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abp/docs/en/JSON.md

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# JSON
The ABP Framework provides an abstraction to work with JSON. Having such an abstraction has some benefits;
* You can write library independent code. Therefore, you can change the underlying library with the minimum effort and code change.
* You can use the predefined converters defined in the ABP without worrying about the underlying library's internal details.
> The JSON serialization system is implemented with the [Volo.Abp.Json](https://www.nuget.org/packages/Volo.Abp.Json) NuGet package. Most of the time, you don't need to manually [install it](https://abp.io/package-detail/Volo.Abp.Json) since it comes pre-installed with the [application startup template](Startup-Templates/Application.md).
## IJsonSerializer
You can inject `IJsonSerializer` and use it for JSON operations. Here is the available operations in the `IJsonSerializer` interface.
```csharp
public interface IJsonSerializer
{
string Serialize(object obj, bool camelCase = true, bool indented = false);
T Deserialize<T>(string jsonString, bool camelCase = true);
object Deserialize(Type type, string jsonString, bool camelCase = true);
}
```
Usage Example:
```csharp
public class ProductManager
{
public IJsonSerializer JsonSerializer { get; }
public ProductManager(IJsonSerializer jsonSerializer)
{
JsonSerializer = jsonSerializer;
}
public void SendRequest(Product product)
{
var json= JsonSerializer.Serialize(product);
// Left blank intentionally for demo purposes...
}
}
```
## Configuration
### AbpJsonOptions
`AbpJsonOptions` type provides options for the JSON operations in the ABP Framework.
Properties:
* **DefaultDateTimeFormat(`string`)**: Default `DateTime` format.
* **UseHybridSerializer(`bool`)**: True by default. Boolean field indicating whether the ABP Framework uses the hybrid approach or not. If the field is true, it will try to use `System.Json.Text` to handle JSON if it can otherwise use the `Newtonsoft.Json.`
* **Providers(`ITypeList<IJsonSerializerProvider>`)**: List of JSON serializer providers implementing the `IJsonSerializerProvider` interface. You can create and add custom serializers to the list, and the ABP Framework uses them automatically. When the `Serialize` or `Deserialize` method is called on the `IJsonSerializer` interface, the ABP Framework calls the `CanHandle` methods of the given providers in reverse order and uses the first provider that returns `true` to do the JSON operation.
### AbpSystemTextJsonSerializerOptions
`AbpSystemTextJsonSerializerOptions` provides options for `System.Text.Json` usage.
Properties:
- **JsonSerializerOptions(`System.Text.Json.JsonSerializerOptions`)**: Global options for System.Text.Json library operations. See [here](https://docs.microsoft.com/en-us/dotnet/api/system.text.json.jsonserializeroptions) for reference.
- **UnsupportedTypes(`ITypeList`)**: List of the unsupported types. You can add types of the unsupported types to the list and, the hybrid JSON serializer automatically uses the `Newtonsoft.Json` library instead of `System.Text.Json`.