在本文中，我们向您展示了两种使用Java打开PDF文件的方法。

1. rundll32 – Windows平台解决方案

在Windows中，您可以使用“ rundll32 ”命令启动PDF文件，请参见示例：

package com.mkyong.jdbc;import java.io.File;//Windows solution to view a PDF file
public class WindowsPlatformAppPDF {public static void main(String[] args) {try {if ((new File("c:\\Java-Interview.pdf")).exists()) {Process p = Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler c:\\Java-Interview.pdf");p.waitFor();} else {System.out.println("File is not exists");}System.out.println("Done");} catch (Exception ex) {ex.printStackTrace();}}
}

2. Awt Desktop –跨平台解决方案

始终建议使用此Awt Desktop跨平台解决方案，因为它可在* nix，Windows和Mac平台上使用。

package com.mkyong.io;import java.awt.Desktop;
import java.io.File;//Cross platform solution to view a PDF file
public class AnyPlatformAppPDF {public static void main(String[] args) {try {File pdfFile = new File("c:\\Java-Interview.pdf");if (pdfFile.exists()) {if (Desktop.isDesktopSupported()) {Desktop.getDesktop().open(pdfFile);} else {System.out.println("Awt Desktop is not supported!");}} else {System.out.println("File is not exists!");}System.out.println("Done");} catch (Exception ex) {ex.printStackTrace();}}
}

参考

1. http://download.oracle.com/javase/6/docs/api/java/awt/Desktop.html

翻译自: https://mkyong.com/java/how-to-open-a-pdf-file-in-java/