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943天前import java.io.BufferedReader; |
import java.io.ByteArrayInputStream; |
import java.io.File; |
import java.io.FileInputStream; |
import java.io.FileOutputStream; |
import java.io.InputStream; |
import java.io.InputStreamReader; |
import java.io.OutputStream; |
import java.nio.ByteBuffer; |
import java.nio.channels.FileChannel; |
import java.util.HashMap; |
import java.util.Map; |
/** |
* 十六进制转成图片 |
* @author Administrator |
* |
*/ |
public class Hex2Image { |
public static void main(String[] args) throws Exception { |
Hex2Image to=new Hex2Image(); |
InputStream is=new FileInputStream("f://aa.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(),"f://dd.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; |
} |
} |
//源代码片段来自云代码http://yuncode.net |
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