JSON 对象使用 java

Question

我有 json 格式，我想使用 JSONObject 和 JSONArray 在 java 代码中创建它，但我没有得到正确格式的输出。 JSON格式如下

var transaction_Data = 
[
    {
    "key": "PASSED",
    "values": [

        {"x": "20 June", "y": 30},
        {"x": "21 June", "y": 50},
        {"x": "22 June", "y": 20},
        {"x": "23 June", "y": 60},
        {"x": "19 June", "y": 20},
        {"x": "24 June", "y": 10}
        ]
    },
    {
    "key": "FAILED",
    "values": [
            {"x": "19 June", "y": 50},
            {"x": "21 June", "y": 30},
            {"x": "20 June", "y": 20},
            {"x": "23 June", "y": 70},
            {"x": "22 June", "y": 45},
            {"x": "24 June", "y": 60}
     ]
   }
]

如何在 java 中创建此 json 对象，因为我想使用此对象使用 NVD3 创建多条形图。非常感谢任何帮助！

Answer 1

you can try it out with this POJOs.

class TransactionData {
    private String key;
    private List<Data> values;
    public TransactionData(String key, List<Data> values) {
        this.key = key;
        this.values = values;
    }
}
class Data {
    private String x;
    private Integer y;
    public Data(String x, Integer y) {
        this.x = x;
        this.y = y;
    }
}

JSON 对象使用 java

JSON object using java

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