SameGUID.java
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package com.sitech.ibnms.util;
import java.security.MessageDigest;
public class SameGUID {
private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
public static String getSameGUID(String inputString) {
return encodeByMD5(inputString);
}
private static String encodeByMD5(String originString) {
if (originString != null) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] results = md.digest(originString.getBytes());
String resultString = byteArrayToHexString(results);
return resultString.toUpperCase();
} catch (Exception ex) {
ex.printStackTrace();
}
}
return null;
}
private static String byteArrayToHexString(byte[] b) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++) {
resultSb.append(byteToHexString(b[i]));
}
return resultSb.toString();
}
private static String byteToHexString(byte b) {
int n = b;
if (n < 0)
n = 256 + n;
int d1 = n / 16;
int d2 = n % 16;
return hexDigits[d1] + hexDigits[d2];
}
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("md5:"+ SameGUID.getSameGUID("eeee 2011-10-11vvvvvvvvvvv"));
System.out.println("md5:" + SameGUID.getSameGUID("eeee bbbb"));
System.out.println("md5:"+ SameGUID.getSameGUID("eeee 2011-10-11vvvvvvvvvvv"));
}
}