如何解碼來自Cookie的Unicode字符

Question

我通過將字符串格式編碼爲UTF-8來保存列表。但是我看到{,},: ...以及更多符號都在Cookie值中。

%7B%22evt%22%3A%5B%5D%2C%22exc%22%3A%5B%5D%2C%22tourQuantity%22%3A%221%22%2C%22tourId%22%3A%22067e61623b6f4ae2a1712470b63dff00%22%2C%22room%22%3A%7B%22accId%22%3A%226%22%2C%22roomTypeId%22%3A%225%22%7D%7D 

上面一個是存儲在cookie中的值。

public ResponseEntity <ModelAndView> saveReservation(@RequestBody String reservation, HttpServletRequest request, 
    HttpServletResponse response) throws Exception { 
    Cookie cookie = new Cookie("tourReservation", URLEncoder.encode(reservation, "UTF-8")); 
    cookie.setMaxAge(24 * 60 * 60); 
    cookie.setPath("/tour/reservation"); 
    response.addCookie(cookie); 
    List <?> list = service.saveRes(reservation); 
    if (list.size() > 0) { 
    ......... 
    return new ResponseEntity <ModelAndView> (model, HttpStatus.OK); 
    } 
    return new ResponseEntity <ModelAndView> (new ModelAndView("tour"), HttpStatus.BAD_REQUEST); 
} 

如何獲得我的列表字符串格式良好？我也用StringEscapeUtils，我得到了一個錯誤java.lang.IllegalArgumentException: An invalid character [34] was present in the Cookie value。

org.apache.commons.lang.StringEscapeUtils.unescapeJava(reservation)

Answer 1

保持原樣。在JavaScript中獲取cookie值並使用unescape(str)或 decodeURIComponent(str)函數對其進行解碼。

注意：unescape()已棄用，因此您可以改用decodeURIComponent()替代。