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[英]Deserializing JSON search results into strongly typed lists (JSON.NET)
[英]Strongly typed Object[] in Json.Net
我有一个困扰我很多的问题。 我使用JSON.Net来序列化/反序列化对象。 我使用此代码通过其参数类型调用方法。
如果运行以下代码,我将得到一个对象[] {int,int}
然后,我使用Json.Net进行序列化/反序列化,并在此过程之后变为object [] {long,long}
现在我的问题是:如何更改以下代码以保留类型和值?
static class Program
{
static byte[] ObjectAsByteArray(object data)
{
string text = JsonConvert.SerializeObject(data, Formatting.None, new JsonSerializerSettings()
{
Formatting=Formatting.Indented,
TypeNameHandling = TypeNameHandling.All,
TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
});
return Encoding.UTF8.GetBytes(text);
}
static T ByteArrayAsObject<T>(byte[] data)
{
Object answer = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(data), typeof(T), new JsonSerializerSettings()
{
Formatting = Formatting.Indented,
TypeNameHandling = TypeNameHandling.All,
TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
});
return (T)answer;
}
static int Multiply(int a, int b)
{
return a * b;
}
static object[] ArgumentsOf(Expression<Action> expression)
{
MethodCallExpression outermostExpression = expression.Body as MethodCallExpression;
object[] Params = outermostExpression.Arguments.Cast<ConstantExpression>().Select(x => x.Value).ToArray();
return Params;
}
[STAThread]
static void Main()
{
object[] Arguments = ArgumentsOf(() => Multiply(5, 100));
byte[] ArgAsByte = ObjectAsByteArray(Arguments);
object[] DeserializedArguments = ByteArrayAsObject<object[]>(ArgAsByte);
}
}
您需要将ArgumentsOf更改为泛型,否则返回类型为System.Object的数组,该数组序列化为
"$type": "System.Object[], mscorlib",
但是,如果您指定int的特定类型,它将序列化为:
"$type": "System.Int32[], mscorlib",
像这样:
static T[] ArgumentsOf<T>(Expression<Func<T>> expression)
{
MethodCallExpression outermostExpression = expression.Body as MethodCallExpression;
var Params = outermostExpression.Arguments.Cast<ConstantExpression>().Select(x => (T)x.Value).ToArray();
return Params;
}
那么整个样本将如下所示:
static class Program
{
static byte[] ObjectAsByteArray(object data)
{
string text = JsonConvert.SerializeObject(data, Newtonsoft.Json.Formatting.None, new JsonSerializerSettings()
{
Formatting=Newtonsoft.Json.Formatting.Indented,
TypeNameHandling = TypeNameHandling.All,
TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
});
return Encoding.UTF8.GetBytes(text);
}
static T ByteArrayAsObject<T>(byte[] data)
{
var answer = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(data), typeof(T), new JsonSerializerSettings()
{
Formatting = Newtonsoft.Json.Formatting.Indented,
TypeNameHandling = TypeNameHandling.All,
TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
});
return (T)answer;
}
static int Multiply(int a, int b)
{
return a * b;
}
static T[] ArgumentsOf<T>(Expression<Func<T>> expression)
{
MethodCallExpression outermostExpression = expression.Body as MethodCallExpression;
var Params = outermostExpression.Arguments.Cast<ConstantExpression>().Select(x => (T)x.Value).ToArray();
return Params;
}
[STAThread]
static void Main()
{
var Arguments = ArgumentsOf(() => Multiply(5, 100));
byte[] ArgAsByte = ObjectAsByteArray(Arguments);
var DeserializedArguments = ByteArrayAsObject<int[]>(ArgAsByte);
}
}
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