遍历jsonobject

1 entrySet.iterator生成迭代器

2 从迭代器获取Map.Entry的单元对象

3 获取key和value

Map
    
      macRssi_id = new HashMap
     
      ();        Iterator it = rssi_id.entrySet().iterator();        while (it.hasNext()){            Map.Entry
      
        entry = (Map.Entry
       
        )it.next();            String key = entry.getKey();            JSONArray array = rssi_id.getJSONArray(key);