关于绿盾解密功能java代码。

其实也就是个文件夹复制功能,解密前提需要绿盾支持该编程工具，在编程工具中运行该代码（其中原理自己去琢磨咯）。

<span style="font-size:14px;">package com.core;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.text.DecimalFormat;

/**
 * @Classname: Decrypt
 * @Description: TODO
 * @Author: chenn_xu@sina.cn
 * @Date: 2015年10月16日 上午11:04:32
 * @Version:V1.0
 */
public class Decrypt {
	
	
	//待解密的文件夹路径
	private static String rootFolderPath = getFullpath("E:","decrypt_dev");
	//待解密文件夹路径中的文件夹
	private static String replace = "decrypt_new";
	//被替换的文件夹
	private static String beReplaced = "decrypt_dev";
	
	//解密文件数
	private static Integer fileCount = 0;
	//解密文件大小
	private static Long fileSize = new Long(0);
	
	public static void main(String[] args) {
		try {
			Long startTime = System.currentTimeMillis();
			decryptFolder(new File(rootFolderPath));
			System.out.println("------------------------------------------------------------------------------------------------");
			System.out.print("解密完成,共计耗时："+new DecimalFormat("0.00").format((double)(System.currentTimeMillis()-startTime)/1000)+"s");
			System.out.print("\t共计文件："+fileCount+"个");
			System.out.print("\t共计文件大小："+new DecimalFormat(",##0.00").format((double)fileSize/1024/1024/1024)+"GB");
			System.out.print(" = "+new DecimalFormat(",##0.00").format((double)fileSize/1024/1024)+"mb");
			System.out.println(" = "+new DecimalFormat(",##0.00").format((double)fileSize/1024)+"kb");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * @Methodname: getFullpath 
	 * @Discription: TODO 拼接完整的路径  根据操作系统拼接连接符
	 * @param dir 路径
	 * @return
	 */
	private static String getFullpath(String... dir){
		StringBuffer fullPath = new StringBuffer("");
		for (int i = 0; i < dir.length; i++) {
			fullPath.append(dir[i]);
			if (dir.length-1!=i) {
				fullPath.append(File.separator);
			}
		}
		return fullPath.toString();
	}
	
	/**
	 * @Methodname: decryptFolder
	 * @Discription: TODO 解密整个文件夹
	 * @param folder 文件夹
	 * @throws Exception
	 */
	private static void decryptFolder(File folder)throws Exception {
		if (!folder.isDirectory()) {
			return;
		}
		File[] files = folder.listFiles();
		for (File file : files) {
			if (file.isFile()) {
				//进行解密操作
				decryptFile(file);
				fileCount ++;
				fileSize += file.length();
				continue ;
			}
			//创建文件夹
			File childFolder =new File(getFullpath(folder.getPath(),file.getName()));
			File newChilFolder =new File(childFolder.getPath().replaceFirst(beReplaced,replace));
			if (newChilFolder.exists()) {
				newChilFolder.delete();
			}
			newChilFolder.mkdir();
			//进行递归
			decryptFolder(childFolder);
		}
	}
	
	private static void decryptFile(File file){
		try {
	        File newFile = new File(file.getPath().replaceFirst(beReplaced,replace));
	        if (newFile.exists()) {
	        	newFile.delete();
			}
        	newFile.createNewFile();
	        FileOutputStream output = new FileOutputStream(newFile);
	        InputStream input = new FileInputStream(file);
	        int length = -1;
	        byte[] _byte = new byte[8000];
			System.out.println(file.getPath());
			int sum = input.available();
			System.out.print("文件名："+file.getPath());
			System.out.print("\t文件大小："+new DecimalFormat("0.00").format((double)file.length()/1024)+"kb");
			System.out.print("\t已解密大小："+new DecimalFormat("0.00").format((double)(file.length()-input.available())/1024)+"kb");
			System.out.println("\t已解密比例："+(sum==0?"100%":new DecimalFormat("0.00%").format((double)(sum-input.available())/sum))+"kb");
	        while ((length=input.read(_byte))!=-1) {
	        	System.out.print("文件名："+file.getPath());
				System.out.print("\t文件大小："+new DecimalFormat("0.00").format((double)file.length()/1024)+"kb");
				System.out.print("\t已解密大小："+new DecimalFormat("0.00").format((double)(file.length()-input.available())/1024)+"kb");
				System.out.println("\t已解密比例："+(sum==0?"100%":new DecimalFormat("0.00%").format((double)(sum-input.available())/sum)));
				output.write(_byte, 0, length);
			}
	        System.out.println();
	        input.close();
	        output.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
    }
}
</span>