Cookie The transmitted value can only be ASCII code , The coding table is relatively old and does not contain many symbols and words
Especially Chinese , So in cookie In the process of value transfer, it needs to be converted to the corresponding ASCII Code re analysis
as follows
URLEncoder.encode(" millet ", "utf-8")
URLDecoder.decode(value,"utf-8")
cookie It cannot be used after being disabled cookie To transmit session operation
So you have to go through url The way to deliver
response.sendRedirect(response.encodeRedirectURL(request.getContextPath()+"/some2"));
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