Question

Json string：

{
    "event": {
        "event_name": "Customer Phone Number",
        "operation_type": "Add",
        "transaction_identifier": "1234567890",
        "event_publication_timestamp_millis": "1518464452915",
        "event_publisher": "CIS",
        "event_publisher_identity": "System",
        "event_timestamp_millis": "NONE",
        "event_initiator": "NONE",
        "event_initiator_identity": "NONE"
    },
    "contents": [
        {
            "data_group_name": "customer_identifier",
            "data_fields": [
                {
                    "data_field_name": "company_number",
                    "data_field_type": "string",
                    "data_field_value": "069"
                },
                {
                    "data_field_name": "customer_short_name",
                    "data_field_type": "string",
                    "data_field_value": "marshben"
                },
                {
                    "data_field_name": "tie_breaker",
                    "data_field_type": "string",
                    "data_field_value": "01"
                }
            ]
        },
        {
            "data_group_name": "customer_phone_number",
            "data_fields": [
                {
                    "data_field_name": "phone_number",
                    "data_field_type": "string",
                    "data_field_value": "555-1212"
                },
                {
                    "data_field_name": "phone_type",
                    "data_field_type": "string",
                    "data_field_value": "cell"
                },
                {
                    "data_field_name": "primary_indicator",
                    "data_field_type": "string",
                    "data_field_value": "yes"
                }
            ]
        }

    ]
}

JSONObject rootObject = new JSONObject(result);

        System.out.println("this");

        System.out.println(rootObject.toString());

上面的代码只给出了内容的一部分，如何获取以事件开头的顶级数据。

Here is the output of :

    "contents": [
        {
            "data_group_name": "customer_identifier",
            "data_fields": [
                {
                    "data_field_name": "company_number",
                    "data_field_type": "string",
                    "data_field_value": "069"
                },
                {
                    "data_field_name": "customer_short_name",
                    "data_field_type": "string",
                    "data_field_value": "marshben"
                },
                {
                    "data_field_name": "tie_breaker",
                    "data_field_type": "string",
                    "data_field_value": "01"
                }
            ]
        },
        {
            "data_group_name": "customer_phone_number",
            "data_fields": [
                {
                    "data_field_name": "phone_number",
                    "data_field_type": "string",
                    "data_field_value": "555-1212"
                },
                {
                    "data_field_name": "phone_type",
                    "data_field_type": "string",
                    "data_field_value": "cell"
                },
                {
                    "data_field_name": "primary_indicator",
                    "data_field_type": "string",
                    "data_field_value": "yes"
                }
            ]
        }

    ]
}

我想解析每个元素并读取值。但是json对象只解析字符串的一部分。处理这个字符串的最佳途径是什么。从事件开始的顶级部分非常重要。

Answer 1

对于该示例，您共享我可以看到所有元素都在rootObject变量中。它的顺序已经改变了。

您的输入JSON具有这样的结构

{
 "event": {..},
 "contents": [..]
}

在创建和输出JSON对象时，它会变成这样：

{
 "contents": [..],
 "event": {..}
}

意味着所有字段都在JSONObject中，但只是订单已更改，这是预期的，因为没有必要按照JSON规范维护字段的顺序。您可以通过按字段名称解析来验证字段确实存在。对于上面的例子：

System.out.println(rootObject.get("event").toString());

JSON字符串不解析字符串的标题部分

1 个答案: