c# - 如何在 C# MVC 中生成正确的 JSON 结果

Question

我正在用 C# 开发一个 MVC 应用程序，并希望生成像这样的 JSON 结果:

var json = {
    id: "1",
    name: "Ram | 1",
    data: {},
    children: [{
        id: "2",
        name: "Hari | 2",
        data: {},
        children: [{
            id: "Sam3",
            name: "2.4",
            data: {},
            children: []
        }, {
            id: "4",
            name: "Jon | 4",
            data: {},
            children: [{
                id: "5",
                name: "Smith | 5",
                data: {},
                children: [{
                    id: "6",
                    name: "Max | 6",
                    data: {},
                    children: []
                }]
            }]
        }]
    }, {
        id: "7",
        name: "Himanshu | 7",
        data: {},
        children: [{
            id: "8",
            name: "Jack | 8",
            data: {},
            children: [{
                id: "9",
                name: "Mad | 9",
                data: {},
                children: [{
                    id: "10",
                    name: "Jacky | 10",
                    data: {},
                    children: []
                }, {
                    id: "11",
                    name: "Anchor | 11",
                    data: {},
                    children: []
                }]
            }, {
                id: "12",
                name: "Dam | 12",
                data: {},
                children: [{
                    id: "13",
                    name: "Xyz | 13",
                    data: {},
                    children: []
                }]
            }, {
                id: "14",
                name: "History | 14",
                data: {},
                children: [{
                    id: "15",
                    name: "java | 15",
                    data: {},
                    children: []
                }, {
                    id: "16",
                    name: "Blue | 16",
                    data: {},
                    children: []
                }, {
                    id: "17",
                    name: "Kali | 17",
                    data: {},
                    children: []
                }, {
                    id: "18",
                    name: "lon | 18",
                    data: {},
                    children: []
                }]
            }]
        }]
    }]
};`

我在 C# 中的 JSON 函数:

[HttpPost]
    public JsonResult CalculateTreeView(int sid)
    {
        /*
            Some Code Logic
        */
        if (res != null)
            if (res.l_id != 0)
                return Json(new { id = res.id, name = res.name + " | " + res.id, data = new { }, children = new object[] { CalculateTreeView(res.l_id) } });
            else
                return Json(new { id = res.id, name = res.name + " | " + res.id, data = new { }, children = new object[] { } });
        else
            return Json(new { id = res.id, name = res.name + " | " + res.id, data = new { }, children = new object[] { } });
    }

我的这个 C# 函数返回奇怪的输出我不知道为什么..

{
"id":1,
"name":"anant | 1",
"data":{},
"children":[{
        "ContentEncoding":null,
        "ContentType":null,
        "Data":{
            "id":2,
            "name":"Samir | 2",
            "data":{},
            "children":[{
                    "ContentEncoding":null,
                    "ContentType":null,
                    "Data":{
                        "id":4,
                        "name":"fjyfyj | 4",
                        "data":{},
                        "children":[{
                                "ContentEncoding":null,
                                "ContentType":null,
                                "Data":{
                                    "id":8,
                                    "name":"cdasdasd | 8",
                                    "data":{},
                                    "children":[]
                                    },
                                "JsonRequestBehavior":1,
                                "MaxJsonLength":null,
                                "RecursionLimit":null
                                }]
                            },
                        "JsonRequestBehavior":1,
                        "MaxJsonLength":null,
                        "RecursionLimit":null
                        }]
                    },
                    "JsonRequestBehavior":1,
                    "MaxJsonLength":null,
                    "RecursionLimit":null
            }]
        }

请帮助我如何生成正确的 JSON 格式。

Answer 1

在您的情况下，ContentEncoding、ContentType 等。这是返回 Json() 方法的字段。发生这种情况是因为它是响应的 MVC JSON 序列化的一部分，您不需要它。

你应该避免的是创建单独的方法，它将返回你的匿名对象(它应该看起来像你的 Controller 方法，但没有 JSON 序列化)并且比你应该将它传递给 Controller ​​中的 Json() 函数。