JSON.NET Deserealization

时间:2013-07-03 11:19:05

标签: c# json json.net json-deserialization

我有下一个JSON回调:

{
   "id":"1",
   "jsonrpc":"2.0",
   "result":{
   "articles":[
     {
        "date":1367582340000,
        "id":6917,
        "title":"Some Title",
        "author":"Name Surname",
        "event_date":1367584560000,
        "text":"blabla"            
     }
  ]
}
}

我想使用JSON.NET

反序列化它

我写了下一段代码:

    class News
    {
        private string jsonrpc;
        private string id;
        private Result result;

        [JsonProperty("jsonrpc")]
        public string Jsonrpc
        {
            get { return jsonrpc; }
            set { jsonrpc = value; }
        }

        [JsonProperty("id")]
        public string Id
        {
            get { return id; }
            set { id = value; }
        }

        [JsonProperty("result")]
        public Result Result
        {
            get { return result; }
            set { result = value; }
        }
    }
    public class Result
    {
        public List<Article> articles;
        [JsonProperty("articles")]
        public List<Article> Articles
        {
            get { return articles; }
            set { articles = value; }
        }
    }
    public class Article
    {
        public string text;
        public int id;
        public int date;
        public string title;
        public string author;
        public string imageURL;
        [JsonProperty("text")]
        public string Text
        {
            get { return text; }
            set { text = value; }
        }
        [JsonProperty("id")]
        public int Id
        {
            get { return id; }
            set { id = value; }
        }
        [JsonProperty("date")]
        public int Date
        {
            get { return date; }
            set { date = value; }
        }
        [JsonProperty("title")]
        public string Title
        {
            get { return title; }
            set { title = value; }
        }
        [JsonProperty("author")]
        public string Author
        {
            get { return author; }
            set { author = value; }
        }
        [JsonProperty("imageURL")]
        public string ImageURL
        {
            get { return imageURL; }
            set { imageURL = value; }
        }
    }

用法:

 string JSON = reader.ReadToEnd();
 News ent = JsonConvert.DeserializeObject<News>(JSON) as News;

跌倒错误:

Newtonsoft.Json.DLL中出现“Newtonsoft.Json.JsonSerializationException”类型的异常,但未在用户代码中处理

有什么问题?

1 个答案:

答案 0 :(得分:2)

  

“结果”中已存在名称为“文章”的成员。使用JsonPropertyAttribute指定另一个名称。

制作articles字段private

private List<Article> articles;
  

'Article'上已存在名为'text'的成员。使用JsonPropertyAttribute指定另一个名称。

再次相同:

private string text;
private int id;
private int date;
private string title;
private string author;
private string imageURL;

或更好 - 使用自动实现的属性并丢弃字段,即

[JsonProperty("text")]
public string Text {get;set;}
  

算术运算导致溢出。

Date成为long

[JsonProperty("date")]
public long Date {get;set;}

以后是我的整个工作班:

class News
{
    [JsonProperty("jsonrpc")]
    public string Jsonrpc {get;set;}
    [JsonProperty("id")]
    public string Id { get; set; }
    [JsonProperty("result")]
    public Result Result { get; set; }
}
public class Result
{
    private List<Article> articles = new List<Article>();
    [JsonProperty("articles")]
    public List<Article> Articles { get { return articles; }}
}
public class Article
{
    [JsonProperty("text")]
    public string Text {get;set;}
    [JsonProperty("id")]
    public int Id {get;set;}
    [JsonProperty("date")]
    public long Date {get;set;}
    [JsonProperty("title")]
    public string Title {get;set;}
    [JsonProperty("author")]
    public string Author { get; set; }
    [JsonProperty("imageURL")]
    public string ImageURL { get; set; }
}

请注意,如果您只是反序列化,则甚至不需要JsonProperty - 因为除了大小写以外,名称都是相同的,所以只有在您序列化的情况下才有意义