检查文件是否已经打开 [英] Check if file is already open

问题描述

我需要写一个自定义的批处理文件重命名。我已经完成了大部分工作，除非我无法弄清楚如何检查文件是否已经打开。我只是使用 java.io.File 包，并有一个 canWrite（）方法，似乎测试该文件是否被另一个程序使用。任何想法，我怎么能做到这一点？

解决方案

使用Apache Commons IO库...

  boolean isFileUnlocked = false; 
尝试{
 org.apache.commons.io.FileUtils.touch（yourFile）; 
 isFileUnlocked = true; 
} catch（IOException e）{
 isFileUnlocked = false; 
 
 
 if（isFileUnlocked）{
 //做一些你需要做的事情，那就是不锁定的文件。 
} else {
 //做一些你需要处理的文件
 
 $ / code> 




I need to write a custom batch File renamer. I've got the bulk of it done except I can't figure out how to check if a file is already open. I'm just using the java.io.File package and there is a canWrite() method but that doesn't seem to test if the file is in use by another program. Any ideas on how I can make this work?

解决方案

Using the Apache Commons IO library...

boolean isFileUnlocked = false;
try {
    org.apache.commons.io.FileUtils.touch(yourFile);
    isFileUnlocked = true;
} catch (IOException e) {
    isFileUnlocked = false;
}

if(isFileUnlocked){
    // Do stuff you need to do with a file that is NOT locked.
} else {
    // Do stuff you need to do with a file that IS locked
}

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