Object suddenly missing from HttpServletRequest
- by Jeune
I print a list directly in the servlet using the print writer and the list prints.
When I try to put in the jsp however the list doesn't print whether I use JSTL or scriptlets.
I tried to test in JSTL and scriptlet if the object is null and turns out that it is!
Why does this happen and how can I fix this?
Servlet code that works
for (Artist artist:artists){
resp.getWriter().println(artist.getName());
}
Servlet code that puts object in the request
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
ApplicationContext ctx =
new ClassPathXmlApplicationContext("com/helloworld/beans/helloworld-context.xml");
ArtistDao artistDao = (ArtistDao) ctx.getBean("artistDao");
List<Artist> artists = null;
try {
artists = artistDao.getAll();
} catch (SQLException e) {
e.printStackTrace();
}
req.setAttribute("artists", artists);
try {
req.getRequestDispatcher("index.jsp").forward(req, resp);
} catch (ServletException e) {
e.printStackTrace();
}
scriptlet code that suddenly finds the object null
<%
List<Artist> artists = (List<Artist>) request.getAttribute("artists");
if (artists == null) {
out.println("artists null");
}
else {
for (Artist artist: artists){
out.println(artist.getName());
}
}
%>
Even the jstl code seems to agree
<c:if test="${artists eq null}">
Artists are null
</c:if>
<c:forEach var="artist" items="${artists}">
${artist.name}
</c:forEach>
For my app I am using weblogic, spring 2.5.6 and ibatis.
