JSON解析值未显示

本文关键字：显示 JSON | 更新日期: 2023-09-27 18:07:19

所以我使用JSON.net来解析我的JSON，但是我得到了List of List 值对象的错误输出。下面是我的JSON.net代码:

var reader = new StreamReader(GenerateStreamFromString(decodedString));
            var rootObject = JsonConvert.DeserializeObject<RootObject>(reader.ReadToEnd());
txtOut.Text = rootObject.Results.output1.value.ColumnNames[0].ToString() + " : " + 
rootObject.Results.output1.value.Values[0].ToString();

下面是JSON类:

public class Value
{
    public List<string> ColumnNames { get; set; }
    public List<string> ColumnTypes { get; set; }
    public List<List<string>> Values { get; set; }
}
public class Output1
{
    public string type { get; set; }
    public Value value { get; set; }
}
public class Results
{
    public Output1 output1 { get; set; }
}
public class RootObject
{
    public Results Results { get; set; }
}

输出应该是:

Scored Probabilities for Class "BackPocket" : 0.37687685364

而我得到:

Scored Probabilities for Class "BackPocket" : System.Collections.Generic.List`1[System.String]

我哪里做错了?

谢谢。

注:下面是一个JSON示例:

{"Results":{"output1":{"type":"table","value":{"ColumnNames":["Scored Probabilities for Class '"BackPocket'"","Scored Probabilities for Class '"Ear'"","Scored Probabilities for Class '"Handbag'"","Scored Probabilities for Class '"SidePocket'"","Scored Labels"],"ColumnTypes":["Double","Double","Double","Double","String"],"Values":[["0.0249993801116943","0.999469399452209","0.00426889630034566","0.00104729761369526","Ear"]]}}}}

JSON解析值未显示

这是一个列表的列表。你目前只索引了一层深度。你需要索引两层深。

txtOut.Text = rootObject.Results.output1.value.ColumnNames[0].ToString() + " : " + 
rootObject.Results.output1.value.Values[0][0].ToString();

因为元素0是一个列表，你可以使用string.Join来获得一个可打印的字符串。

txtOut.Text = rootObject.Results.output1.value.ColumnNames[0].ToString() + " : " +
                string.Join(";",rootObject.Results.output1.value.Values[0]);

输出将是:

Scored Probabilities for Class "BackPocket" : 0.0249993801116943;0.999469399452209;0.00426889630034566;0.00104729761369526;Ear

试试这个作为你的Json class/Classes 

[DataContract]    
public class Value
{
[DataMember]
public List<string> ColumnNames { get; set; }
[DataMember]
public List<string> ColumnTypes { get; set; }
[DataMember]
public List<List<string>> Values { get; set; }
}
[DataContract]
public class Output1
{
[DataMember]
public string type { get; set; }
[DataMember]
public Value value { get; set; }
}
[DataContract]
public class Results
{
[DataMember]
public Output1 output1 { get; set; }
}
[DataContract]
public class RootObject
{
[DataMember]
public Results Results { get; set; }
}
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