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java取得快捷方式指向的路徑

www.myexceptions.net??網友分享于：2013-08-17??瀏覽：5次

java獲得快捷方式指向的路徑

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

/**

* 獲得快捷方式指向的路徑

* @author shk

*

*/

public class LnkParser {

public static void main(String[] args) throws Exception {

new LnkParser(new File("C://temps//config.text.lnk"));

}

public LnkParser(File f) throws Exception {

parse(f);

}

private boolean is_dir;

public boolean isDirectory() {

return is_dir;

}

private String real_file;

public String getRealFilename() {

return real_file;

}

private void parse(File f) throws Exception {

// read the entire file into a byte buffer

FileInputStream fin = new FileInputStream(f);

ByteArrayOutputStream bout = new ByteArrayOutputStream();

byte[] buff = new byte[256];

while (true) {

int n = fin.read(buff);

if (n == -1) {

break;

}

bout.write(buff, 0, n);

}

fin.close();

byte[] link = bout.toByteArray();

// get the flags byte

byte flags = link[0x14];

// get the file attributes byte

final int file_atts_offset = 0x18;

byte file_atts = link[file_atts_offset];

byte is_dir_mask = (byte) 0x10;

if ((file_atts & is_dir_mask) > 0) {

is_dir = true;

} else {

is_dir = false;

}

// if the shell settings are present, skip them

final int shell_offset = 0x4c;

final byte has_shell_mask = (byte) 0x01;

int shell_len = 0;

if ((flags & has_shell_mask) > 0) {

// the plus 2 accounts for the length marker itself

shell_len = bytes2short(link, shell_offset) + 2;

}

// get to the file settings

int file_start = 0x4c + shell_len;

// get the local volume and local system values

final int basename_offset_offset = 0x10;

final int finalname_offset_offset = 0x18;

int basename_offset = link[file_start + basename_offset_offset]

+ file_start;

int finalname_offset = link[file_start + finalname_offset_offset]

+ file_start;

String basename = getNullDelimitedString(link, basename_offset);

String finalname = getNullDelimitedString(link, finalname_offset);

real_file = basename + finalname;

System.out.println("快捷方式指向的文件路徑為："+real_file);

}

private static String getNullDelimitedString(byte[] bytes, int off) {

int len = 0;

// count bytes until the null character (0)

while (true) {

if (bytes[off + len] == 0) {

break;

}

len++;

}

return new String(bytes, off, len);

}

/*

* convert two bytes into a short note, this is little endian because it's

* for an Intel only OS.

*/

private static int bytes2short(byte[] bytes, int off) {

int n = 0;

for (int i = start, k = start + len % 5; i < k; i++) {

n += (bys[i] & 0xff) << (i * (8));

}

return n;

}

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