org.springframework.http.codec.json

Class KotlinSerializationJsonEncoder

java.lang.Object

org.springframework.core.codec.AbstractEncoder<Object>

org.springframework.http.codec.json.KotlinSerializationJsonEncoder

All Implemented Interfaces:

Encoder<Object>

public class KotlinSerializationJsonEncoder
extends AbstractEncoder<Object>

Encode from an Object stream to a byte stream of JSON objects using kotlinx.serialization.

This encoder can be used to bind @Serializable Kotlin classes, open polymorphic serialization is not supported. It supports application/json and application/*+json with various character sets, UTF-8 being the default.

Since:

5.3

Author:

Sebastien Deleuze

Field Summary

Fields inherited from class org.springframework.core.codec.AbstractEncoder

logger

Constructor Summary

Constructors

Constructor and Description
KotlinSerializationJsonEncoder()
KotlinSerializationJsonEncoder(kotlinx.serialization.json.Json json)

Method Summary

Modifier and Type	Method and Description
boolean	canEncode(ResolvableType elementType, MimeType mimeType) Whether the encoder supports the given source element type and the MIME type for the output stream.
reactor.core.publisher.Flux<DataBuffer>	encode(org.reactivestreams.Publisher<?> inputStream, DataBufferFactory bufferFactory, ResolvableType elementType, MimeType mimeType, Map<String,Object> hints) Encode a stream of Objects of type T into a DataBuffer output stream.
DataBuffer	encodeValue(Object value, DataBufferFactory bufferFactory, ResolvableType valueType, MimeType mimeType, Map<String,Object> hints) Encode an Object of type T to a data buffer.

Methods inherited from class org.springframework.core.codec.AbstractEncoder

getEncodableMimeTypes, getLogger, setLogger

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

KotlinSerializationJsonEncoder

public KotlinSerializationJsonEncoder()

KotlinSerializationJsonEncoder

public KotlinSerializationJsonEncoder(kotlinx.serialization.json.Json json)

Method Detail

canEncode

public boolean canEncode(ResolvableType elementType,
                         @Nullable
                         MimeType mimeType)

Description copied from interface: Encoder

Whether the encoder supports the given source element type and the MIME type for the output stream.

Specified by:

canEncode in interface Encoder<Object>

Overrides:

canEncode in class AbstractEncoder<Object>

Parameters:

elementType - the type of elements in the source stream

mimeType - the MIME type for the output stream (can be null if not specified)

Returns:

true if supported, false otherwise

encode

public reactor.core.publisher.Flux<DataBuffer> encode(org.reactivestreams.Publisher<?> inputStream,
                                                      DataBufferFactory bufferFactory,
                                                      ResolvableType elementType,
                                                      @Nullable
                                                      MimeType mimeType,
                                                      @Nullable
                                                      Map<String,Object> hints)

Description copied from interface: Encoder

Encode a stream of Objects of type T into a DataBuffer output stream.

Parameters:

inputStream - the input stream of Objects to encode. If the input should be encoded as a single value rather than as a stream of elements, an instance of Mono should be used.

bufferFactory - for creating output stream DataBuffer's

elementType - the expected type of elements in the input stream; this type must have been previously passed to the Encoder.canEncode(org.springframework.core.ResolvableType, org.springframework.util.MimeType) method and it must have returned true.

mimeType - the MIME type for the output content (optional)

hints - additional information about how to encode

Returns:

the output stream

encodeValue

public DataBuffer encodeValue(Object value,
                              DataBufferFactory bufferFactory,
                              ResolvableType valueType,
                              @Nullable
                              MimeType mimeType,
                              @Nullable
                              Map<String,Object> hints)

Description copied from interface: Encoder

Encode an Object of type T to a data buffer. This is useful for scenarios, that distinct messages (or events) are encoded and handled individually, in fully aggregated form.

By default this method raises UnsupportedOperationException and it is expected that some encoders cannot produce a single buffer or cannot do so synchronously (e.g. encoding a Resource).

Parameters:

value - the value to be encoded

bufferFactory - for creating the output DataBuffer

valueType - the type for the value being encoded

mimeType - the MIME type for the output content (optional)

hints - additional information about how to encode

Returns:

the encoded content