最好使用a
java.util.Map来存储键和值，而不是两个
ArrayList，例如：
Map<String, String> foods = new HashMap<String, String>();// here key stores the food pres// and values are that which will be visible to the user in the drop-downfoods.put("man", "mango");foods.put("app", "apple");foods.put("gra", "grapes");// if this is your servlet or action class having access to HttpRequest object thenhttpRequest.setAttribute("foods", foods); // so that you can retrieve in JSP现在要在JSP中迭代地图，请使用：
<select id="food" name="fooditems"> <c:forEach items="${foods}" var="food"> <option value="${food.key}"> ${food.value} </option> </c:forEach></select>或不带JSTL：
<select id="food" name="fooditems"><%Map<String, String> foods = (Map<String, String>) request.getAttribute("foods");for(Entry<String, String> food : foods.entrySet()) {%> <option value="<%=food.getKey()%>"> <%=food.getValue() %> </option><%}%></select>要了解有关使用JSTL进行迭代的更多信息 ，这里是一个很好的SO答案。
