String username=new String(request.getParameter("username").getBytes("ISO-8859-1"),"gb2312");
String uri="jdbc:mysql://127.0.0.1:3306/db?useUnicode=true&characterEncoding=UTF-8";
String username=new String(request.getParameter("username").getBytes("ISO-8859-1"),"gb2312");
String uri="jdbc:mysql://127.0.0.1:3306/db?useUnicode=true&characterEncoding=UTF-8";