从我们的Java程序执行Java程序 [英] Execute a Java program from our Java program

问题描述

我用过

Runtime.getRuntime().exec("_____")

但它会抛出 IOException ，如下所示：

but it throws a IOException as below:

java.io.IOException: CreateProcess: c:/ error=5
  at java.lang.Win32Process.create(Native Method)
  at java.lang.Win32Process.<init>(Win32Process.java:63)
  at java.lang.Runtime.execInternal(Native Method

我不知道在指定路径或其他方面是否有问题。任何人都可以帮我解释代码。

I don't know whether I have the problem with specifying the path or something else. Can anyone please help me with the code.

推荐答案

您正在尝试执行C：/。您需要执行以下操作：

You're trying to execute "C:/". You'll want to execute something like:

javaw.exe d：\\somejavaprogram\\ program.jar

注意路径分隔符。

我假设这是一个特别的项目，而不是大的。但是，从代码运行外部程序的最佳实践：

I'm assuming this is for an ad-hoc project, rather than something large. However, for best practice running external programs from code:

• 不要硬编码可执行文件位置，除非你确定它永远不会改变


• 看看像％windir％这样的目录使用System.getenv


• 不要假设像javaw.exe这样的程序在搜索路径中：首先检查它们，或者允许用户指定位置my program.jar。

• Don't hardcode the executable location, unless you're certain it will never change
• Look up directories like %windir% using System.getenv
• Don't assume programs like javaw.exe are in the search path: check them first, or allow the user to specify a location
• Make sure you're taking spaces into account: "cmd /c start " + myProg will not work if myProg is "my program.jar".

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