CODEWITHSUNDEEP
javajsonspringget
Amiko
Amiko

Reputation: 585

How do I convert object into Map style JSON to send it through Get request in Spring?

Object Model: 

public class NotificationSettingsDto {

private Boolean campaignEvents;
private Boolean drawResultEvents;
private Boolean transactionEvents;
private Boolean userWonEvents;
}

Say I'm getting this object

new NotificationSettingsDto(true,true,true,true);

through spring get request.

And this is the JSON value I want to get from this object.

[{"name" : "campaignEvents" ,  "value" : true},
 {"name" : "drawResultEvents" ,  "value" : true},
 {"name" : "transactionEvents" , "value" : true},
 {"name" : "userWonEvents",    "value" : true}]

Upvotes: 0

Views: 73

Answers (2)

Amiko
Amiko

Reputation: 585

This solved it :

Arrays.asList(  new CustomPair<>("campaignEvents", nsDto.getCampaignEvents()),
                new CustomPair<>("drawResults", nsDto.getDrawResultEvents()),
                new CustomPair<>("transactionEvents", nsDto.getTransactionEvents()),
                new CustomPair<>("userWonEvents", nsDto.getUserWonEvents())

nsDto stands for NotificationSettingsDto. Whereas CustomPair is:

public class CustomPair<K, V> {
private K key;
private V value; 
}

@nafas was right in the comment section. Thanks. It's not the cleanest Solution but it does it

Resulted JSON :

[{"key":"campaignEvents","value":true},
 {"key":"drawResults","value":true},
 {"key":"transactionEvents","value":true},
 {"key":"userWonEvents","value":true}]

Upvotes: 3

Roxana Roman
Roxana Roman

Reputation: 1012

You can use Jackson 2.x ObjectMapper class. 

NotificationSettingsDto obj = new NotificationSettingsDto(true,true,true,true);
ObjectMapper mapper = new ObjectMapper();
String jsonString = mapper.writeValueAsString(obj);

But your json string is not valid. This is how your json would look like:

{
    "campaignEvents": true,
    "drawResultEvents": true,
    "transactionEvents": true,
    "userWonEvents": true
}

EDIT: You can also do it using Gson as mentioned in the comment.

Gson gson = new Gson();
NotificationSettingsDto obj = new NotificationSettingsDto(true,true,true,true);
String jsonString = gson.toJson(obj);

Upvotes: 2

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