Question

在jsp中怎么遍历hash地图

Answer 1

Map<String, Object> map = new HashMap<String, Object>();
// 遍历key
for (String key : map.keySet()) {
System.out.println(key + " " + map.get(key));
}
// 遍历Entry
for (Entry<String, Object> entry : map.entrySet()) {
System.out.println(entry.getKey() + " " + entry.getValue());
}