File[] files = folder.listFiles((dir, name) -> name.endsWith(".xlsx"));

        Workbook newBook = new Workbook();
        newBook.getWorksheets().clear();
        Workbook tempBook = new Workbook();

        for (File file : files) {
            tempBook.loadFromFile(file.getAbsolutePath());
            for (Worksheet sheet : (Iterable) tempBook.getWorksheets()) {
                newBook.getWorksheets().addCopy(sheet, WorksheetCopyType.CopyAll);
            }
        }

        newBook.saveToFile("MergedDirectory.xlsx", ExcelVersion.Version2013);
        System.out.println("批量合并完成！");
    }
}

import com.spire.xls.*;

public class MergeWithHeader {
    public static void main(String[] args){
        String[] files = {"Jan.xlsx", "Feb.xlsx", "Mar.xlsx"};
        Workbook workbook = new Workbook();
        workbook.getWorksheets().clear();
        Worksheet masterSheet = workbook.getWorksheets().add("Summary");

        masterSheet.getCellRange("A1").setText("日期");
        masterSheet.getCellRange("B1").setText("销售额");
        masterSheet.getCellRange("C1").setText("成本");

        int currentRow = 2;
        Workbook temp = new Workbook();

        for (String file : files) {
            temp.loadFromFile(file);
            Worksheet sheet = temp.getWorksheets().get(0);
            CellRange dataRange = sheet.getAllocatedRange();
            CellRange dest = masterSheet.getCellRange(currentRow, 1);
            dataRange.copy(dest);
            currentRow += dataRange.getRowCount();
        }

        workbook.saveToFile("MergedWithHeader.xlsx", ExcelVersion.Version2013);
        System.out.println("数据合并并统一表头完成！");
    }
}

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>5.2.4</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.4</version>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>easyexcel</artifactId>
    <version>3.3.4</version>
</dependency>

// 注意：该示例简单合并了所有文件的内容，表头会重复出现。
// 在实际使用中还需完善，例如跳过后续文件的表头等。
public static void mergeExcelFiles(List<File> inputFiles, File outputFile) {
    ExcelWriter excelWriter = EasyExcel.write(outputFile).build();
    for (File inputFile : inputFiles) {
        List<List<Object>> data = EasyExcel.read(inputFile)
                .sheet()
                .doReadSync();
        excelWriter.write(data, EasyExcel.writerSheet().build());
    }
    excelWriter.finish();
}

<dependency>
    <groupId>com.aspose</groupId>
    <artifactId>aspose-cells</artifactId>
    <version>25.3</version>
</dependency>

<dependency>
    <groupId>com.groupdocs</groupId>
    <artifactId>groupdocs-merger</artifactId>
    <version>23.7</version>
</dependency>