手动编解码解决get提交错误的问题

1         String username = request.getParameter("username");
2         System.out.println("username="+username);
3         
4         //反向编码, 将乱码再编码回二进制
5         byte[] bytes = username.getBytes("iso8859-1");
6         //拿着二进制数组去查正确的码表, 返回正确的数据
7         username = new String(bytes, "utf-8");
8 
9         System.out.println("username="+username);