map-backed ActionForm

[Claudia Woestheinrich]

Hello,

my JSP-Code is:
<html:form action="/ProjektDDE.do">
......

    <tr>
        <td class=tl1><html:checkbox property="value" value="
<%=ent.getEntity_id().toString()%>" >&nbsp;<%=ent.getDde
()%></html:checkbox></td>

        <td class=tl1>Anzahl: <html:text property="value(key)" size
="2"/></td>
     </tr>

and the ActionForm:

public class ProjektDDEForm extends ActionForm{

    private Map enten;


    /** Creates a new instance of ProjektDDEForm */
    public ProjektDDEForm() {

    }

    public Map getEnten(){
        return enten;
    }

    public void setEnten(Map _map){
        enten=_map;
    }

    public void setValue(String _key, String _value)throws Exception
{
        getEnten().put(_key,_value);
    }

    public Object getValue(String _key)throws Exception{
        return enten.get(_key);
    }


}

In the Action-Class:

... ProjektDDEForm form=(ProjektDDEForm)actionForm;

           Map map=form.getEnten();
  Line 60:      Iterator it=map.keySet().iterator();
      while (it.hasNext()){
                String key=(String)it.next();
                System.out.println("key  "+key);
                System.out.println("value "+map.get(key));
            }



2004-09-06 10:19:57 StandardWrapperValve[action]: Servlet.service()
for servlet action threw exception
java.lang.NullPointerException
     at
de.vit.AdisAded.actions.ProjektDDEAction.execute(ProjektDDEAction.java:60)
     at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.jav

What is wrong???

Thanks Claudia


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