在c#中使用json.net反序列化json对象,读取/强制转换错误

本文关键字:json 读取 错误 转换 反序列化 net 对象 | 更新日期: 2023-09-27 17:51:01

我正在对json文件进行反序列化,该文件具有以下字段:

 {    'IdTechnician': '4',    'DescTechnician': 'Surname Name',    'LoginTechnician': 'username',    'TypeTechnician': '1',    'TelephoneTechnician': '+123456789',    'SignatureTechnician': 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                                                o''u000bP????''u0006??T??/w?''u0000''u0007[???????',    'MailTechnician': 'email@email.it',    'WbsTechnician': 'xyz',    'NumberPincerTechnician': ''  }

和下面的代码

        using (StreamReader file = File.OpenText(@"path''file.json"))
        {
            JsonSerializer serializer = new JsonSerializer();
            tbl_tech tech = (tbl_tech)serializer.Deserialize(file, typeof(tbl_tech));
        }

这是我使用的对象

public partial class tbl_tech
{
    public tbl_tech()
    {
        this.tbl_odl = new HashSet<tbl_odl>();
        this.tbl_pdr = new HashSet<tbl_pdr>();
    }
    public long IdTechnician { get; set; }
    public string DescTechnician { get; set; }
    public string LoginTechnician { get; set; }
    public string TelephoneTechnician { get; set; }
    public string SignatureTechnician { get; set; }
    public string MailTechnician { get; set; }
    public string WbsTechnician { get; set; }
    public string NumberPincerTechnician { get; set; }
    public Nullable<long> TypeTechnician { get; set; }
    public virtual ICollection<tbl_odl> tbl_odl { get; set; }
    public virtual ICollection<tbl_pdr> tbl_pdr { get; set; }
}

,这是visual studio生成的错误。

{"无法从系统强制转换或转换。startservice .tbl_tech的字符串。"}

我不明白的是,对象的字段是完全相同的那些我的对象,所以在哪里错误的赋值给json ?我有什么问题吗?由于

在c#中使用json.net反序列化json对象,读取/强制转换错误

json是一个对象数组,而不是一个对象。看到开头/结尾的[]了吗?

tbl_tech[] tech = (tbl_tech[])serializer.Deserialize(sr, typeof(tbl_tech[]));

如果我像这样修改代码:

public partial class tbl_tech
{
        public tbl_tech()
        {
            //this.tbl_odl = new HashSet<tbl_odl>();
            //this.tbl_pdr = new HashSet<tbl_pdr>();
        }
        public long IdTechnician { get; set; }
        public string DescTechnician { get; set; }
        public string LoginTechnician { get; set; }
        public string TelephoneTechnician { get; set; }
        public string SignatureTechnician { get; set; }
        public string MailTechnician { get; set; }
        public string WbsTechnician { get; set; }
        public string NumberPincerTechnician { get; set; }
        public Nullable<long> TypeTechnician { get; set; }
        //public virtual ICollection<tbl_odl> tbl_odl { get; set; }
        //public virtual ICollection<tbl_pdr> tbl_pdr { get; set; }
    }

deserialization工作正常。因为现在你的jsonType是相似的

在创建JSon表示时尝试使用json2sharp。

我也从数字中去掉了"'":

[{'IdTechnician': 4, 'DescTechnician': 'Surname Name', 'LoginTechnician': 'name',    'TypeTechnician': 1, 'TelephoneTechnician': '+123456789', 'SignatureTechnician': 'signaturepath', 'MailTechnician': 'email@email.com', 'WbsTechnician': 'XYZ',    'NumberPincerTechnician': 1}]

给出如下模型:

public class RootObject
{
    public int IdTechnician { get; set; }
    public string DescTechnician { get; set; }
    public string LoginTechnician { get; set; }
    public int TypeTechnician { get; set; }
    public string TelephoneTechnician { get; set; }
    public string SignatureTechnician { get; set; }
    public string MailTechnician { get; set; }
    public string WbsTechnician { get; set; }
    public int NumberPincerTechnician { get; set; }
}

你可以用下面的方法反序列化它:

IList<RootObject> result = new List<RootObject>();
using (StreamReader file = File.OpenText(@"path''file.json"))
{
    result = JsonConvert.DeserializeObject<List<RootObject>>(file.ReadToEnd());
}