importjavax.imageio.stream.FileImageInputStream;importjavax.imageio.stream.FileImageOutputStream;importjava.io.ByteArrayOutputStream;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.IOException;/***@authorlishupeng
* @create 2017-05-06 下午 3:48
**/
public classImage2Byte {public static voidmain(String[] args){byte[] data = image2byte("C:\\Users\\Administrator\\Desktop\\a\\1.png");
System.out.println(data.toString());
byte2image(data,"d://222.jpg");
}//图片到byte数组
public static byte[] image2byte(String path) {byte[] data = null;
FileImageInputStream input= null;try{
input= new FileImageInputStream(newFile(path));
ByteArrayOutputStream output= newByteArrayOutputStream();byte[] buf = new byte[1024];int numBytesRead = 0;while ((numBytesRead = input.read(buf)) != -1) {
output.write(buf,0, numBytesRead);
}
data=output.toByteArray();
output.close();
input.close();
}catch(FileNotFoundException ex1) {
ex1.printStackTrace();
}catch(IOException ex1) {
ex1.printStackTrace();
}returndata;
}//byte数组到图片
public static void byte2image(byte[] data, String path) {if (data.length < 3 || path.equals("")) return;try{
FileImageOutputStream imageOutput= new FileImageOutputStream(newFile(path));
imageOutput.write(data,0, data.length);
imageOutput.close();
System.out.println("Make Picture success,Please find image in " +path);
}catch(Exception ex) {
System.out.println("Exception: " +ex);
ex.printStackTrace();
}
}//byte数组到16进制字符串
public String byte2string(byte[] data) {if (data == null || data.length <= 1) return "0x";if (data.length > 200000) return "0x";
StringBuffer sb= newStringBuffer();int buf[] = new int[data.length];//byte数组转化成十进制
for (int k = 0; k < data.length; k++) {
buf[k]= data[k] < 0 ? (data[k] + 256) : (data[k]);
}//十进制转化成十六进制
for (int k = 0; k < buf.length; k++) {if (buf[k] < 16) sb.append("0" +Integer.toHexString(buf[k]));elsesb.append(Integer.toHexString(buf[k]));
}return "0x" +sb.toString().toUpperCase();
}
}