jsp到action用get步骤相互传中文时乱码的解决方案

jsp->action:

        //转码
    	toCity = new String(getRequest().getParameter("toCity").getBytes("ISO-8859-1"),"UTF-8");

?action->jsp

//是汉字，刚编码成非汉字
toCity = URLEncoder.encode(toCity, "utf-8");