Solution to Chinese garbled characters written to cookies in jsp

Cookies cannot store Chinese characters directly. Chinese characters must be encoded as asccii strings.

The code is as follows:	Copy code
String str = java.net. URLEncoder. encode (Chinese );

Encoded string
The decoded result is as follows:

The code is as follows:	Copy code
String str = java.net. URLDecoder. decode (encoded String );

Method

Generally, in this process, string transcoding == "saved cookie ==" read cookie == "transcoded =" is displayed.

Step 1: encode the data before writing the cookie

The code is as follows:	Copy code
Cookie cookie = new Cookie ("groupMembersList", URLEncoder. encode (groupMembersList, "GBK"); // The default value is temporary Cookie, MaxAge <0 // Cookie. setMaxAge (-1 ); Response. addCookie (cookie );

Step 2: read and decode the cookie

The code is as follows:	Copy code
<% Cookie [] cookies = request. getCookies (); For (Cookie cookie: cookies ){ If (cookie. getName (). Inclusignorecase ("groupMembersList ")) Request. setAttribute ("group", URLDecoder. decode (cookie. getValue (), "GBK "));    } %> <C: out value = "$ {requestScope. group}"/>

There is another way

The code is as follows:	Copy code
Try { Cookie cookie = new Cookie (name, new String (value. getBytes ("GBK"), "ISO8859-1 ")); Cookie. setDomain (this. domain ); Cookie. setPath ("/"); Cookie. setMaxAge (120*1000 ); Response. addCookie (cookie ); } Catch (Exception e ){ E. printStackTrace (); }