Java PDF添加附件

短命女 2022-01-29 14:04 326阅读 0赞

Free-Spire-PDF-API地址: [http://www.e-iceblue.cn/Introduce/Free-Spire-PDF-JAVA.html][http_www.e-iceblue.cn_Introduce_Free-Spire-PDF-JAVA.html]

pom.xml maven依赖导入

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.5.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.design.patterns</groupId>
        <artifactId>design-patterns</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>design-patterns</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <repositories>
            <repository>
                <id>com.e-iceblue</id>
                <name>e-iceblue</name>
                <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
            </repository>
        </repositories>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itextpdf</artifactId>
                <version>5.4.3</version>
            </dependency>
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itext-asian</artifactId>
                <version>5.2.0</version>
            </dependency>
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itext-xtra</artifactId>
                <version>5.5.13</version>
            </dependency>
    
            <dependency>
                <groupId>e-iceblue</groupId>
                <artifactId>spire.pdf.free</artifactId>
                <version>2.2.2</version>
            </dependency>
    
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

代码

package com.design.patterns.designpatterns.pdf;
    
    import com.spire.pdf.PdfDocument;
    import com.spire.pdf.annotations.*;
    import com.spire.pdf.attachments.PdfAttachment;
    import com.spire.pdf.graphics.*;
    
    import java.awt.*;
    import java.awt.geom.Dimension2D;
    import java.awt.geom.Rectangle2D;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    
    public class AttachFiles {
    
        static String src = "E:\\pdf\\qqq.pdf";     // 原文件
        static String dest = "E:\\pdf\\ccc.pdf";    // 最终文件
        static String att = "E:\\pdf\\666.mp4";     // 附件
        static String desc = "附件";                 // 附件注释
    
        public static void main(String[] args) throws IOException {
    
            //创建PdfDocument对象
            PdfDocument doc = new PdfDocument();
    
            //加载PDF文档
            doc.loadFromFile(src);
    
            //添加附件到PDF
            PdfAttachment attachment = new PdfAttachment(att);
            attachment.setDescription(desc);
            doc.getAttachments().add(attachment);
    
            int count = doc.getPages().getCount() - 1;
    
            //绘制标签
            String label = "视频.mp4";
            PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Arial Unicode MS",Font.PLAIN,12),true);
            double x = 35;
            double y = doc.getPages().get(count).getActualSize().getHeight() - 800;
            doc.getPages().get(count).getCanvas().drawString(label, font, PdfBrushes.getOrange(), x, y);
    
            //添加注释附件到PDF
            String filePath = att;
            byte[] data = toByteArray(filePath);
            Dimension2D size = font.measureString(label);
            Rectangle2D bound = new Rectangle2D.Float((float) (x + size.getWidth() + 2), (float) y, 10, 15);
            PdfAttachmentAnnotation annotation = new PdfAttachmentAnnotation(bound, filePath, data);
            annotation.setColor(new PdfRGBColor(new Color(0, 128, 128)));
            annotation.setFlags(PdfAnnotationFlags.Default);
            annotation.setIcon(PdfAttachmentIcon.Graph);
            annotation.setText("双击打开文件");
            doc.getPages().get(0).getAnnotationsWidget().add(annotation);
    
            //保存文档
            doc.saveToFile(dest);
        }
    
        //读取文件到byte数组
        public static byte[] toByteArray(String filePath) throws IOException {
    
            File file = new File(filePath);
            long fileSize = file.length();
            if (fileSize > Integer.MAX_VALUE) {
                System.out.println("file too big...");
                return null;
            }
            FileInputStream fi = new FileInputStream(file);
            byte[] buffer = new byte[(int) fileSize];
            int offset = 0;
            int numRead = 0;
            while (offset < buffer.length
                    && (numRead = fi.read(buffer, offset, buffer.length - offset)) >= 0) {
                offset += numRead;
            }
    
            if (offset != buffer.length) {
                throw new IOException("Could not completely read file "
                        + file.getName());
            }
            fi.close();
            return buffer;
        }
    }

效果:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdTkxMTAyNQ_size_16_color_FFFFFF_t_70][]

GitHup: [https://github.com/liu911025/pdf-addAttachments/tree/master][https_github.com_liu911025_pdf-addAttachments_tree_master]

[http_www.e-iceblue.cn_Introduce_Free-Spire-PDF-JAVA.html]: http://www.e-iceblue.cn/Introduce/Free-Spire-PDF-JAVA.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdTkxMTAyNQ_size_16_color_FFFFFF_t_70]: /images/20220129/17e11a46a56a4f149143001f47b398fe.png
[https_github.com_liu911025_pdf-addAttachments_tree_master]: https://github.com/liu911025/pdf-addAttachments/tree/master