/**
* 利用MD5加密
* @return String 加密后的字符串
* @param str 待加密的字符串
* @throws NoSuchAlgorithmException 异常
* @throws UnsupportedEncodingException 异常
*/
@SuppressWarnings("finally")
public String Md5(String str) {
String newstr = "";
MessageDigest md5;
try {
md5 = MessageDigest.getInstance("MD5");
BASE64Encoder base64Encoder=new BASE64Encoder();
newstr = base64Encoder.encode(md5.digest(str.getBytes("utf-8")));
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}finally{
return newstr;
}
}
/**
* sha1加密
* @param str 返回加密字符串
* @return
*/
public static String getSha1(String str) {
if (str == null || str.length() == 0) {
return null;
}
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
try {
MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
mdTemp.update(str.getBytes("UTF-8"));
byte[] md = mdTemp.digest();
int j = md.length;
char buf[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
buf[k++] = hexDigits[byte0 & 0xf];
}
return new String(buf);
} catch (Exception e) {
return null;
}
}