读取JSON文件时出错

Question

我需要解析/读取这个json文件。

  [{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"interior","shotTypeAbbreviation":"I","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_i_oem_1_423.jpg"],"source":"OEM","vdpOrder":3},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"R","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_r_oem_1_300.jpg"],"source":"OEM","vdpOrder":6},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"RQ","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_1_196.jpg"],"source":"OEM","vdpOrder":2},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"FQ","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_1_396.jpg"],"source":"OEM","vdpOrder":1},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"RQ","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_rq_oem_2_400.jpg"],"source":"OEM","vdpOrder":7},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"FQ","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_98.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_fq_oem_2_175.jpg"],"source":"OEM","vdpOrder":5},{"children":[],"id":"dam/photo/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1","site":"dam","authorNames":["Volvo Cars of North America, Inc."],"captionTranscript":"2001 Volvo V70 XC AWD 4dr Wagon ","type":"PHOTOS","subType":"exterior","shotTypeAbbreviation":"S","photoSrcs":["/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_185.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_400.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_131.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_196.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_396.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_87.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_276.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_300.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_423.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_175.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_500.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_150.jpg","/volvo/v70/2001/oem/2001_volvo_v70_wagon_xc_s_oem_1_98.jpg"],"source":"OEM","vdpOrder":4}] 

这是我用于使用JSON.net反序列化的类代码

  public class Photo { public List<Children> children; } public class Children { public string id; public string site; public List<string> authorNames; public string captionTranscript; public string type; public string subType; public string shotTypeAbbreviation; public List<string> photoSrcs; public string source; public string vdpOrder; } StreamReader sr = new StreamReader(_filename); string str = sr.ReadToEnd(); sr.Close(); Photo p = JsonConvert.DeserializeObject<Photo>(str);// this line gives error 

但我收到错误

无法将当前JSON数组（例如[1,2,3]）反序列化为类型“ WindowsFormsApplication1.Photo”，因为该类型需要JSON对象（例如{“ name”：“ value”}）才能正确反序列化。 要解决此错误，可以将JSON更改为JSON对象（例如{“ name”：“ value”}），也可以将反序列化类型更改为数组，或者将实现集合接口的类型（例如ICollection，IList）更改为List，例如List从JSON数组反序列化。 还可以将JsonArrayAttribute添加到类型中，以强制其从JSON数组反序列化。 路径''，第1行，位置1。

Answer 1

您的json是一个数组/列表。 所以反序列化到一个列表。

var photos = JsonConvert.DeserializeObject<List<Photo>>(json);

---

public class Photo
{
    public List<object> children { get; set; }
    public string id { get; set; }
    public string site { get; set; }
    public List<string> authorNames { get; set; }
    public string captionTranscript { get; set; }
    public string type { get; set; }
    public string subType { get; set; }
    public string shotTypeAbbreviation { get; set; }
    public List<string> photoSrcs { get; set; }
    public string source { get; set; }
    public int vdpOrder { get; set; }
}