java ee - Importing and retrieving a class object in a jsp -

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i trying retrieve array list object of type queryclass servlet have made , import class of queryclass can use object in jsp called validate.jsp" object seems not exist when attribute in jsp file, though in servlet initialized appropriate data , set right name.

in servlet have snippet

queryclass query = new queryclass("","","","");  string searchname = request.getparameter("searchname");  arraylist<queryclass> data = query.getsearchednames(searchname);  request.setattribute("data",data);    requestdispatcher rd = request.getrequestdispatcher("validate.jsp");  rd.forward(request, response);

in jsp have following

<%@page import="src.main.java.queryclass"%>  <% if(request.getattribute("data")!=null)  {     arraylist<queryclass> value = (arraylist<queryclass>)request.getattribute("data"); } %>

your requirements fulfilled keeping in mind mvc approach made scriptlets obsolete , deprecated.

  1. set data want request attribute in servlet method:

    list<queryclass> data = createlist(...); request.setattribute("data",data); request.getrequestdispatcher("validate.jsp").forward(request, response);

  2. access different properties of request (session, application, etc.) via el:

    ${data}

so, keep in mind desire traverse list, traversal have following style in jsp if used jstl:

<ul>     <c:foreach var="element" items="${data}">         <li>${element.name}</li>     </c:foreach> </ul>

the code above generate list of names of each element data object, provided class has getname() method defined.


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