java - JSON 对象如果重复则不应添加

Question

Scanner input = new Scanner(System.in);
JSONArray finaljson = new JSONArray();
for (int j = 0; j < 2; j++) {
    System.out.println("Enter Version Name");
    String vName = input.next();
    System.out.println("Enter Version Key");
    ;
    String vKey = input.next();
    JSONObject root = new JSONObject();
    if (!root.has("versionName")) {
        root.put("versionName", vName);
        root.put("versionKey", vKey);
    }

    JSONArray issue = new JSONArray();
    System.out.println("Enter Epic Name");
    String epicName = input.next();

    System.out.println("Enter Epic Key");
    String epicKey = input.next();
    JSONObject epicData = new JSONObject();
    epicData.put("epickKey", epicKey);
    epicData.put("epickName", epicName);
    issue.put(epicData);

    root.put("issue", issue);
    finaljson.put(root);
}

System.out.println("JSON DATA" + finaljson.toString());

嘿，制作一个 JSON，从代码来看，如果用户多次输入版本名称，则不应添加到根 json 对象中。那么如何限制它。

[
    {
        "versionKey": "vkey1",
        "issue": [
            {
                "epickName": "e1",
                "epickKey": "ekey1"
            }
        ],
        "versionName": "v1"
    },
    {
        "versionKey": "vkey1",
        "issue": [
            {
                "epickName": "e2",
                "epickKey": "eky2"
            }
        ],
        "versionName": "v1"
    }
]

但想要

[
    {
        "versionKey": "vkey1",
        "issue": [
            {
                "epickName": "e1",
                "epickKey": "eky1"
            },
            {
                "epickName": "e2",
                "epickKey": "eky2"
            }
        ],
        "versionName": "v1"
    }
]

你能帮我制作这种类型的动态 json 数据吗

Answer 1

如果我理解正确，您希望输出类似于问题中的第二个 JSON 数组。改变循环位置应该可以解决问题:

Scanner input = new Scanner(System.in);
JSONArray finaljson = new JSONArray();

System.out.println("Enter Version Name");
String vName = input.next();
System.out.println("Enter Version Key");;
String vKey = input.next();
JSONObject root = new JSONObject();
if (!root.has("versionName")) {
    root.put("versionName", vName);
    root.put("versionKey", vKey);
}

JSONArray issue = new JSONArray();
for (int j = 0; j < 2; j++) {
    System.out.println("Enter Epic Name");
    String epicName = input.next();

    System.out.println("Enter Epic Key");
    String epicKey = input.next();
    JSONObject epicData = new JSONObject();
    epicData.put("epickKey", epicKey);
    epicData.put("epickName", epicName);
    issue.put(epicData);
}

root.put("issue", issue);
finaljson.put(root);

System.out.println("JSON DATA" + finaljson.toString());

我用你的输入进行了测试。以下是格式化的 JSON 输出:

[
    {
        "issue": [
            {
                "epickKey": "eky1",
                "epickName": "e1"
            },
            {
                "epickKey": "eky2",
                "epickName": "e2"
            }
        ],
        "versionName": "vkey1",
        "versionKey": "v1"
    }
]