如何在 Linux 上从 java 文件中执行可执行文件？
我正在尝试从 java 程序中执行可执行文件和 perl 脚本。我发现了很多与此类似的主题，但其中大多数都涉及 Windows。我知道java是独立于平台的，无论如何它都应该工作，但事实并非如此。我已经尝试过的解决方案是基于 java 运行时及其 exec 方法的解决方案。它在 Windows 上运行得很好，但由于我要将程序移植到 Linux 上，所以我需要对其进行调整。正如我所说，我需要执行一个我已经编译并用 C++ 编写的可执行文件，它看起来正在工作，但它以退出值 1 完成执行。我不知道这意味着什么，但在 Windows 上它以 0 退出Linux 上也应该如此（？！？！）。另一方面，珍珠脚本根本不启动。我使用命令“perl script.pl”，它以 255 的值退出。不用说，它没有做它应该做的事情。
有人知道执行这些文件的另一种方法吗？或者我的实施可能哪里出了问题？
如果您想看一下，这是代码： 这是 perl 脚本的脚本
public static void main(String[] args){
System.out.println("Starting");
try{
String[] cmd = {"perl", "cloc-1.53.pl"};
Process pr = Runtime.getRuntime().exec(cmd);
BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream()));
String line=null;
while((line=input.readLine()) != null) {
System.out.println(line);
}
int exitVal = pr.waitFor();
System.out.println("Exit code: " + exitVal);
} catch (Throwable t){
t.printStackTrace();
}
}
对于编译文件，我将其更改
String[] cmd = {"perl", "cloc-1.53.pl"};
为：
String cmd = "./UCC";
I am trying to execute an executable file and a perl script from within a java program. I have found many topics similar to this but most of them refer to windows. I know java is platform independent and it should work anyways but it doesn't. The solution I have tried already is the one based on the java Runtime and it's exec method. It works just fine on windows but since I'm porting my program on linux I need to adapt it. As I said I need to execute an executable file that I have compiled and was written in c++ which it looks like it's working but it finishes executing with an exit value of 1. I have no idea what it means but on windows it exits with 0 and that's how it should be on linux as well (?!?!). The pearl script on the other hand does not start at all. I use the command "perl script.pl" and it exits with a value of 255. Needless to say, it doesn't do what it's supposed to.
Does anybody know another way to execute these files? Or maybe where I am wrong with my implementation?
here's the code if you want to take a look at it:
This is the one for the perl script
public static void main(String[] args){
System.out.println("Starting");
try{
String[] cmd = {"perl", "cloc-1.53.pl"};
Process pr = Runtime.getRuntime().exec(cmd);
BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream()));
String line=null;
while((line=input.readLine()) != null) {
System.out.println(line);
}
int exitVal = pr.waitFor();
System.out.println("Exit code: " + exitVal);
} catch (Throwable t){
t.printStackTrace();
}
}
For the compiled file I change this:
String[] cmd = {"perl", "cloc-1.53.pl"};
with:
String cmd = "./UCC";
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Windows 和 Linux 上启动进程应该没有区别。
好文章 http://www.javaworld.com/javaworld /jw-12-2000/jw-1229-traps.html
它采用旧方法，但提供了很好的洞察力。
文章转换为新方式：
从 Runtime.exec() 到 ProcessBuilder
There should be no differece in starting processes on windows and linux.
Good article http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
Its for the old way but gives good insight.
Article converting to the new way:
From Runtime.exec() to ProcessBuilder