本文将介绍如何在Java应用程序中打印PDF文档。一般有以下三种打印方式：

• 静默打印

• 显示打印对话框打印

• 打印PDF时自定义纸张大小

使用工具：Free Spire.PDF for Java

创建运行环境：

方式 1： 通过官网下载组件，解压后将lib文件夹下的Spire.Pdf.jar手动导入IDEA中。具体步骤可参考下图。

方式 2：通过Maven仓库安装产品及导入相关依赖包。在pom.xml文件中配置Maven仓库路径，及指定Free Spire.PDF for Java的Maven依赖。

<repositories>
<repository>
<id>com.e-iceblue</id>
<url>http://repo.e-iceblue.cn/repository/maven-public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.pdf.free</artifactId>
<version>2.6.3</version>
</dependency>
</dependencies>

配置完成后，在IDEA中，您只需点击"Import Changes"即可导入JAR包；在Eclipse中，则需点击"Save"按钮。

代码示例

• 静默打印

import com.spire.pdf.*;
import java.awt.print.*;

public class Print {
    public static void main(String[] args) {
        //加载文档
        PdfDocument pdf = new PdfDocument();
        pdf.loadFromFile("C:\\Users\\Test1\\Desktop\\Sample.pdf");
   
     PrinterJob loPrinterJob = PrinterJob.getPrinterJob();
        PageFormat loPageFormat  = loPrinterJob.defaultPage();
        Paper loPaper = loPageFormat.getPaper();

        //删除默认页边距
        loPaper.setImageableArea(0,0,loPageFormat.getWidth(),loPageFormat.getHeight());

        //设置打印份数
        loPrinterJob.setCopies(2);

        loPageFormat.setPaper(loPaper);
        loPrinterJob.setPrintable(pdf,loPageFormat);
        try {
            loPrinterJob.print();
        } catch (PrinterException e) {
            e.printStackTrace();
        }
    }
}

• 显示打印对话框打印PDF文档

import com.spire.pdf.*;
import java.awt.print.*;

public class Print {
    public static void main(String[] args) {
        //加载文档
        PdfDocument pdf = new PdfDocument();
        pdf.loadFromFile("C:\\Users\\Test1\\Desktop\\Sample.pdf");

        PrinterJob loPrinterJob = PrinterJob.getPrinterJob();
        PageFormat loPageFormat  = loPrinterJob.defaultPage();
        Paper loPaper = loPageFormat.getPaper();

        //删除默认页边距
        loPaper.setImageableArea(0,0,loPageFormat.getWidth(),loPageFormat.getHeight());

        loPageFormat.setPaper(loPaper);
        loPrinterJob.setPrintable(pdf,loPageFormat);

        //显示打印对话框
        if (loPrinterJob.printDialog()) {
            try {
                loPrinterJob.print();
            } catch (PrinterException e) {
                e.printStackTrace();
            }
        }
    }
}

• 打印时自定义纸张大小

import com.spire.pdf.*;
import java.awt.print.*;

public class Print {
    public static void main(String[] args) {
        //加载文档
        PdfDocument pdf = new PdfDocument();
        pdf.loadFromFile("C:\\Users\\Test1\\Desktop\\Sample.pdf");

        PrinterJob loPrinterJob = PrinterJob.getPrinterJob();
        PageFormat loPageFormat  = loPrinterJob.defaultPage();

        //设置打印纸张大小
        Paper loPaper = loPageFormat.getPaper();
        loPaper.setSize(500,600);
        loPageFormat.setPaper(loPaper);
        loPrinterJob.setPrintable(pdf,loPageFormat);

        try {
            loPrinterJob.print();
        } catch (PrinterException e) {
            e.printStackTrace();
        }
    }
}