Question

我在请求正文中传递了json

{
  "areaId": "1",
  "cat": "2",
  "subcat": "41",
  "location": "1100",
  "sublocation": "11001",
  "briefDescription": "thissss is brief description",
  "detailedDescription": "this is detailed obj",
  "images": {
    "image1": "base64 string",
    "image2": "base64 string"
  }
}

我的处理程序看起来像这样

[HttpPost]
public HttpResponseMessage Post(Dictionary<string,object> data)
{
    int areaId = Int32.Parse(data["areaId"].ToString()); //this is how i am getting area from it 

    return Request.CreateResponse(HttpStatusCode.OK, new { some objects to return });
}

如何在字典中从这个json中提取图像？什么是有效的方式

Answer 1

由于这是一个JSON对象，您可以使用C＃JSON库，例如JSON.Net

您可以使用Visual Studio的“粘贴JSON作为类”功能来获取类结构：

public class Rootobject
{
    public string areaId { get; set; }
    public string cat { get; set; }
    public string subcat { get; set; }
    public string location { get; set; }
    public string sublocation { get; set; }
    public string briefDescription { get; set; }
    public string detailedDescription { get; set; }
    public Images images { get; set; }
}

public class Images
{
    public string image1 { get; set; }
    public string image2 { get; set; }
}

然后使用JsonConvert.DeserializeObject方法将json反序列化为“RootObject”实例

如果您想将图像视为字典，以下结构也适用于json.net：

public class Rootobject
{
    public string areaId { get; set; }
    public string cat { get; set; }
    public string subcat { get; set; }
    public string location { get; set; }
    public string sublocation { get; set; }
    public string briefDescription { get; set; }
    public string detailedDescription { get; set; }
    public Dictionary<string, string> images { get; set; }
}

检查https://www.newtonsoft.com/json/help/html/DeserializeDictionary.htm

Answer 2

如果您想使用Linq to Json方法，可以按照以下步骤操作：

JObject o = JObject.Parse(j);
Dictionary<string, string> images = new Dictionary<string, string>();
foreach(JProperty im in o["images"])
{
    images.Add(im.Name, (string)im.Value);
}

其中j是包含您的JSON的字符串。

解析c＃Dictionary <string，object>数据中的对象字典

2 个答案: