Question

我有objets列表，并在下面的MVC应用程序中使用以下代码输出它们。

 public JsonResult ConversionInfo(string srcFormat)
        {
            return Json(MetadataDbService.FindBySourceFormat(srcFormat).Select(m => new
            {
                m.ConversionMeta
            }), JsonRequestBehavior.AllowGet);
        }

代码产生这样的结果。每个行/项目都以父对象名称ConversionMeta开头。

[
{"ConversionMeta":{"Id": "delete", "Name": "delete page from PDF", "Description": "You can delete any page from PDF blah blah...",…}},
{"ConversionMeta":{"Id": "delete", "Name": "delete page from PDF", "Description": "You can delete any page from PDF blah blah...",…}}
]

我想得到这样的结果，有什么想法要修改代码吗？

[
{"Id": "delete", "Name": "delete page from PDF", "Description": "You can delete any page from PDF blah blah...",…},
{"Id": "delete", "Name": "delete page from PDF", "Description": "You can delete any page from PDF blah blah...",…}
]

Answer 1

您正在使用new { }将对象包装到包装对象中。

抛弃new { }包装器，然后选择ConversionMeta属性本身。

public JsonResult ConversionInfo(string srcFormat)
{
    return Json(MetadataDbService.FindBySourceFormat(srcFormat).Select(m => m.ConversionMeta), JsonRequestBehavior.AllowGet);
}

Answer 2

我建议创建一个包含所有属性的类，并使用JSON.NET将其序列化为json

您可以通过Nuget安装JSON.NET

PM> Install-Package Newtonsoft.Json

创建一个类数组，并用所有条目填充

然后，您可以使用JsonConvert.SerialzeObject方法创建Json

这是我的代码：

static void Main(string[] args)
{
    ConversionMeta[] conversionMetaArray = new ConversionMeta[3];
    conversionMetaArray[0] = new ConversionMeta()
    {
        Id = "deleted",
        Name = "delete page from PDF",
        Description = "You can delete any page from PDF blah blah..."
    };
    conversionMetaArray[1] = new ConversionMeta()
    {
        Id = "deleted",
        Name = "delete page from PDF",
        Description = "You can delete any page from PDF blah blah..."
    };
    conversionMetaArray[2] = new ConversionMeta()
    {
        Id = "deleted",
        Name = "delete page from PDF",
        Description = "You can delete any page from PDF blah blah..."
    };

    string json = JsonConvert.SerializeObject(conversionMetaArray);
}

这是课程：

class ConversionMeta
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
}

这是输出：

[
{"Id":"deleted","Name":"delete page from PDF","Description":"You can delete any page from PDF blah blah..."},
{"Id":"deleted","Name":"delete page from PDF","Description":"You can delete any page from PDF blah blah..."},
{"Id":"deleted","Name":"delete page from PDF","Description":"You can delete any page from PDF blah blah..."}
]

在没有父对象名称的情况下将对象列表序列化为JSon

2 个答案: