java实现文件名以文件夹名开头

实现效果：

 

Java代码：

package com.binchi.test;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;


public class Test extends JFrame {
	JTextField textFile;
	int m;
	public static void main(String[] args) {
		Test test=new Test();
	}
	public Test() {
		this.setTitle("更换文件名");
		this.add(mainPanel());
		this.setBounds(500, 200, 500, 100);
		this.setVisible(true);
		this.setResizable(false);
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
	}
	public JPanel mainPanel() {
		JPanel panel = new JPanel();
		JButton btn=new JButton("OK");
		textFile = new JTextField("输入目录,支持修改png|jpg|jpeg|gif格式", 30);
		panel.add(textFile);
		btn.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				String nFilePath;
				m=0;
				if(textFile.getText().trim().contains("/")||textFile.getText().trim().contains("\\")) {
					nFilePath=textFile.getText().trim();
					textFile.setText("正在寻找路径");
				}else {
					nFilePath="./测试";
					textFile.setText("检查路径");
				}
				changeFileName(nFilePath);
			}
		});
		panel.add(btn);
		return panel;
	}
	
	private void changeFileName(String filePath_first){
		String[] folderSize = new String[5];
		String folder = null;
		File file_second = null;
		File fileFolder = null;
		File absPath;
		File replaceAbsFile = null;
		String replaceReName;
		String replaceAbsName;
		String oldAbsName = null;
		String fileName = null;
		List<String> fileFolderList = new ArrayList<String>();
		List<String> unUseFolderList = new ArrayList<String>();
		if(filePath_first=="./测试") {//生成文件夹 测试用
			File fileDir = new File(filePath_first);
			if (!fileDir.exists()) {
				fileDir.mkdir();
			}
			textFile.setText("请检查路径,建立测试文件夹");
			for (int i = 0; i < folderSize.length; i++) {
				folder = 2019071800 + i + "_";
				fileFolder = new File(filePath_first + "/" + folder);
				if (!fileFolder.exists()) {
					fileFolder.mkdir();
					fileFolderList.add(fileFolder.getAbsolutePath());
				} else {
					fileFolderList.add(fileFolder.getAbsolutePath());
					// System.out.println(fileFolder.getAbsolutePath());
				}
			}
		}else {//正常使用 
			fileFolder = new File(filePath_first);
			if (fileFolder.exists()) {
			for (int i = 0; i < fileFolder.listFiles().length; i++) {
				fileFolderList.add(fileFolder.listFiles()[i].getAbsolutePath());
			}
			}else {
				textFile.setText("路径不存在");
				return;
			}
		}
		//便利文件夹
		int k = 1;
		for (int i = 0; i < fileFolderList.size(); i++) {
			file_second = new File(fileFolderList.get(i));
			//if(file_second.isDirectory()) {
			//文件夹下文件
			if(file_second.isDirectory()) {//如果是目录
			
			//获取目录下所有子文件和子目录
			File[] file = file_second.listFiles();
			//遍历所有目录和文件
			int d=1;
			for (int j = 0; j < file.length; j++) {
				if(file[j].isFile()) {//如果是文件
					oldAbsName = file_second.getAbsolutePath() + "\\" + file[j].getName();
					System.out.println("是文件"+oldAbsName);
					if (file[j].getName().endsWith("png")||file[j].getName().endsWith("jpg")||file[j].getName().endsWith("jpeg")||file[j].getName().endsWith("gif")) {
						System.out.println("原文件绝对路径"+oldAbsName);
						absPath = new File(oldAbsName);
						replaceReName = fileFolderList.get(i).substring(fileFolderList.get(i).lastIndexOf("\\") + 1,fileFolderList.get(i).length());
						fileName=file[j].getName().substring(file[j].getName().lastIndexOf(".")+1, file[j].getName().length());
						replaceAbsName = fileFolderList.get(i) + "\\" + replaceReName +d+++"."+fileName;
						System.out.println("替换文件的绝对路径"+replaceAbsName);
						replaceAbsFile=new File(replaceAbsName);
						if(absPath.compareTo(replaceAbsFile)!=0) {
						if (absPath.renameTo(replaceAbsFile)) {
							m++;
							System.out.println("修改文件名成功");
							textFile.setText("当前至"+oldAbsName+","+m+"个文件修改成功");
						}
						}
					}
				}else if(file[j].isDirectory()) {//如果是目录 就 递归找文件
					System.out.println("是目录"+file_second.getAbsolutePath());
					unUseFolderList.add(file_second.getAbsolutePath());
				}
				
			}
			}else if(file_second.isFile()){//如果是文件
				if (file_second.getName().endsWith("png")||file_second.getName().endsWith("jpg")||file_second.getName().endsWith("jpeg")||file_second.getName().endsWith("gif")) {
				String parentPath=file_second.getParent();
			    folder=file_second.getParent().substring(parentPath.lastIndexOf("\\")+1, parentPath.length());
			    oldAbsName=file_second.getAbsolutePath();
			    System.out.println("原文件绝对路径"+oldAbsName);
			    fileName=file_second.getName().substring(file_second.getName().lastIndexOf(".")+1, file_second.getName().length());
			    replaceAbsName = parentPath + "\\" + folder +k+++"."+fileName;
				System.out.println("替换文件的绝对路径"+replaceAbsName);
				replaceAbsFile=new File(replaceAbsName);
				absPath = new File(oldAbsName);
				if(absPath.compareTo(replaceAbsFile)!=0) {
				if (absPath.renameTo(replaceAbsFile)) {
					m++;
					System.out.println("修改文件名成功");
					textFile.setText("当前至"+oldAbsName+","+m+"个文件修改成功");
				}
				}
				}
			}
		}
		if(!unUseFolderList.isEmpty()) {
			for (int j = 0; j < unUseFolderList.size(); j++) {
				System.out.println("目录");
				changeFileName(unUseFolderList.get(j));
			}
		}
	}
}