Good tools for working with json in Java?

Question

Java

In general, I have a similar json

{
    "count": 2,
    "next": null,
    "previous": null,
    "results": [
        {
            "parser": 1,
            "date_of_check": "2017-03-24",
            "city": 2,
            "parse_city": "hfghfgh"
        },
        {
            "parser": 1,
            "date_of_check": "2017-03-24",
            "city": 4,
            "parse_city": "Donezk"
        }
    ]
}

I need to get an array from 'results'. Sometimes the contents of this array are nested. Actually the question is, what tools (libraries) would you recommend for working with similar json structures?

Answer 1

https://github.com/google/gson
https://futurestud.io/tutorials/gson-getting-start...

Answer 2

Oddly enough, I would recommend the Mongo driver. It doesn't matter if it's a driver. Data can be put into it without loading data from the Mongo server.
mvnrepository.com/artifact/org.mongodb/mongo-java-... (There is a newer version)
Declare a variable for your array:

import com.mongodb.*;
import com.mongodb.util.JSON;

BasicDBObject json = (BasicDBObject) com.mongodb.util.JSON.parse(json_str);
BasicDBList result = (BasicDBList)json.get("result");

You can also use Nashorn . This allows you to use JavaScript in Java at all, but you have to get used to using it. But the thing is awesome.

Answer 3

For Android - standard org.json.*for everything else - don't use Java.

Answer 4

https://github.com/FasterXML/jackson - great liba