How one can represent the JSON Object in clean POJO?

Question

I'm very new to Java. I'm just parsing a string and getting the Json Response like this:

{
  "customer_id": "user",
  "merchantId": "xxxx",
  "cards": 
  [
    {
      "card_token": "715fc10a-e7b3-48a1-b6e7-09e71ac050f8",
      "card_number": "11111111",
      "card_isin": "23232",
      "card_exp_year": "2013",
      "card_exp_month": "12"
    }
  ]
}

For some reason I wish I could be able to represent this in a POJO. Note that the cards field can consist of more than 1 field.

I'm new to Java. I don't want the code for doing it, but I want to know what is the best way to represent these structure in POJO.

score 3 · Accepted Answer · answered Dec 06 '12 at 08:58

3

You can use GSON that can easily convert json to java object (generic) and vice versa which further you can use for your POJO.

answered Dec 06 '12 at 08:58

Abubakkar

15,488
8
55
83

There is also another project http://jackson.codehaus.org/. I have never worked with GSON but I can tell that Jackson is very good implementation. – pedjaradenkovic Dec 06 '12 at 09:09
@Unsigned thank you for mentioning it, I will also have a look at it – Abubakkar Dec 06 '12 at 09:16

score 2 · Answer 2 · answered Dec 06 '12 at 09:23

- Manual parsing of JSON to object will be a pain.

- Its better to go with Jackson, which i use.

- Or you can also choose GSON (created by google for its internal use initially).

See this link for implementation example:

http://www.mkyong.com/java/json-simple-example-read-and-write-json/

score 1 · Answer 3 · edited May 23 '17 at 11:48

1

The two dominate JSON processors for Java are GSON (as @Abu points out in his answer) and Jackson. These libraries will help you map a Java POJO to a JSON object, and vice-versa.

Here is a comparison on SO.

edited May 23 '17 at 11:48

Community

1
1

answered Dec 06 '12 at 09:08

wulfgarpro

6,666
12
69
110

score 1 · Answer 4 · edited May 23 '17 at 11:48

1

You can also use Jackson JSON. It's a bit faster and it works great with the Java API for RESTful Services (JAX-RS), the Java standarization for REST api's.

Here's a better comparison between the two: Jackson Vs. Gson

To read an object from String, checkout the ObjectMapper class.

edited May 23 '17 at 11:48

Community

1
1

answered Dec 06 '12 at 09:10

Alex

2,953
1
27
37

How one can represent the JSON Object in clean POJO?

4 Answers4