CODEWITHSUNDEEP
javaapache-commons-beanutils
Eugene Lebedev
Eugene Lebedev

Reputation: 1474

BeanUtils: Different property names

i have a problem with BeanUtils, i need to convert Map to POJO with different property names

entity:

public class User {
    private int id;
    private String nickname;
    private int agility;

    public int getId() {
        return id;
    }

    // getters and setters
}

Target application API returns HashMap (via XML-RPC) with something like that:

user_id => "123456"
nickname => "Bob"
agility => 30

but my POJO class doesn't have user_id property

how to translate property name user_id => id?

i didn't find any annotations for that case

Upvotes: 1

Views: 3940

Answers (2)

Eugene Lebedev
Eugene Lebedev

Reputation: 1474

BeanUtils is not suitable for my case, i used Gson library. Gson has feature - convert object to json. After that i convert json into User class. name property marked by annotation @SerializedName

entity class:

class User {
    @SerializedName("user_id")
    private int id;
    private String name;

    // getters and setters here
    // .toString
}

usage:

Map<String,String> apiObject = new HashMap<>();

apiObject.put("user_id","123123");
apiObject.put("name","Bob");

Gson gson = new Gson();
String json = gson.toJson(values);
User user = gson.fromJson(json, User.class);

System.out.println(user);

example output:

User{id=123123, name='Bob'}

Upvotes: 1

Mrinal
Mrinal

Reputation: 1906

If it is permitted to later the HashMap after you received it, you change change the key.

map.put("id", map.remove("user_id"));

Then use BeanUtils to populate your bean:

User usr = new User();
BeanUtils.populate(usr, map);

Upvotes: 1

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