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public static void main(String... args) throws UnsupportedEncodingException, NoSuchAlgorithmException {
String str = "38448198tmctmc12953北京电信";
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] md5 = md.digest(str.getBytes("GBK"));
String base64Str = javax.xml.bind.DatatypeConverter.printBase64Binary(md5);
System.out.print(base64Str);
}