Map遍历

List<Map<String,List<String>>> maplist = SessionHelper.getUserTableAuthData();
				//所有权限表
				List<String> IndicatorcategoryIDs = new ArrayList<>();
				//所有权限表-权限字段数组
				HashMap<String, List<String>> IndicatorIDshashMap = new HashMap<>();
				for (Map<String, List<String>> item : maplist) {
					Iterator<Map.Entry<String, List<String>>> iter = item.entrySet().iterator();// 该方法获取列名.获取一系列字段名称.例如name,age...
					while (iter.hasNext()) {
						Map.Entry entry = (Map.Entry) iter.next();// 把hashmap转成Iterator再迭代到entry
						String key = "";
						if (entry.getKey() != null)
							key = entry.getKey().toString(); // 从iterator遍历获取key
							IndicatorcategoryIDs.add(key);
						List<String> value = new ArrayList<>();
						if (entry.getValue() != null)
							value = (List<String>)entry.getValue(); // 从hashmap遍历获取value
						IndicatorIDshashMap.put(key, value);
					}
				}

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