Simon Rydberg wrote:
> Hmmm thanks for a fast reply.
>
> How is that suppose to work?
>
> I have made a little example but I cannot get it to work.
> In jsp-file
> <%
> Map<String, String> map = new HashMap<String, String>();
> for (int i = 0; i < 10; i++) {
> map.put("a", "a" + String.valueOf(i));
> map.put("b", "a" + String.valueOf(i));
> map.put("c", "a" + String.valueOf(i));
> }
> request.setAttribute("map", map);
> %>
> <display:table name="map" export="true" pagesize="10000"
> defaultorder="descending">
> <display:setProperty name="export.excel.filename"
> value="test.xls"/>
> <display:column property="map(a)" title="A*"/>
> <display:column property="map(b)" title="B*"/>
> <display:column property="map(c)" title="C*"/>
>
> </display:table>
>
>
> javax.servlet.jsp.JspException: Error looking up property "map(a)" in object
> type "java.lang.String".
That is because your data object is a Map of Strings and not of objects
containing a getMap() method. It's using the Map as a source of rows
(each entry = one row) and then trying to call getMap() on the value of
the Map entry's value which is, as it tells you, of type java.lang.String.
Create a class:
public class MyMap {
private Map<String, String> map = new HashMap<String, String>();
public MyMap(String a, String b, String c) {
map.put("A", a);
map.put("B", b);
map.put("C", c);
}
public Map<String, String> getMap() {
return map;
}
}
In a jsp file:
<%
List<MyMap> map = new ArrayList<MyMap>();
for (int i = 0; i < 10; i++) {
map.add(new MyMap("a" + i, "b" + i, "c" + i));
}
request.setAttribute("map", map);
%>
<display:table name="map">
<display:column property="map(A)" title="A*"/>
<display:column property="map(B)" title="B*"/>
<display:column property="map(C)" title="C*"/>
</display:table>
Does that work any better?
Ed!
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