Java – 将TXT文本文件转换为PDF文件

import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
import com.spire.pdf.graphics.*;
 
import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
 
public class ConvertTextToPdf {
    public static void main(String[] args) throws Exception {
        //从TXT文件读取文本
        String text = readTextFromFile("C:UsersAdministratorDesktop文本.txt");
 
        //创建PdfDocument类的对象
        PdfDocument pdf = new PdfDocument();
        //添加一个页面
        PdfPageBase page = pdf.getPages().add();
 
        //创建PdfFont类的对象
        Font font = new Font("宋体", Font.PLAIN, 11);
        PdfTrueTypeFont font1 = new PdfTrueTypeFont(font);
 
        //创建PdfTextLayout类的对象
        PdfTextLayout textLayout = new PdfTextLayout();
        textLayout.setBreak(PdfLayoutBreakType.Fit_Page);
        textLayout.setLayout(PdfLayoutType.Paginate);
 
        //创建PdfStringFormat类的对象
        PdfStringFormat format = new PdfStringFormat();
        format.setLineSpacing(20f);
 
        //用读取的文本创建PdfTextWidget类的对象
        PdfTextWidget textWidget = new PdfTextWidget(text, font1, PdfBrushes.getBlack());
        //设置字符格式
        textWidget.setStringFormat(format);
 
        //将文本添加到PDF页面的指定位置
        Rectangle2D.Float bounds = new Rectangle2D.Float();
        bounds.setRect(0,25,page.getCanvas().getClientSize().getWidth(),page.getCanvas().getClientSize().getHeight());
        textWidget.draw(page, bounds, textLayout);
 
        //保存结果文件
        pdf.saveToFile("TXT转PDF.pdf", FileFormat.PDF);
    }
    public static String readTextFromFile(String fileName) throws IOException {
        StringBuffer sb = new StringBuffer();
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        String content = null;
        while ((content = br.readLine()) != null) {
            sb.append(content);
            sb.append("n");
        }
        return sb.toString();
    }
}