java实现十六进制数据与图片的互相转换的代码

我不是女神ヾ 2022-04-08 13:12 393阅读 0赞

将内容过程中比较常用的内容做个珍藏，如下的内容内容是关于 java实现十六进制数据与图片的互相转换的内容。

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;
    
    public class Hex2Image {
    	public static void main(String[] args) throws Exception {
    		Hex2Image to=new Hex2Image();
    		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);
    		}
    	
    	}
    	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.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

import java.io.BufferedInputStream;  
    import java.io.BufferedReader;  
    import java.io.File;  
    import java.io.FileInputStream;  
    import java.io.FileOutputStream;  
    import java.io.FileWriter;  
    import java.io.IOException;  
    import java.io.InputStream;  
    import java.io.InputStreamReader;  
    import java.io.PrintWriter;  
      
    public class ImageToHex {  
        public static void main(String[] args) throws Exception {  
          
        try{   
            StringBuffer sb = new StringBuffer();   
            FileInputStream fis = new FileInputStream("f:/345.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);  
            }  
            byte[] result=bos.toByteArray();  
          
              
            System.out.println("++++"+byte2HexStr(result));  
            String str=byte2HexStr(result);  
               pw.println(str);     
               pw.close();  
            }catch(IOException e){   
            }   
          
    }  
        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;  
        }  
        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();  
      
        }  
      
      
      
    }