Wayne
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Java File类rename时的错误
Wayne
posted @ Tue, 11 May 2010 01:15:29 +0000
in Experience
, 6647 readers
前段时间准备把录音文件改名，很自然地，用到了File类里的renameTo方法。这个方法的用法遍地都是，无外乎如是：
File oldf=new File(oldpath);
File newf=new File(newpath);
if(oldf.exists){
if(oldf.renameTo(newf)){
Log.println("修改成功");
}else{
Log.println("修改失败");
}
}
但是，运行之后，发现全部都是修改失败。 上网找了下原因，有人列出renameTo失败的三种情况：
1.源文件不存在
2.目标文件存在
3.文件系统不对
当然，还有人补充了别的一些原因，比如没有修改权限等等。然而，这些对我的情况来说，都不成立。首先我是windows系统的administrator，不存在权限不足的问题；其次，我是在同一个分区的同一个文件夹里改名，也不存在磁盘分区问题；再次，源文件存在而目标文件不存在。这些可能的原因一个都不是，那到底问题出在哪呢？
这个折腾了我很久。直到有一天我想手动改名实验下的时候，发现症结所在了。我的newpath，也就是要改的名字，里面带了“*”号！！ 我原本是想用这个作为分隔符的，没想到这个恰好是windows禁用的符号……早知道如此，我直接用“#”号不就完了！！
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