Question

所以我使用JSON.net来解析我的JSON，但是List of List 值对象的输出错误。这是我的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();

以下是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; }
}

输出应为：

Scored Probabilities for Class "BackPocket" : 0.37687685364

我得到了：

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

我做错了哪里？

感谢。

P.S。以下是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"]]}}}}

Answer 1

这是一个列表清单。您目前只对一个级别进行索引编制。您需要深入索引两个级别。

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

Answer 2

因为元素0是一个列表，您可以使用string.Join来获取可打印的字符串..

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

OUTPUT将是：

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

Answer 3

尝试将此作为您的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; }
}

JSON解析值未显示

3 个答案: