How to convert a map to a entity object in java?

Question

I have a entity object like this:

class Person{
 private String name;
 private String class;
 private String semester;
}

Now I have a map like this: Map<String,String>

{
   "name":"Giri"
   "class":"12"
   "semester":"C"
}

Now I want to convert this map to a Person object where each field in object corresponds to that field in map.

How can I do this?

Thanks

Answer 1

You can write your custom mapper for this.

toPerson(Map<String, String> map) {
    if(map == null) {
        return null;
    }
    Person person = new Person();
    person.setName = map.get("name");
    person.setClass = map.get("class");
    person.setSemester = map.get("semester");
    return person;
}

Or you can use jackson convertValue()

ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Person person = mapper.convertValue(map, Person.class);

Apart from jackson's ObjectMapper there are DozerBeanMapper, BeanUtils, google's Gson can be used for same purpose.