更新:根据文件扩展名将文件从一个文件夹移动到另一个文件夹 [英] Update : Move files from one folder to another based on file extension

问题描述

情况:

我正在做一个自动化，我必须从一组文件中仅下载CSV文件.现在我只想将CSV文件从一个文件夹移动到另一个文件夹.

I am doing an automation where I have to download only CSV files from a set of files. And now i want to move only CSV files from one folder to another.

问题:

能否请您提供代码，以便在文件移动后立即从源文件夹中删除文件?

Can you please provide me code to delete files from the source folder as soon as the files are moved?

到目前为止，这是我的代码:

This is my code so far:

public class MyFilteredFileList {

    public static void main(String a[])

    {
        try {

        File source = new File("C:\\Users\\sh370472\\Downloads");
        File dest = new File("E:\\Query\\");

            FileUtils.copyDirectory(source, dest, new FileFilter() {

                @Override
                public boolean accept(File pathname) 
                {
                    boolean source=pathname.getName().toLowerCase().endsWith(".csv");
                    if (source)
                        return true;
                         return false;
                   }

            });
        } catch (IOException e) {
          e.printStackTrace();
        }
    }
}

但是我仍然面临一个问题.它会一次下载所有文件，然后删除.但是我的要求是这样的-它应该下载第一个文件->将下载的文件移到另一个文件夹中->从下载文件夹中删除第一个下载的文件->下载第二个文件夹...然后重复该过程

Edit : But I am still facing a problem. It's downloading all the files at once and then deleting. But my requirement is something like - It should download first file -> move the downloaded file into another folder -> delete first downloaded file from download folder -> download second folder... and the process repeats

推荐答案

只需添加pathname.deleteOnExit();在接受方法上

Just add pathname.deleteOnExit(); on accept method

@Override
 public boolean accept(File pathname) {
       boolean source = pathname.getName().toLowerCase().endsWith(".csv");

       if (source) {
           pathname.deleteOnExit();
           return true;
       }
   return false;
 }

整个代码:

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;

/**
 * Created by Lenovo on 02/12/2018.
 */
public class FileMove {
    public static void main(String a[])

    {
        try {

            File source = new File("C:\\Users\\sh370472\\Downloads");
            File dest = new File("E:\\Query\\");

            FileUtils.copyDirectory(source, dest, new FileFilter() {

                @Override
                public boolean accept(File pathname) {
                    boolean source = pathname.getName().toLowerCase().endsWith(".csv");

                    if (source) {
                        pathname.deleteOnExit();
                        return true;
                    }
                    return false;
                }

            });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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