基本上,我想在JSP页面上显示ArrayList中的产品。我已经在servlet代码中完成了这个任务。但是没有输出。
另外,我必须将products.jsp放置在/WEB-INF文件夹中吗?当我这样做时,我会得到一个请求的资源错误。
我的Servlet代码(InventoryServlet.java)
另外,我必须将products.jsp放置在/WEB-INF文件夹中吗?当我这样做时,我会得到一个请求的资源错误。
我的Servlet代码(InventoryServlet.java)
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
try {
List<Product> products = new ArrayList<Product>();
products = Inventory.populateProducts(); // Obtain all products.
request.setAttribute("products", products); // Store products in request scope.
request.getRequestDispatcher("/products.jsp").forward(request, response); // Forward to JSP page to display them in a HTML table.
} catch (Exception ex) {
throw new ServletException("Retrieving products failed!", ex);
}
}
我的JSP页面(products.jsp)
<h2>List of Products</h2>
<table>
<c:forEach items="${products}" var="product">
<tr>
<td>${product.Description}</td>
<td>${product.UnitPrice}</td>
</tr>
</c:forEach>
</table>
Web.xml
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<servlet>
<servlet-name>Inventory</servlet-name>
<servlet-class>com.ShoppingCart.InventoryServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Inventory</servlet-name>
<url-pattern>/products</url-pattern>
</servlet-mapping>
</web-app>
/products
,而不是/products.jsp
,对吗? - axtavt