如何删除目录文件而不是文件夹 [英] How to delete files of a directory but not the folders

问题描述

我已经创建了一些代码，可以删除文件夹中的所有文件，但问题是，这很不错，我希望能够删除目录中的所有文件，但保留文件夹的完整性，因此我不必进入每个文件夹并删除其中的文件，这是我当前的代码：

I have create some code that deletes all the files in a folder, the issue is while this is great, I want to be able to delete all the files in a directory but leave the folders intact, so I do not have to go into each folder and delete the files in it, this is my current code :

@ViewScoped
@ManagedBean
public class Delete {

    public void DeleteFiles() throws IOException {
        System.out.println("Called deleteFiles");
        File file = new File("D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/up617648/");

        String[] myFiles;
        if (file.isDirectory()) {
            myFiles = file.list();
            for (int i = 0; i < myFiles.length; i++) {
                File myFile = new File(file, myFiles[i]);
                System.out.println(myFile);
                myFile.delete();
            }
            DeleteFiles2();
        }

    }
    public void DeleteFiles2() throws IOException {
        System.out.println("Called deleteFiles2");
        File file = new File("D:/Documents/NetBeansProjects/printing~subversion/fileupload/Uploaded/up617648/");

        String[] myFiles;
        if (file.isDirectory()) {
            myFiles = file.list();
            for (int i = 0; i < myFiles.length; i++) {
                File myFile = new File(file, myFiles[i]);
                System.out.println(myFile);
                myFile.delete();
            }
        }

    }
}

如何修改代码以实现此目标？

How could I modify my code to achieve this aim?

编辑：

我更改了我的代码代码到：

I have changed my code to :

@ViewScoped
@ManagedBean
public class Delete {

    public void DeleteFiles() throws IOException {
        System.out.println("Called deleteFiles");
        File file = new File("D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/");

        String[] myFiles;
        if (file.isDirectory()) {
            myFiles = file.list();
            for (int i = 0; i < myFiles.length; i++) {
                File myFile = new File(file, myFiles[i]);
                System.out.println(myFile);
               if (!myFile.isDirectory()) {
                    myFile.delete();
                }
            }
            DeleteFiles2();
        }

    }

文件夹，这是我的控制台：

And while this does call all the folders, this is my console:

INFO: Called deleteFiles
INFO: D:\Documents\NetBeansProjects\printing~subversion\fileupload\web\resources\pdf\cam01342
INFO: D:\Documents\NetBeansProjects\printing~subversion\fileupload\web\resources\pdf\geg00061
INFO: D:\Documents\NetBeansProjects\printing~subversion\fileupload\web\resources\pdf\null
INFO: D:\Documents\NetBeansProjects\printing~subversion\fileupload\web\resources\pdf\up617648
INFO: D:\Documents\NetBeansProjects\printing~subversion\fileupload\web\resources\pdf\up626088
INFO: Called deleteFiles2

Tt不会删除其中的文件文件夹，我该怎么办？

Tt does not delete the files inside these folders, how can I do this?

编辑3：使用递归，我现在遇到了堆栈溢出错误。

EDIT 3: Using recursion I am now getting a stack overflow error.

这是我的代码：

public void DeleteFiles() {
    File file = new File("D:/Documents/NetBeansProjects/printing~subversion/fileupload/web/resources/pdf/");
    System.out.println("Called deleteFiles");
    if (file.isDirectory()) {
        for (File f : file.listFiles()) {
            DeleteFiles();
        }
    } else {
        file.delete();
    }
}

推荐答案

为什么

if (!myFile.isDirectory()) myFile.delete();

而不是

myFile.delete();

？

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