Question

map与forEach的嵌套遍历，如何返回一个数组

Answer 1

public static void main(String[] args) {
Map<String,Map<String,Object>> map = new HashMap<String,Map<String,Object>>();

for (String key : map.keySet()) {
for (String keyIn : map.get(key).keySet()) {
System.out.println("大MAP>>>"+map.get(key)+"小MAP>>>>>"+map.get(key).get(keyIn));
}
}
}