【Java】图片转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;
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 & 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 & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
}
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