Some transcoding of Android strings

Reprinted from ...

①, string encryption md5,32 bit 16 binary string

②, encrypting a string with ASCII characters

③, programming the ASCII string 16 binary string

Importjava.security.MessageDigest; Public classStringUtils { Public Staticstring replaceurlwithplus (string url) {if(URL! =NULL) {            returnUrl.replaceall ("http://(.) *?/"," "). ReplaceAll (" [.:/,%?&=] "," + "). ReplaceAll (" [+]+ "," + "); }        return NULL; }         Public StaticString EncodeMD5 (String text)throwsException {messagedigest MD= Messagedigest.getinstance ("MD5"); Md.update (Text.getbytes ("Us-ascii")); byte[] Digest =md.digest (); StringBuffer MD5=NewStringBuffer ();  for(inti = 0; i < digest.length; i++) {md5.append (Character.fordigit (digest[i)& 0xF0) >> 4, 16)); Md5.append (Character.fordigit (digest[i)& 0xF), 16)); }        returnmd5.tostring (); }     Public StaticString Encodemd5ascii (String text)throwsException {messagedigest MD= Messagedigest.getinstance ("MD5"); Md.update (Text.getbytes ("Us-ascii")); byte[] Digest =md.digest (); return NewString (Digest, "Us-ascii"); }     Public StaticString Decodemd5hex (String text)throwsException {byte[] Digest =text.getbytes (); StringBuffer MD5=NewStringBuffer ();  for(inti = 0; i < digest.length; i++) {md5.append (Character.fordigit (digest[i)& 0xF0) >> 4, 16)); Md5.append (Character.fordigit (digest[i)& 0xF), 16)); }        returnmd5.tostring (); }}

Some transcoding of Android strings