把一串16进制码转化为一张图片

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/**

    * 存储图片16进制串为图片文件

    * @param src 图片16进制文本串

    * @param output 要保存的图像文件路径

    */

   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;

   }