如何使用jdk7移动目录

发布于 2024-11-13 04:37:23 字数 1260 浏览 5 评论 0原文

使用jdk7，我尝试使用java.nio.file.Files类移动一个空目录，比如说Bar，到另一个空目录，比如说Foo

Path source = Paths.get("Bar");
Path target = Paths.get("Foo");
try {
    Files.move(
        source,
        target,  
        StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

执行该代码片段后，我期望Bar 目录将位于 Foo 目录 (...\Foo\Bar) 中。相反，事实并非如此。更重要的是，它也被删除了。此外，没有抛出异常。

我这样做错了吗？

注意

我正在寻找特定于jdk7的解决方案。我也在研究这个问题，但我想我会看看是否有其他人在玩jdk7 。

编辑

除了接受的答案之外，这里还有另一个解决方案

Path source = Paths.get("Bar");
Path target = Paths.get("Foo");
try {
    Files.move(
    source,
    target.resolve(source.getFileName()),  
    StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

原文

Using jdk7, I am trying to use the java.nio.file.Files class to move an empty directory, let's say Bar, into another empty directory, let's say Foo

Path source = Paths.get("Bar");
Path target = Paths.get("Foo");
try {
    Files.move(
        source,
        target,  
        StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

After executing that code snippet, I expected that the Bar directory would be in the Foo directory (...\Foo\Bar). Instead it is not. And here's the kicker, it's been deleted as well. Also, no exceptions were thrown.

Am I doing this wrong?

NOTE

I'm looking for a jdk7-specific solution.I am also looking into the problem, but I figured I'd see if there was anyone else playing around with jdk7.

EDIT

In addition to the accepted answer, here's another solution

Path source = Paths.get("Bar");
Path target = Paths.get("Foo");
try {
    Files.move(
    source,
    target.resolve(source.getFileName()),  
    StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

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三生殊途 2024-11-20 04:37:23

我没有意识到 jdk7 java.nio.file.Files 是必需的，所以这里是编辑后的解决方案。请看看它是否有效，因为我以前从未使用过新的 Files 类。

Path source = Paths.get("Bar");
Path target = Paths.get("Foo", "Bar");
try {
    Files.move(
        source,
        target,  
        StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

I didn't realize jdk7 java.nio.file.Files is a necessity, so here is the edited solution. Please see if it works coz I have never used the new Files class before.

Path source = Paths.get("Bar");
Path target = Paths.get("Foo", "Bar");
try {
    Files.move(
        source,
        target,  
        StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
    e.printStackTrace();
}

回复收藏 0 原文

十二 2024-11-20 04:37:23

在 Files.move 方法的 javadoc 中，您将找到一个示例，它将文件移动到目录中，并保持相同的文件名。这似乎就是您正在寻找的。

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辞旧 2024-11-20 04:37:23

这是解决方案。

http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html
suppose we want to move a file to new directory, keeping the same file name, and replacing any existing file of that name in the directory:

Path source = ...
Path newdir = ...
Files.move(source, newdir.resolve(source.getFileName()), REPLACE_EXISTING);
//Files.move(source, newdir.resolve(source.getFileName()), StandardCopyOption.REPLACE_EXISTING);

Here is the solution.

Path source = ...
Path newdir = ...
Files.move(source, newdir.resolve(source.getFileName()), REPLACE_EXISTING);
//Files.move(source, newdir.resolve(source.getFileName()), StandardCopyOption.REPLACE_EXISTING);

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