Convert JSON to Apex Step by Step

• Click Utilities > Convert JSON to Apex in the main menu
• Default class name of main class is JSON2Apex, after you input the JSON to be converted, plugin will ask you to input the class name, you can change the default name there.
• In order to keep the accuracy of converted result, you should predefine the every value of every key in the input JSON

Notes:

• If value is matched with \d{4}-\d{2}-\d{2}T[\d:Z.]+ regress expression, data type will be thought as DateTime
• If value is matched with \d{4}-\d{2}-\d{2} regress expression, data type will be thought as Date
• If value is null, data type will be thought as Object

Example:

If the json string is as below,

{
    "name": "test",
    "birthday": "1982-01-19T09:58:13.190Z",
    "age": 32, 
    "money": 12321.5,
    "createdDate": "2015-01-20",
    "children": [
        {
            "name": "son",
            "age": 2,
            "birthday": "2013-01-19T09:58:13.190Z",
            "money": 0, 
            "toy": [{
                "name": "toy1"
            }]
        },
        {
            "name": "daughter",
            "age": 1,
            "birthday": "2014-01-19T09:58:13.190Z",
            "money": 0,
            "toy": [{
                "name": "toy2"
            }]
        }
    ],
    "father": {
        "name": "father",
        "age": 75,
        "birthday": "1940-01-19T09:58:13.190Z",
        "money": 0
    }
}

The converted apex will be as below:

global class Toy {
    global String name;
}

global class Children {
    global String name;
    global List<Toy> toy;
    global Integer age;
    global Integer money;
    global DateTime birthday;
}

global class Father {
    global String name;
    global Integer age;
    global Integer money;
    global DateTime birthday;
}

global class JSON2Apex {
    global List<Children> children;
    global Date createdDate;
    global Integer age;
    global Decimal money;
    global String name;
    global Father father;
    global DateTime birthday;
}

global static JSON2Apex parse(String jsonStr) {
    return (JSON2Apex) JSON.deserialize(jsonStr, JSON2Apex.class);
}

static testMethod void testParse() {
    String json = '{"children": [{"name": "son", "toy": [{"name": "toy1"}], "age": 2, "money": 0, "birthday": "2013-01-19T09:58:13.190Z"}, {"name": "daughter", "toy": [{"name": "toy2"}], "age": 1, "money": 0, "birthday": "2014-01-19T09:58:13.190Z"}], "createdDate": "2015-01-20", "age": 32, "money": 12321.5, "name": "test", "father": {"name": "father", "age": 75, "money": 0, "birthday": "1940-01-19T09:58:13.190Z"}, "birthday": "1982-01-19T09:58:13.190Z"}';
    JSON2Apex obj = parse(json);
    System.assert(obj != null);
}