java.awt.Desktop.open不能用于PDF文件？ [英] java.awt.Desktop.open doesn’t work with PDF files?

问题描述

看起来我无法在PDF文件上使用Desktop.open（），无论其位置如何。这是一个小测试程序：

It looks like I cannot use Desktop.open() on PDF files regardless of location. Here's a small test program:

package com.example.bugs;

import java.awt.Desktop;
import java.io.File;
import java.io.IOException;

public class DesktopOpenBug {
    static public void main(String[] args)
    {
        try {
            Desktop desktop = null;
            // Before more Desktop API is used, first check 
            // whether the API is supported by this particular 
            // virtual machine (VM) on this particular host.
            if (Desktop.isDesktopSupported()) {
                desktop = Desktop.getDesktop();
                for (String path : args)
                {
                    File file = new File(path);
                    System.out.println("Opening "+file);
                    desktop.open(file);
                }
            }           
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

如果我使用参数运行DesktopOpenBug c：\ tmp\zz1.txt c：\ tmp\zz.xml c：\ tmp \\\。pdf （我碰巧有3个档案我得到这个结果:( .txt和.xml文件打开正常）

If I run DesktopOpenBug with arguments c:\tmp\zz1.txt c:\tmp\zz.xml c:\tmp\ss.pdf (3 files I happen to have lying around) I get this result: (the .txt and .xml files open up fine)

Opening c:\tmp\zz1.txt
Opening c:\tmp\zz.xml
Opening c:\tmp\ss.pdf
java.io.IOException: Failed to open file:/c:/tmp/ss.pdf. Error message:
    The parameter is incorrect.

at sun.awt.windows.WDesktopPeer.ShellExecute(Unknown Source)
at sun.awt.windows.WDesktopPeer.open(Unknown Source)
at java.awt.Desktop.open(Unknown Source)
at com.example.bugs.DesktopOpenBug.main(DesktopOpenBug.java:21)

到底发生了什么事？我正在运行WinXP，我可以在命令提示符下输入c：\ tmp \\\。pdf并打开就好了。

What the heck is going on? I'm running WinXP, I can type "c:\tmp\ss.pdf" at the command prompt and it opens up just fine.

编辑：如果这是 Sun Java bug＃6764271 请投票帮助。多么痛苦。 > :(

edit: if this is an example of Sun Java bug #6764271 please help by voting for it. What a pain. >:(

推荐答案

我从来不知道这个桌面命令，直到最近通过这篇文章：

<如果Java的Runtime.getRuntime（）。exec（）在Windows 7上运行，那么这将是一个很好的例子。hps =https：//tackoverflow.com/questions/4571604/would-javas-runtime-getruntime-exec-run-on-windows-7> ？

I never knew about this Desktop command, untill recently through this post:
would Java's Runtime.getRuntime().exec() run on windows 7?

以前我一直在使用：

Runtime.getRuntime().exec("rundll32 SHELL32.DLL,ShellExec_RunDLL "+ myfile); 

它一直对我有用。如果你的方法不起作用，你可以考虑尝试这个命令。

And it has always worked for me. If your method does not work, may be you can think about try this command.

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