display SQL rows in table - spring

Question

How can I display all rows from SQL database in JSP table?
In order to one row represent one 'td' tag in table. This code below displays only last row from my database.
CartController.java:
#RequestMapping(value="/cart.html", method = RequestMethod.GET)
public ModelAndView cartPage(Model model) throws SQLException, ClassNotFoundException {
PreparedStatement pst;
ResultSet rs;
Connection con;
con = db.getConnect();
pst = con.prepareStatement("SELECT * FROM onlineshop.cart");
rs = pst.executeQuery();
while (rs.next()) {
model.addAttribute("ID", rs.getString(1));
model.addAttribute("picture", rs.getString(2));
model.addAttribute("name", rs.getString(3));
model.addAttribute("company", rs.getString(4));
model.addAttribute("type", rs.getString(5));
model.addAttribute("price", rs.getString(6));
}
ModelAndView cart = new ModelAndView("Cart");
return cart;
}
and here is fragment of Cart.jsp:
<div style="padding-right: 40px">
<table border="1">
<tr>
<td>ID</td>
<td>Product</td>
<td>Name</td>
<td>Company</td>
<td>Type</td>
<td>Price</td>
<td>Action</td>
</tr>
<tr>
<td>${ID}</td>
<td><img src="${picture}"/></td>
<td>${name}</td>
<td>${company}</td>
<td>${type}</td>
<td>${price}</td>
<td></td>
</tr>
</table>
</div>
Error:
type Exception report
message An exception occurred processing JSP page /WEB-INF/Cart.jsp at line 74
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/Cart.jsp at line 74
71: </tr>
72: <c:forEach var="cart" items="carts">
73: <tr>
74: <td>${cart.getID()}</td>
75: <td><img src="${cart.getPicture()}"/></td>
76: <td>${cart.getName()}</td>
77: <td>${cart.getCompany()}</td>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:574)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
javax.el.MethodNotFoundException: Method not found: class java.lang.String.getID()
javax.el.Util.findWrapper(Util.java:351)
javax.el.Util.findMethod(Util.java:213)
javax.el.BeanELResolver.invoke(BeanELResolver.java:156)
org.apache.jasper.el.JasperELResolver.invoke(JasperELResolver.java:147)
org.apache.el.parser.AstValue.getValue(AstValue.java:159)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:943)
org.apache.jsp.WEB_002dINF.Cart_jsp._jspx_meth_c_005fforEach_005f0(Cart_jsp.java:237)
org.apache.jsp.WEB_002dINF.Cart_jsp._jspService(Cart_jsp.java:190)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.29 logs.

Answer 1

Because you're overriding cart information and obviously the last row wins the bet. You should maintain a List of Carts in your controller and push them to your view. Then in the view, iterate through them and put them in each row.
Suppose you have a Cart class like this:
public class Cart {
private String ID;
private String picture;
private String name;
private String company;
private String type;
private String price;
// getters and setters
}
Change your controller to create a List of Carts and add each Cart to the list:
...
List<Cart> carts = new ArrayList<>();
while (rs.next()) {
Cart cart = new Cart();
cart.setID(rs.getString(1));
cart.setPicture(rs.getString(2));
cart.setName(rs.getString(3));
cart.setCompany(rs.getString(4));
cart.setType(rs.getString(5));
cart.setPrice(rs.getString(6));
carts.add(cart);
}
model.addAttribute("carts", carts);
...
And in the view:
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
...
<c:forEach var="cart" items="carts">
<tr>
<td>${cart.getID()}</td>
<td><img src="${cart.getPicture()}"/></td>
<td>${cart.getName()}</td>
<td>${cart.getCompany()}</td>
<td>${cart.getType()}</td>
<td>${cart.getPrice()}</td>
<td></td>
</tr>
</c:forEach>