index_en.md

Effective only during serialization (converting Java objects to JSON strings):

• AfterFilter: Adds extra content to the end of the serialized output.
• BeforeFilter: Adds extra content at the beginning of the serialized output.
• NameFilter: Used to modify property names during serialization.
• ContextNameFilter: Same function as NameFilter, but it can modify property names using contextual information.
• ValueFilter: Used to modify property values during serialization.
• ContextValueFilter: Same function as ValueFilter, but it can modify property values using contextual information.
• LabelFilter: Allows customizing the serialization of different fields based on different scenario labels (Label).
• PascalNameFilter: This is a specific implementation of NameFilter that capitalizes the first letter of property names, converting from camelCase to PascalCase.
• PropertyPreFilter: Performs fast filtering based on the property name to decide whether a property should be serialized.
• PropertyFilter: Determines whether a property should be serialized based on its name and value.
• SimplePropertyPreFilter: A simple property pre-filter that controls which fields are serialized by specifying lists of included or excluded properties.

Effective only during deserialization (converting JSON strings to Java objects):

• ExtraProcessor: Used to handle extra fields that exist in the JSON string but not in the Java object during deserialization.
• AutoTypeBeforeHandler: In Fastjson 2.x, it provides AutoType-like functionality during deserialization, using a whitelist mechanism to control which classes are allowed to be deserialized, thus enhancing security.
• ContextAutoTypeBeforeHandler: Also used to handle AutoType, but provides contextual information and has built-in support for some common types.