工具代码

发布日期：2010-3-24 6:31:36

MD5変換

public static String Md5(String str)

{

if(str != null && !str.equals("")){

try{

MessageDigest md5 = MessageDigest.getInstance("MD5");

char[] HEX = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};

byte[] md5Byte = md5.digest(str.getBytes("UTF8"));

StringBuffer sb = new StringBuffer();

for(int i=0;i<md5Byte.length;i++){

sb.append(HEX[(int)(md5Byte[i] & 0xff) / 16]);

sb.append(HEX[(int)(md5Byte[i] & 0xff) % 16]);

}

str = sb.toString();

}catch(NoSuchAlgorithmException e){

}catch(Exception e){

}

}

return str;

}