Java高效实现将CSV文件转换为PDF文档的完整解决方案

<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>15.12.15</version>
    </dependency>
</dependencies>

import com.spire.xls.Workbook; 
import com.spire.xls.Worksheet;

public class ConvertCsvToPdf {
    public static void main(String []args) {
        // 创建 Workbook 实例
        Workbook wb = new Workbook();
        
        // 加载 CSV 文件
        wb.loadFromFile("Sample.csv", ",");
        
        // 设置 PDF 页面自适应
        wb.getConverterSetting().setSheetFitToPage(true);
        
        // 获取第一个工作表
        Worksheet sheet = wb.getWorksheets().get(0);
        
        // 自动调整列宽
        for (int i = 1; i < sheet.getColumns().length; i++) {
            sheet.autoFitColumn(i);
        }
        
        // 保存为 PDF
        sheet.saveToPdf("toPDF.pdf");
        
        System.out.println("PDF 已生成：toPDF.pdf");
    }
}

import com.spire.xls.*;

Workbook wb = new Workbook();
wb.loadFromFile("Sample.csv", ",");

Worksheet sheet = wb.getWorksheets().get(0);
CellRange range = sheet.getRange("A1:C10");

// 设置字体加粗和字号
range.getStyle().getFont().setBold(true);
range.getStyle().getFont().setSize(12);

// 添加边框和背景颜色
range.getStyle().getBorders().setAllBorders(BorderLineStyle.Thin);
range.getStyle().setColor(java.awt.Color.LIGHT_GRAY);

sheet.saveToPdf("styled_output.pdf");

import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;
import java.io.File;

public class BatchCsvToPdf {
    public static void main(String[] args) {
        String inputDir = "csv_files";
        String outputDir = "pdf_files";
        new File(outputDir).mkdirs();

        File folder = new File(inputDir);
        for (File csvFile : folder.listFiles((d, name) -> name.endsWith(".csv"))) {
            Workbook wb = new Workbook();
            wb.loadFromFile(csvFile.getAbsolutePath(), ",");
            wb.getConverterSetting().setSheetFitToPage(true);

            Worksheet sheet = wb.getWorksheets().get(0);
            for (int i = 1; i < sheet.getColumns().length; i++) {
                sheet.autoFitColumn(i);
            }

            String pdfFile = outputDir + "/" + csvFile.getName().replace(".csv", ".pdf");
            sheet.saveToPdf(pdfFile);
        }

        System.out.println("批量 CSV 转 PDF 完成！");
    }
}