我尝试在spring Boot 中使用cookie创建一个购物车，但是cookie没有被添加/显示。下面是控制器Map和页面html，你能告诉我我做错了什么吗？
页面截图：
控制器Map：
@GetMapping("/products/addToCart/{id}")
private String addToCart(@PathVariable("id") long productId, HttpServletResponse response) {
try {
Cookie browserSessionCookie = new Cookie(Long.toString(productId), Long.toString(1L));
response.addCookie(browserSessionCookie);
return "redirect:/products/cart";
} catch (Exception e) {
logger.error(e.getMessage());
return "fail";
}
}
@GetMapping("/products/cart")
public String showCookies(HttpServletRequest request, Model model) {
Cookie[] cookies = request.getCookies();
model.addAttribute("cookies",cookies);
return "/cart";
}Thymeleaf产品列表页面：
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>All Products</title>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
table, th, td {
border: 1px solid black;
}
td {
padding: 20px;
}
.topnav {
background-color: #A32638;
overflow: hidden;
}
.topnav a {
float: left;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.topnav a:hover {
background-color: #ddd;
color: black;
}
.topnav a.active {
background-color: #FCB514;
color: white;
}
</style>
</head>
<body>
<div class="topnav">
<a th:href="@{/}">Home</a>
<a class="active" th:href="@{/productsList}">Products</a>
<a th:href="@{/products/cart}">Cart</a>
</div>
<br>
Products
<br>
<br>
<div th:if="${ not#lists.isEmpty(products)}">
<table>
<tr>
<th>Name</th>
<th>Price</th>
<th>Category</th>
<th>Action</th>
</tr>
<tr th:each="product : ${products}">
<td th:text="${product.name}"></td>
<td th:text="${product.price}"></td>
<td th:text="${product.category.name}"></td>
<td>
<a th:href="@{/products/details/{id}(id=${product.id})}">Details</a>
<a th:href="@{/products/addToCart/{id}(id=${product.id})}">Add To Cart</a>
</td>
</tr>
</table>
<br>
</div>
</body>
</html>用于显示Cookie的Thmeleaf页面：
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<br>
<h1>Show cookies</h1>
<dl th:each="cookie : ${cookies}">
<dt th:text="${cookie.getName()}"></dt>
<dd th:text="${cookie.getValue()}"></dd>
</dl>
<h1>Session Data</h1>
<dl th:each="elem : ${sessionElems}">
<dt th:text="${elem.getName()}"></dt>
<dd th:text="${elem.getValue()}"></dd>
</dl>
</body>
</html>谢谢你。
1条答案
按热度按时间db2dz4w81#
解决方案是将创建的cookie的路径设置为购物车页面的路径，如下所示：
browserSessionCookie.setPath("/products/cart");感谢您的回复！