A solution to the Chinese garbled character of the form in the Ajax submission __ajax

Submit code for the form as follows:

Createxmlhttprequest ();
Xmlhttp.onreadystatechange=callback;
var url= "registercheck?username=" +username+ "&password=" +pass+ "&realname=" +realname+ "&sex=" +sex+
"&birthday=" +date+ "&id=" +id+ "&email=" +email+ "&tel=" +tel+ "&address=" +address+ "& Checkstr= "+CHECKSTR;
Xmlhttp.open ("post", url);
Xmlhttp.setrequestheader ("Content-type", "application/x-www-form-urlencoded;charset=utf-8");

where realname and address may be Chinese strings, submitted to the servlet to insert the database found into garbled, online search, some netizens mentioned to the URL for two times code:

Url=encodeuri (encodeURI (URL));

To decode and restore in the servlet:

Realname=java.net.urldecoder.decode (Realname, "UTF-8");

can solve the problem.