Can a servlet send to two different JSPs?

Question

Can a servlet send to two different JSPs?

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#1 by (4 votes)
#2 by (2 votes)

2

My page index.jsp uses the Servlet and then sends it to resposta.jsp . In resposta.jsp depending on the button, I use the Servlet to use another Java function. But I do not know how to make this use.

In my servlet I use:

RequestDispatcher rd = request.getRequestDispatcher("resposta.jsp");
rd.forward(request,response);

which sends to resposta.jsp .

PS: remembering that I already use an if / elseif to check which one should be sent, my problem is not knowing if I can create two getRequest or something like this.

java request jsp servlet

asked by anonymous 14.11.2014 / 01:36

2 answers

2

As you are doing a forward in a jsp and not in the servlet, you can use jstl instead of pure java, like this:

<c:choose>
  <c:when test="${condicao}">
    <jsp:forward page="/url1.jsp" />
  </c:when>
  <c:otherwise>
    <jsp:forward page="/url2.jsp" />
  </c:otherwise>
</c:choose>

Remembering that you need to add the jstl library and the directive taglib with uri.

24.11.2014 / 19:51

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score 4 · Accepted Answer

You do not need to create two RequestDispatcher objects, you can create the variable that stores the object reference first, and then you create the object within the if. Example:

RequestDispatcher rd;
if (/*condicao*/) {
    rd = request.getRequestDispatcher("resposta1.jsp");
}
else {
    rd = request.getRequestDispatcher("resposta2.jsp");         
}
rd.forward(request, response);

But if by chance you create two different objects, it will just leave the reference on the first side. Example:

RequestDispatcher rd;
rd = request.getRequestDispatcher("resposta1.jsp");
rd = request.getRequestDispatcher("resposta2.jsp");         
rd.forward(request, response);

it will send to resposta2.jsp and the first created object will be disregarded.