Java借助Spire.PDF for Java高效实现PDF自动排版

<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.pdf</artifactId>
        <version>11.12.16</version>
    </dependency>
</dependencies>

import com.spire.pdf.graphics.*;
 
import java.awt.*;
 
public class AlignText {
 
    public static void main(String[] args) {
 
        //创建PdfDocument对象
        PdfDocument doc = new PdfDocument();
        
        //添加一页
        PdfPageBase page = doc.getPages().add();
 
        //创建CJK字体
        PdfCjkStandardFont cjkFont = new PdfCjkStandardFont(PdfCjkFontFamily.Sino_Type_Song_Light, 15f);
 
        //创建画刷
        PdfSolidBrush brush = new PdfSolidBrush(new PdfRGBColor(Color.black));
 
        //使用PdfStringFormat创建左对齐
        PdfStringFormat leftAlignment = new PdfStringFormat(PdfTextAlignment.Left);
        
        //使用drawSting方法绘制文字，并在方法中传入左对齐参数
        page.getCanvas().drawString("靠左", cjkFont , brush, 0, 20, leftAlignment);
 
        //绘制右对齐文字
        PdfStringFormat rightAlignment = new PdfStringFormat(PdfTextAlignment.Right);
        page.getCanvas().drawString("靠右", cjkFont , brush, page.getCanvas().getClientSize().getWidth(), 20, rightAlignment);
 
        //绘制居中文字
        PdfStringFormat centerAlignment = new PdfStringFormat(PdfTextAlignment.Center);
        page.getCanvas().drawString("居中", cjkFont , brush, page.getCanvas().getClientSize().getWidth() / 2, 20, centerAlignment);
 
        //保存文档
        doc.saveToFile("AlignText.pdf");
    }
}

import com.spire.pdf.graphics.*;
 
import java.awt.*;
import java.awt.geom.Rectangle2D;
 
public class AlignTextWithinRectangle {
 
    public static void main(String[] args) {
 
        //创建PdfDocument对象
        PdfDocument doc = new PdfDocument();
        
        //添加一页
        PdfPageBase page = doc.getPages().add();
 
        //创建CJK字体
        PdfCjkStandardFont cjkFont = new PdfCjkStandardFont(PdfCjkFontFamily.Sino_Type_Song_Light, 15f);
        
        //创建画笔
        PdfPen pen = new PdfPen(new PdfRGBColor(Color.black));
        
        //创建画刷
        PdfSolidBrush brush = new PdfSolidBrush(new PdfRGBColor(Color.black));
 
        //在PDF中绘制一个矩形
        Rectangle2D.Float rect = new Rectangle2D.Float();
        rect.setRect(0, 20, page.getCanvas().getClientSize().getWidth() / 2, 100);
        page.getCanvas().drawRectangle(pen, rect);
 
        //使用PdfSringFormat创建左上对齐
        PdfStringFormat topLeft = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Top);
        
        //使用drawSting方法绘制文字，并在方法中传入左上对齐参数
        page.getCanvas().drawString("左上", cjkFont, brush, rect, topLeft);
 
        //同理，绘制右上对齐文字
        PdfStringFormat topRight = new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Top);
        page.getCanvas().drawString("右上", cjkFont, brush, rect, topRight);
 
        //绘制居中文字
        PdfStringFormat center = new PdfStringFormat(PdfTextAlignment.Center, PdfVerticalAlignment.Middle);
        page.getCanvas().drawString("居中", cjkFont, brush, rect, center);
 
        //绘制左下对齐文字
        PdfStringFormat bottomLeft = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Bottom);
        page.getCanvas().drawString("左下", cjkFont, brush, rect, bottomLeft);
 
        //绘制右下对齐文字
        PdfStringFormat bottomRight = new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Bottom);
        page.getCanvas().drawString("右下", cjkFont, brush, rect, bottomRight);
 
        //保存文档
        doc.saveToFile("AlignTextWithinRectangle.pdf");
    }
}