1.十六进制转图片jpg

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1.十六进制转图片jpg

[java] view plaincopyprint?

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* 十六进制转成图片
*/
public class Hex2Image
{
public static void main(String[] args) throws Exception
{
Hex2Image to = new Hex2Image();
InputStream is = new FileInputStream("V:/aaa.txt");
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String str = null;
StringBuilder sb = new StringBuilder();
while ((str = br.readLine()) != null)
{
System.out.println(str);
sb.append(str);
}
to.saveToImgFile(sb.toString().toUpperCase(), "V:/bbb.jpg");
}
public void saveToImgFile(String src, String output)
{
if (src == null || src.length() == 0)
{
return;
}
try
{
FileOutputStream out = new FileOutputStream(new File(output));
byte[] bytes = src.getBytes();
for (int i = 0; i < bytes.length; i += 2)
{
out.write(charToInt(bytes[i]) * 16 + charToInt(bytes[i + 1]));
}
out.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
private int charToInt(byte ch)
{
int val = 0;
if (ch >= 0x30 && ch <= 0x39)
{
val = ch - 0x30;
}
else if (ch >= 0x41 && ch <= 0x46)
{
val = ch - 0x41 + 10;
}
return val;
}
}

import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.InputStreamReader;/** * 十六进制转成图片 */public class Hex2Image{public static void main(String[] args) throws Exception{Hex2Image to = new Hex2Image();InputStream is = new FileInputStream("V:/aaa.txt");InputStreamReader isr = new InputStreamReader(is);BufferedReader br = new BufferedReader(isr);String str = null;StringBuilder sb = new StringBuilder();while ((str = br.readLine()) != null){System.out.println(str);sb.append(str);}to.saveToImgFile(sb.toString().toUpperCase(), "V:/bbb.jpg");}public void saveToImgFile(String src, String output){if (src == null || src.length() == 0){return;}try{FileOutputStream out = new FileOutputStream(new File(output));byte[] bytes = src.getBytes();for (int i = 0; i < bytes.length; i += 2){out.write(charToInt(bytes[i]) * 16 + charToInt(bytes[i + 1]));}out.close();}catch (Exception e){e.printStackTrace();}}private int charToInt(byte ch){int val = 0;if (ch >= 0x30 && ch <= 0x39){val = ch - 0x30;}else if (ch >= 0x41 && ch <= 0x46){val = ch - 0x41 + 10;}return val;}}

2.图片转成16进制

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import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
/**
* 图片转成十六进制
*/
public class ImageToHex
{
public static void main(String[] args) throws Exception
{
try
{
StringBuffer sb = new StringBuffer();
FileInputStream fis = new FileInputStream("V:/aaa.jpg");
BufferedInputStream bis = new BufferedInputStream(fis);
java.io.ByteArrayOutputStream bos = new java.io.ByteArrayOutputStream();
byte[] buff = new byte[1024];
int len = 0;
while ((len = fis.read(buff)) != -1)
{
bos.write(buff, 0, len);
}
// 得到图片的字节数组
byte[] result = bos.toByteArray();
System.out.println("++++" + byte2HexStr(result));
// 字节数组转成十六进制
String str = byte2HexStr(result);
/*
* 将十六进制串保存到txt文件中
*/
PrintWriter pw = new PrintWriter(
new FileWriter("V:/aaa.txt"));
pw.println(str);
pw.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
/*
* 实现字节数组向十六进制的转换方法一
*/
public static String byte2HexStr(byte[] b)
{
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++)
{
stmp = (Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1)
hs = hs + "0" + stmp;
else
hs = hs + stmp;
}
return hs.toUpperCase();
}
private static byte uniteBytes(String src0, String src1)
{
byte b0 = Byte.decode("0x" + src0).byteValue();
b0 = (byte) (b0 << 4);
byte b1 = Byte.decode("0x" + src1).byteValue();
byte ret = (byte) (b0 | b1);
return ret;
}
/*
* 实现字节数组向十六进制的转换的方法二
*/
public static String bytesToHexString(byte[] src)
{
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0)
{
return null;
}
for (int i = 0; i < src.length; i++)
{
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2)
{
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
}

import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;/** * 图片转成十六进制 */public class ImageToHex{public static void main(String[] args) throws Exception{try{StringBuffer sb = new StringBuffer();FileInputStream fis = new FileInputStream("V:/aaa.jpg");BufferedInputStream bis = new BufferedInputStream(fis);java.io.ByteArrayOutputStream bos = new java.io.ByteArrayOutputStream();byte[] buff = new byte[1024];int len = 0;while ((len = fis.read(buff)) != -1){bos.write(buff, 0, len);}// 得到图片的字节数组byte[] result = bos.toByteArray();System.out.println("++++" + byte2HexStr(result));// 字节数组转成十六进制String str = byte2HexStr(result);/* * 将十六进制串保存到txt文件中 */PrintWriter pw = new PrintWriter(new FileWriter("V:/aaa.txt"));pw.println(str);pw.close();}catch (IOException e){e.printStackTrace();}}/* * 实现字节数组向十六进制的转换方法一 */public static String byte2HexStr(byte[] b){String hs = "";String stmp = "";for (int n = 0; n < b.length; n++){stmp = (Integer.toHexString(b[n] & 0XFF));if (stmp.length() == 1)hs = hs + "0" + stmp;elsehs = hs + stmp;}return hs.toUpperCase();}private static byte uniteBytes(String src0, String src1){byte b0 = Byte.decode("0x" + src0).byteValue();b0 = (byte) (b0 << 4);byte b1 = Byte.decode("0x" + src1).byteValue();byte ret = (byte) (b0 | b1);return ret;}/* * 实现字节数组向十六进制的转换的方法二 */public static String bytesToHexString(byte[] src){StringBuilder stringBuilder = new StringBuilder("");if (src == null || src.length <= 0){return null;}for (int i = 0; i < src.length; i++){int v = src[i] & 0xFF;String hv = Integer.toHexString(v);if (hv.length() < 2){stringBuilder.append(0);}stringBuilder.append(hv);}return stringBuilder.toString();}}

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