Android反编译助手

反编译后的资源在Java源码中被转化成10位的数字 如2131559100;

这10位数字对应的反编译资源”res/values/“下的”public.xml“中的十六进制。

该反编译助手是用来把反编译后的资源10位数字转化成对应的如“R.drawable.bg”。

package cn.android.find.main;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class FindReplace {

	public Map<String, String> resources = new HashMap<String, String>(); // key:id value:R.id.bg

	public static File xml = new File("D:/qq/public.xml");	//XML路径
	public static File file = new File("D:/qq/mobileqq.src");	//待替换的源码文件夹
	
	public static void main(String[] args) {
		long start = System.currentTimeMillis();
		FindReplace replace = new FindReplace();
		replace.findReplace(replace.findReplaceXml(xml), file);
		System.out.println("用时:" + (System.currentTimeMillis() - start));
	}
	
	/**
	 * 生成十六进制转成十进制的资源文件
	 * @param file
	 * @return
	 */
	public File findReplaceXml(File file) {
		FileReader fr = null;
		FileWriter fw = null;
		File fileTemp = new File(file.getParent(), "re"+file.getName());
		try {
			fr = new FileReader(file);
			
			fw = new FileWriter(fileTemp);

			BufferedReader bf = new BufferedReader(fr);
			String str = null;// 取一行
			while ((str = bf.readLine()) != null) { // 一行一行的读取全部内容
				// 显示行号
				int index = str.lastIndexOf("id=\"0x");
				if (index != -1) {
					index = index + 6;
					String s = str.substring(index, index + 8);
					str = str.replace("0x" + s, hexToDecimal(s));
				}
				fw.write(str);
				fw.write("\r\n");// 写入换行
			}
			fw.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return fileTemp;
	}
	
	/**
	 * 十六进制转成十进制
	 * @param hexString
	 * @return
	 */
	private static String hexToDecimal(String hexString) {
		BigInteger bi = null;
		bi = new BigInteger(hexString, 16);
		String show = bi.toString(10);
		return show;
	}

	/**
	 * 查找替换
	 * @param xml
	 * @param fileDir
	 */
	public void findReplace(File xml, File fileDir) {
		InputStream inStream = null;
		try {
			initMap(new FileInputStream(xml));
			findFileList(fileDir);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} finally {
			if (inStream != null)
				try {
					inStream.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
		}
	}
	
	/**
	 * 正则表达式查找替换
	 */
	private String matcher(String regex) {
		Matcher m = Pattern.compile("[0-9]\\d{9}").matcher(regex);
		while (m.find()) {
			String recource = resources.get(m.group());
			if(recource!=null){
				regex = regex.replaceAll(m.group(), recource);
			}
		}
		return regex;
	}
	
	/**
	 * 递归遍历目录文件
	 * 
	 * @param file
	 * @param resourceContent
	 * @param replaceContent
	 */
	public void findFileList(File file) {
		File[] files = file.listFiles();
		if (files == null) {
			return;
		}
		for (File f : files) {
			if (f.isDirectory()) {
				findFileList(f);
			} else {
				if (f.getName().endsWith(".java")) {
					transferFile(f); // 查找替换
				}
			}
		}
	}
	/**
	 * 保存到原文件
	 * @param file
	 */
	private void transferFile(File file) {
		try {
			FileReader reader = new FileReader(file);
			char[] dates = new char[1024];
			int count = 0;
			StringBuilder sb = new StringBuilder();
			while ((count = reader.read(dates)) > 0) {
				String str = String.valueOf(dates, 0, count);
				sb.append(str);
			}
			reader.close();
			// 从构造器中生成字符串，并替换搜索文本
			String fileContent = matcher(sb.toString());
			FileWriter writer = new FileWriter(file);
			writer.write(fileContent.toCharArray());
			writer.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 从流中初始化资源集合
	 *  // R.attr.name 2130771968
	 * @param inStream
	 */
	public void initMap(InputStream inStream) {
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		try {
			DocumentBuilder builder = factory.newDocumentBuilder();
			Document dom = builder.parse(inStream);
			Element root = dom.getDocumentElement();
			NodeList items = root.getElementsByTagName("public");// 查找所有person节点
			System.out.println("XML文件中有记录:" + items.getLength());
			for (int i = 0; i < items.getLength(); i++) {
				// 得到public节点
				Element publicNode = (Element) items.item(i);
				resources.put(publicNode.getAttribute("id"), "R." + publicNode.getAttribute("type") + "." + publicNode.getAttribute("name"));
			}
			System.out.println("添加记录："+resources.size());
			inStream.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

反编译工具：

      http://115.com/file/c2uwpkwp