在Java中遍历hashmap时确定数据类型

Question

Is it possible to inspect data type of value while iterating through HashMap<String,Object> ?

while(iterator.hasNext) {
    Map.Entry pairs = (Map.Entry) iterator.next();
    String key = pairs.getKey();
   <Type> value = (Type) pairs.getValue();        
}

The map has a combination of Boolean , String and ArrayList<String> types as values. I would like to determine the data type of the value at runtime and properly cast it.

Answer 1

我建议您使用像Jackson或GSON这样的对象映射器在json和您的对象之间进行转换，而不要手动执行。