java 16进制与图片互转

2023-11-10

十六进制转成图片

/**
     * 十六进制转成图片
     * @author Administrator
     *
     */
    public static 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 static 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;
    }
    public static void main(String[] args)throws Exception {
        String str = "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" +
                "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" +
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                "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" +
                "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" +
                "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" +
                "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" +
                "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" +
                "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";
        saveToImgFile(str.toUpperCase(),"D://1.jpg");
    }

图片转16进制

public static void main(String[] args) throws Exception {
		try{
			StringBuffer sb = new StringBuffer();
			FileInputStream fis = new FileInputStream("D://1.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("D://1.txt"));
			//pw.println(str);
			//pw.close();
		}catch(IOException e){
		}
	}
	/*
	 *  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();

	}
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