Send ArrayList<Product> from Servlet and receive in JSP
Question
This is my servlet code. Here, products is an object of ArrayList<Products> and I am sending this to a JSP file. request is an object of type HttpServletRequest .
request.setAttribute("listOfProducts", products);
request.getRequestDispatcher("UpdateProduct.jsp").forward(request, response);
In my JSP, I tried to receive this.
ArrayList<Products> product = request.getAttribute("listOfProducts");
It shows me this error
Type mismatch: cannot convert from Object to ArrayList
Then I tried this
ArrayList<Products> product = (ArrayList<Products>) request.getAttribute("listOfProducts");
Then I got this warning
Multiple annotations found at this line: - Type safety: Unchecked cast from Object to ArrayList - Type mismatch: cannot convert from Object to ArrayList
1 answers
solution1
1 ACCPTED 2017-09-15 10:35:28
The following is the modern (environmentally friendly!) way to do this:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<head>
...
</head>
<body>
...
<c:forEach items="${listOfProducts}" var="product">
<tr><td>${product.id} </td>
<td>${product.name} </td>
<td>${product.whatever} </td></tr>
</c:forEach>
...
</body>
</html>
The file extension of your JSP must be .jspx .
No java code is required in the page.
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