Java开发微信dat文件解析工具，android原生开发笔记应用
//保存路径（输出）
String savePath=“C:\Users\Administrator\Desktop”;
//开始解析
convert(wxPath, savePath);
/**
@param path 图片目录地址
@param targetPath 转换后目录
*/
private void convert(String path, String targetPath) {
File[] file = new File(path).listFiles();
if (file == null) {
return;
}
int size = file.length;
txtArea_log.append(“总共” + size + “个文件\r\n”);
AtomicReference integer = new AtomicReference<>(0);
AtomicInteger x
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= new AtomicInteger();
for (File file1 : file) {
if (file1.isFile()) {
Object[] xori = getXor(file1);
if (xori != null && xori[1] != null){
x.set((int)xori[1]);
}
break;
}
}
Arrays.stream(file).parallel().forEach(file1 -> {
if (file1.isDirectory()) {
String[] newTargetPath = file1.getPath().split("/|\ ");
File targetFile = new File(targetPath+File.separator+newTargetPath[newTargetPath.length - 1]);
if (!targetFile.exists()) {
targetFile.mkdirs();
}
convert(file1.getPath(),targetPath+File.separator+newTargetPath[newTargetPath.length - 1]);
return;
}
Object[] xor = getXor(file1);
if (x.get() == 0 && xor[1] != null && (int) xor[1] != 0) {
x.set((int) xor[1]);
}
xor[1] = xor[1] == null ? x.get() : xor[1];
try (InputStream reader = new FileInputStream(file1);
OutputStream writer =
new FileOutputStream(targetPath + File.separator + file1.getName().split(".")[0] + (xor[0] != null ?
“.” + xor[0] : “”))) {
byte[] bytes = new byte[1024 * 10];
int b;
while ((b = reader.read(bytes)) != -1) {//这里的in.read(bytes);就是把输入流中的东西，写入到内存中（bytes）。
for (int i = 0; i < bytes.length; i++) {
bytes[i] = (byte) (int) (bytes[i] ^ (int) xor[1]);
if (i == (b - 1)) {
break;
}
}
writer.write(bytes, 0, b);
writer.flush();
}
integer.set(integer.get() + 1);
txtArea_log.append(file1.getName() + “(大小:” + ((double) file1.length() / 1000) + “kb,异或值:” + xor[1] + “),” +“进度：” + integer.get() + “/” + size+"\r\n");
} catch (Exception e) {
e.printStackTrace();
}
});
txtArea_log.append(“解析完毕！\r\n”);
}
/**
判断图片异或值
@param file
@return
*/
private static Object[] getXor(File file) {
Object[] xor = null;
if (file != null) {
byte[] bytes = new byte[4];
try (InputStream reader = new FileInputStream(file)) {
reader.read(bytes, 0, bytes.length);
} catch (Exception e) {
e.printStackTrace();
}
xor = getXor(bytes);
}
return xor;
}
/**
@param bytes
@return
*/
private static Object[] getXor(byte[] bytes) {
Object[] xorType = new Object[2];
int[] xors = new int[3];
for (Map.Entry<String, String> type : FILE_TYPE_MAP.entrySet()) {
String[] hex = {
String.valueOf(type.getKey().charAt(0)) + type.getKey().charAt(1),
String.valueOf(type.getKey().charAt(2)) + type.getKey().charAt(3),
String.valueOf(type.getKey().charAt(4)) + type.getKey().charAt(5)
};
xors[0] = bytes[0] & 0xFF ^ Integer.parseInt(hex[0], 16);
xors[1] = bytes[1] & 0xFF ^ Integer.parseInt(hex[1], 16);
xors[2] = bytes[2] & 0xFF ^ Integer.parseInt(hex[2], 16);
if (xors[0] == xors[1] && xors[1] == xors[2]) {
xorType[0] = type.getValue();
xorType[1] = xors[0];
break;
}
}
return xorType;
}
private final static Map<String, String> FILE_TYPE_MAP = new HashMap<String, String>();
private JButton btn_open_wxpath;
private final JButton btn_open_savepath = new JButton("");
static {
getAllFileType();
}
private static void getAllFileType() {
FILE_TYPE_MAP.put(“ffd8ffe000104a464946”, “jpg”); //JPEG (jpg)
FILE_TYPE_MAP.put(“89504e470d0a1a0a0000”, “png”); //PNG (png)
FILE_TYPE_MAP.put(“47494638396126026f01”, “gif”); //GIF (gif)
FILE_TYPE_MAP.put(“49492a00227105008037”, “tif”); //TIFF (tif)
FILE_TYPE_MAP.put(“424d228c010000000000”, “bmp”); //16色位图(bmp)
FILE_TYPE_MAP.put(“424d8240090000000000”, “bmp”); //24位位图(bmp)
FILE_TYPE_MAP.put(“424d8e1b030000000000”, “bmp”); //256色位图(bmp)
FILE_TYPE_MAP.put(“41433130313500000000”, “dwg”); //CAD (dwg)
FILE_TYPE_MAP.put(“3c21444f435459504520”, “html”); //HTML (html)
FILE_TYPE_MAP.put(“3c21646f637479706520”, “htm”); //HTM (htm)
FILE_TYPE_MAP.put(“48544d4c207b0d0a0942”, “css”); //css
FILE_TYPE_MAP.put(“696b2e71623d696b2e71”, “js”); //js
FILE_TYPE_MAP.put(“7b5c727466315c616e73”, “rtf”); //Rich Text Format (rtf)
FILE_TYPE_MAP.put(“38425053000100000000”, “psd”); //Photoshop (psd)
FILE_TYPE_MAP.put(“46726f6d3a203d3f6762”, “eml”); //Email [Outlook Express 6] (eml)