I'm using the Newtonsoft JSON serializer and it works for most objects.
Unfortunately I get a JsonSerializationException
when I try to serialize a large object, one of whose members throws a NullReferenceException
.
Is there anyway to ignore the offending member and serialize the rest of the object?
I'm thinking perhaps in the JsonSerializerSettings
?
Here's a simplified version of what I want to do:
private class TestExceptionThrowingClass
{
public string Name { get { return "The Name"; } }
public string Address { get { throw new NullReferenceException(); } }
public int Age { get { return 30; } }
}
[Test]
public void CanSerializeAClassWithAnExceptionThrowingMember()
{
// Arrange
var toSerialize = new TestExceptionThrowingClass();
// Act
var serializerSettings = new Newtonsoft.Json.JsonSerializerSettings();
serializerSettings.MaxDepth = 5;
serializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
serializerSettings.MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore;
serializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore;
serializerSettings.ObjectCreationHandling = Newtonsoft.Json.ObjectCreationHandling.Reuse;
serializerSettings.DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore;
var result = Newtonsoft.Json.JsonConvert.SerializeObject(toSerialize);
// Assert
Assert.That(result, Is.EqualTo(@"{""Name"":""The Name"",""Age"":30}"));
}
And here's the stack trace:
at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues(JsonWriter writer, Object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, JsonContract& memberContract, Object& memberValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
at Newtonsoft.Json.JsonConvert.SerializeObject(Object value, Type type, Formatting formatting, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.SerializeObject(Object value)
at AspectsProject.Aspects.CachingPolicy.CachingPolicyCacheKeyCreatorTests.CanSerializeAClassWithAnExceptionThrowingMember() in D:Devest.cs:line 169
--NullReferenceException
at AspectsProject.Aspects.CachingPolicy.CachingPolicyCacheKeyCreatorTests.TestExceptionThrowingClass.get_Address() in D:Devest.cs:line 149
at GetAddress(Object )
at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)
I'm happy to use a different JSON serializer if someone knows one that will do this.
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