java判断两张图片是否相同

1.public static void main(String[] args){

String img1 = md5(getByte("d:/test.JPG"));
 String img2 = md5(getByte("d:/test1.JPG"));
 if (img1.equals(img2))
 System.out.println("两图片是一样的");
 else
 System.out.println("两图片是不一样的");

}

2./**
* 读取字节数
*
* @param name
* @return
*/

 public static byte[] getByte(String name) {
 // 得到文件长度
 File file = new File(name);
 byte[] b = new byte[(int) file.length()];
 System.out.println(file.length());
 try {
 InputStream in = new FileInputStream(file);
 try {
 in.read(b);
 System.out.println(in.read());
 } catch (IOException e) {
 e.printStackTrace();
 }
 } catch (FileNotFoundException e) {
 e.printStackTrace();
 return null;
 }
 return b;
 }

/**
* 加密
*
* @param s
* @return
*/

public static String md5(byte[] s) {
 // 16进制字符
 char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
 'a', 'b', 'c', 'd', 'e', 'f' };
 try {
 byte[] strTemp = s;
 MessageDigest mdTemp = MessageDigest.getInstance("MD5");
 mdTemp.update(strTemp);
 byte[] md = mdTemp.digest();
 int j = md.length;
 char str[] = new char[j * 2];
 int k = 0;
 // 移位 输出字符串
 for (int i = 0; i >> 4 & 0xf];
 str[k++] = hexDigits[byte0 & 0xf];
 }
 return new String(str);
 } catch (Exception e) {
 return null;
 }
 }