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POJSF 2.0: cookies are not persisted immediately after AJAX call, HTTP request required
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  1. POJSF 2.0: cookies are not persisted immediately after AJAX call, HTTP request required
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    copied!<p>Ajax call performed in order to remove item from shopping cart - <code>removeOrder()</code> method is called</p> <p>UI <code>removeOrder()</code> call(JSF&amp;Primefaces):</p> <pre><code>&lt;p:commandButton value="clean" actionListener="#{showProducts.removeOrder}" process="@form" update="@form,:ccId:cCart:ccSizeId,:ccId:cCart:ccTotId" immediate="true"&gt; &lt;f:attribute name="remove" value="#{cart.name}"/&gt; &lt;/p:commandButton&gt; </code></pre> <p>Backend <code>removeOrder()</code> call(managed bean)</p> <pre><code>public void removeOrder(ActionEvent e) { String productName = (String) e.getComponent().getAttributes().get("remove"); Product p = getProductByName(productName); inCart.remove(p); persistCookies(); emptyCartNotifier(); totalRendered(); } </code></pre> <p>Here cookies is persisted,output of this method as is expected,Cookie array contains cookies with empty values,that's OK:</p> <pre><code>private void persistCookies() { HttpServletResponse httpServletResponse = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse(); String ids = ""; for (Product prod : inCart) { // TODO change logic to support real count,for now 1 is available only ids += prod.getId() + ";" + prod.getCount() + "_"; } Cookie cookie = new Cookie(SC_COOKIE, ids); Cookie cookie2 = new Cookie(SC_SIZE, String.valueOf(inCart.size())); Cookie cookie3 = new Cookie(SC_TOTAL_PRICE, String.valueOf(subTotal)); cookie3.setPath("/"); cookie3.setMaxAge(TWO_WEEKS); httpServletResponse.addCookie(cookie3); cookie.setPath("/"); cookie.setMaxAge(TWO_WEEKS); cookie2.setPath("/"); cookie2.setMaxAge(TWO_WEEKS); httpServletResponse.addCookie(cookie); httpServletResponse.addCookie(cookie2); } </code></pre> <p>Here problem occurred, the method emptyCartNotifier() see <strong><em>non-empty "previous" Cookies</em></strong> array</p> <pre><code>private String emptyCartNotifier() { HttpServletRequest httpServletRequest = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest(); Cookie[] cookies = httpServletRequest.getCookies(); boolean isCookiePresent = false; if (cookies != null) { for (Cookie c : cookies) { if (SC_COOKIE.equals(c.getName()) &amp;&amp; (!c.getValue().isEmpty())) { isCookiePresent = true; } } } if (inCart.isEmpty() &amp;&amp; (!isCookiePresent)) { emptyCartNotifier = "you cart is empty"; isFormRendered = false; } else { emptyCartNotifier = ""; isFormRendered = true; } return emptyCartNotifier; } </code></pre> <p>After any HTTP request performed, that Cookie array is really cleaned up.</p> <p>As I see , clash is:<br>after AJAX call cleans cookie, that <code>HttpServletRequest</code> contains non-empty cookie until new HTTP request performed(user submit button or go by link).</p> <p>Is there solution or good practice for immediate cookie management,when web-app combines AJAX and non-AJAX calls?</p> <p>Thank you.</p>
 

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