Java迭代嵌套 map

Question

请指导我遍历每个元素并打印

        for (Entry<String, Map<String, Map<String, Map<String, List<TicketDetailsDTO>>>>> zones : zoneOrderedTicketList.entrySet()) {
            for (String string : zones.getValue()) {

            }
        }

TicketDetailsDTO 对象具有名称和 ID 作为字段

Answer 1

试试这个，

for (Entry<String, Map<String, Map<String, Map<String, List<TicketDetailsDTO>>>>> zones : zoneOrderedTicketList.entrySet()) {
         for(Entry<String, Map<String, Map<String, List<TicketDetailsDTO>>>> map2 : zones.getValue().entrySet()){
             for( Entry<String, Map<String, List<TicketDetailsDTO>>> map3 : map2.getValue().entrySet()){
                 for(Entry<String, List<TicketDetailsDTO>> map4: map3.getValue().entrySet()){
                     for(TicketDetailsDTO ticketDetailsDTO : map4.getValue()){
                         // Play with your code here 
                     }
                 }
             }
         }
    }