primmefaces遍历map

<ui:repeat value="#{employee.advantages.entrySet().toArray()}" var="entry">
Name: #{entry.key}, Cost: #{entry.value}
</ui:repeat>

Map<Product,Integer> myMap = new HashMap<Product,Integer>();

public List<Map.Entry<Product, Integer>> getProducts() {
Set<Map.Entry<Product, Integer>> productSet =
myMap.entrySet();
return new ArrayList<Map.Entry<Product, Integer>>(productSet);
}

<p:dataTable value="#{productBean.products}" var="productEntry">
<p:column>
<h:outputText value="#{productEntry.key.productName}" />
</p:column>
<p:column>
<h:outputText value="#{productEntry.value}" />
</p:column>
</p:dataTable>