package com.zdy.cn;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

public class Test {

    public static void main(String[] args)

        throws IOException {

        copy("C:/Users/gongsf/Desktop/1/1", "C:/Users/gongsf/Desktop/1/2"); // 这里写好源文件夹和目的文件夹

        System.out.println("ok");

    }

    private static void copy(String srcPath, String descPath)

        throws IOException {

        copy(new File(srcPath), new File(descPath));

    }

    private static void copy(File srcFile, File descFile)

        throws IOException {

        if (srcFile.isFile()) { // 文件

            File parent = descFile.getParentFile();

            if (!parent.exists()) {

                parent.mkdirs(); // 创建文件夹

            }

            if (srcFile.getName().endsWith(".java")) {

                copyJava(srcFile, descFile);

            } else {

                copyFile(srcFile, descFile);

            }

        } else { // 文件夹

            for (File file : srcFile.listFiles()) {

                // 相对路径

                String srcPath = file.getAbsolutePath().substring(

                    srcFile.getAbsolutePath().length());

                copy(file, new File(descFile.getAbsolutePath() + srcPath));

            }

        }

    }

    private static void copyJava(File srcFile, File descFile)

        throws IOException {

        BufferedWriter bw = new BufferedWriter(

            new OutputStreamWriter(new FileOutputStream(descFile)));

        BufferedReader br = new BufferedReader(

            new InputStreamReader(new FileInputStream(srcFile)));

        String line;

        while ((line = br.readLine()) != null) {

            bw.write(line.replaceFirst(".*/\\*(.*)\\*/", "")); // 注意这里，如果不行，要适当修改

            bw.write("\n");

        }

        br.close();

        bw.close();

    }

    private static void copyFile(File srcFile, File descFile)

        throws IOException {

        OutputStream output = new FileOutputStream(descFile);

        InputStream input = new FileInputStream(srcFile);

        byte[] buffer = new byte[1024 * 4];

        int n = 0;

        while ((n = input.read(buffer)) != -1) {

            output.write(buffer, 0, n);

        }

        input.close();

        output.close();

    }

}