passing hidden values to Servlets

[sharaf navas]

HI ALL i'm developing a MVC based web app

i wanted to pass my JSP " java object" to ControllerServlet where it should occur when i press a button which is generated on loop

jsp:useBean id="empVO" class="com.tt.notification.vo.EmployeeVO" scope="request"
 

 <%
         List lst=(List)request.getAttribute("LoadAllEmployee");
        for (int i=0;i<lst.size();i++){
            empVO =(EmployeeVO)lst.get(i);
            out.print(empVO.getEmpName());
           out.print(empVO.getEmpLastName());%>
            <input type="button" name="bttnSubmit" value="Delete" onKlick="/control?action=deleteEmployee&empId="/<
            <input type="button" name="bttnEdit" value="   Edit   " onKlick="/control?action=editEmployee&empId="/<<%
        }
   %>    

if press the bttnSubmit how do i transfer my empVO.getEmpId() which returns a unique Id to another JSp to edit it via my ControllerServlet help me guys
thank you

[Richard Green]

1. its onClick, not onKlick
2. you should be using form submit instead of onClick

[sharaf navas]

Lynette OnClick cannot be included while posting a code, and if i use submit for each and every buttons then how do i pass my hidden variable there??

[Stefan Evans]

There are a few ways
1 - make a url on each line
2 - use javascript to populate a hidden field and submit the form.

This is probably the quickest fix for IE. Dunno if Firefox supports window.navigate method, but window.location.href=... would be equivalent.

<input type="button" name="bttnSubmit" value="Delete" onKlick="window.navigate('/control?action=deleteEmployee&empId=<%= empVO.getEmpID() %>')">

Here is an example of the second, using JSTL (because I like JSTL)

<script>
 
  function deleteEmp(theForm, empId){
    theForm.action.value = "deleteEmployee";
    theForm.empId.value = empId;
    theForm.submit();
  }
 
  function editEmp(form, empId){
    theForm.action.value = "editEmployee";
    theForm.empId.value = empId;
    theForm.submit();
  }
</script>
 
<form action="/control">
  <input type="hidden" name="action">
  <input type="hidden" name="empId">
 
  <c:forEach var="emp" items="${LoadAllEmployee}">
    <c:out value="${emp.empName}"/>
    <c:out value="${emp.empLastName}"/>
    <input type="button" name="bttnSubmit" value="Delete" onKlick="return deleteEmp(this.form, ${emp.empId})">
    <input type="button" name="bttnEdit" value="   Edit   " onKlick=" return editEmp(this.form, ${emp.empId})">
  </c:forEach>
 
</form>

Cheers,
evnafets

[sharaf navas]

thanks stefan. even i wold like to use JSTL since i'm using IntelliJ IDEA 5.02 i dont know how to configure it. even though i place all the essential jar's in the lib file even making a change in my web-xml

  <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee <a href="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"</a>
    version="2.4">  

after this do i've to add any mapping in my web-xml for jstl?

[Bear Bibeault]

No additions to web.xml are necessary.

[sharaf navas]

thanks Bear Bibeault

okay can you list me the steps hown do i configure the IDEA to use JSTL. since i've placed my neccessary JAR's in my lib dirctory under tomcat.
help needed

[Bear Bibeault]

Once the jars are in the lib folder, all you need is the directive on each page to map the taglibs to their prefix.

Or you can do as I do and specify them as a prelude.