如何在运行时将属性添加到JSON（C＃）

Question

注意：我正在使用System.Text.Json包下面是我从数据库中获取的JSON。我必须遍历JSON中的每个键，并检查键名称中是否有句点（.）；如果是这样，我需要在JSON中添加一个值为required的属性true，以提供运行时验证：

validate:{"required", true}

这是我的JSON：

{
    "display": "wizard",
    "settings": {},
    "components": [{
        "title": "Event Information",
        "label": "Event Information",
        "type": "panel",
        "key": "EventInformation",
        "components": [{
            "label": "Row1Columns",
            "columns": [{
                "components": [{
                    "label": "Event Date",
                    "format": "dd/MM/yyyy hh:mm a",
                    "tableView": false,
                    "datePicker": {
                        "disableWeekends": false,
                        "disableWeekdays": false
                    },
                    "validate": {
                        "unique": true
                    },
                    "key": "Event.EventDate",
                    "type": "datetime",
                    "input": true,
                    "suffix": "<i ref=\"icon\" class=\"fa fa-calendar\" style=\"\"></i>",
                    "widget": {
                        "type": "calendar",
                        "displayInTimezone": "viewer",
                        "language": "en",
                        "useLocaleSettings": false,
                        "allowInput": true,
                        "mode": "single",
                        "enableTime": true,
                        "noCalendar": false,
                        "format": "dd/MM/yyyy hh:mm a",
                        "hourIncrement": 1,
                        "minuteIncrement": 1,
                        "time_24hr": false,
                        "minDate": null,
                        "disableWeekends": false,
                        "disableWeekdays": false,
                        "maxDate": null
                    }
                }],
                "width": 6,
                "offset": 0,
                "push": 0,
                "pull": 0
            }, {
                "components": [{
                    "label": "Duration (minutes)",
                    "mask": false,
                    "spellcheck": true,
                    "tableView": false,
                    "delimiter": false,
                    "requireDecimal": false,
                    "inputFormat": "plain",
                    "key": "Event.Duration",
                    "type": "number",
                    "input": true
                }],
                "width": 6,
                "offset": 0,
                "push": 0,
                "pull": 0
            }],
            "tableView": false,
            "key": "row1Columns",
            "type": "columns",
            "input": false
        }, {
            "label": "Row2Columns",
            "columns": [{
                "components": [{
                    "label": "Event Category",
                    "widget": "choicesjs",
                    "tableView": true,
                    "dataSrc": "custom",
                    "data": {
                        "custom": "values = getEventCategoryValues()"
                    },
                    "valueProperty": "AgencyEventCategoryId",
                    "template": "<span>{{ item.text }}</span>",
                    "selectThreshold": 0.3,
                    "validate": {
                        "required": true
                    },
                    "key": "Event.AgencyEventCategoryId",
                    "type": "select",
                    "indexeddb": {
                        "filter": {}
                    },
                    "input": true
                }],
                "width": 6,
                "offset": 0,
                "push": 0,
                "pull": 0
            }, {
                "components": [{
                    "label": "Attendance",
                    "widget": "choicesjs",
                    "tableView": true,
                    "multiple": false,
                    "dataSrc": "custom",
                    "data": {
                        "custom": "values = getAttendanceValues()"
                    },
                    "valueProperty": "AgencyEventAttendanceId",
                    "template": "<span>{{ item.text }}</span>",
                    "selectThreshold": 0.3,
                    "validate": {
                        "required": true,
                    },
                    "key": "Event.AgencyEventAttendanceId",
                    "type": "select",
                    "indexeddb": {
                        "filter": {}
                    },
                    "input": true
                }],
                "width": 6,
                "offset": 0,
                "push": 0,
                "pull": 0
            }],
            "tableView": false,
            "key": "row2Columns",
            "type": "columns",
            "input": false
        }, {
            "label": "Event Options",
            "widget": "choicesjs",
            "tableView": true,
            "multiple": true,
            "dataSrc": "custom",
            "data": {
                "custom": "values = getEventManagerValues(data.Event.AgencyEventCategoryId)"
            },
            "template": "<span>{{ item.text }}</span>",
            "refreshOn": "Event.AgencyEventCategoryId",
            "clearOnRefresh": true,
            "selectThreshold": 0.3,
            "calculateServer": false,
            "validate": {
                "required": true,
                "multiple": true
            },
            "key": "Event.EventDetail",
            "type": "select",
            "indexeddb": {
                "filter": {}
            },
            "input": true
        }, {
            "label": "Casenote",
            "wysiwyg": true,
            "autoExpand": true,
            "spellcheck": true,
            "tableView": true,
            "calculateServer": false,
            "key": "Event.EventCasenote[0].Casenote",
            "type": "textarea",
            "input": true
        }],
        "input": false,
        "tableView": false,
        "breadcrumbClickable": true,
        "buttonSettings": {
            "previous": true,
            "cancel": true,
            "next": true
        },
        "collapsible": false
    }]
} 

Answer 1

其中一种选择是将json解析为JObject并通过Newtonsoft的Json.NET向其添加属性：

JObject

要添加新对象，您可以使用

var obj = JObject.Parse("{'key':'value'}");
obj.Add("required", true);
Console.WriteLine(obj); // { "key": "value", "required": true }

的此重载：

Add

因此整个解决方案将如下所示：

obj.Add("validate", JObject.FromObject(new { required = true }));

Answer 2

对我来说这是一项有趣的任务，所以这就是我写的内容

var obj = JObect.Parse(your_json);

foreach(var token in obj.DescendantsAndSelf().ToList()) // ToList is important!!!
{
    if(token is JObject xObj)
    {
        // check your conditions for adding property
        // check if object does not have "validate" property
        if(satisfies_all_conditions)
        {
            xObj.Add("validate", JObject.FromObject(new { required = true }));
        }
    }
}

如果不存在，此代码将在每个“必需”对象属性中添加。您所需要的-仅添加Validation方法并在if块中调用它。并且最好添加其他验证，如果存在“必需”属性，则将不会继续检查所有属性