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我正在写一个java程序,它在某个时候执行一个cmd文件。 两者都在相同的目录中。java执行cmd文件失败
我使用ProcessBuilder,因为它更灵活。 然而,当我运行此代码失败:
String current_directory = System.getProperty("user.dir");
ProcessBuilder builder=new ProcessBuilder(current_directory+"\\"+ "myCmdFile.cmd");
builder.directory(new File(current_directory));
File log = new File("log.txt");
builder.redirectErrorStream(true);
builder.redirectOutput(Redirect.appendTo(log));
Process process=builder.start();
process.waitFor();
System.out.println("CMD file executed");
我得到这个异常:
java.io.IOException: Cannot run program "C:\test\myCmdFile.cmd" (in directory "C:\test"): No such file or directory
at java.lang.ProcessBuilder.start(Unknown Source)
at org.java.test.executeCmdFile(MyMainClass.java:189)
at org.java.test.main(MyMainClass.java:70)
Caused by: java.io.IOException: No such file or directory
at java.lang.ProcessImpl.openForAtomicAppend(Native Method)
at java.lang.ProcessImpl.newFileOutputStream(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 3 more
然而,当我注释掉这些行比它的工作原理:
ProcessBuilder builder=new ProcessBuilder(current_directory+"\\"+
"myCmdFile.cmd");
//builder.directory(new File(current_directory));
//File log = new File("log.txt");
// builder.redirectErrorStream(true);
// builder.redirectOutput(Redirect.appendTo(log));
Process process=builder.start();
process.waitFor();
System.out.println("CMD file executed");
我需要这些行,因为我想有日志消息。
current_directory是否包含绝对路径? –
@亚历山大是啊,斯里,忘了那条线(我编辑了我的问题)。 – Norbert94
对不起,看起来我需要一杯咖啡。 – GhostCat