Class ToStringSerializer<T>

java.lang.Object

org.springframework.kafka.support.serializer.ToStringSerializer<T>

Type Parameters:

T - class of the entity, representing messages

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.kafka.common.serialization.Serializer<T>

public class ToStringSerializer<T>
extends Object
implements org.apache.kafka.common.serialization.Serializer<T>

Generic Serializer that relies on Object.toString() to get serialized representation of the entity.

Since:

2.5

Author:

Alexei Klenin, Gary Russell

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ADD_TYPE_INFO_HEADERS	Kafka config property for enabling/disabling adding type headers.
static final String	KEY_TYPE	Header for the type of key.
static final String	VALUE_TYPE	Header for the type of value.

Constructor Summary

Constructors

Constructor	Description
ToStringSerializer()

Method Summary

Modifier and Type	Method	Description
void	close()
void	configure(Map<String,?> configs, boolean isKey)
Charset	getCharset()	Get the configured charset.
boolean	isAddTypeInfo()	Get the addTypeInfo property.
byte[]	serialize(String topic, org.apache.kafka.common.header.Headers headers, T data)
byte[]	serialize(String topic, T data)
void	setAddTypeInfo(boolean addTypeInfo)	Set to false to disable adding type info headers.
void	setCharset(Charset charset)	Set a charset to use when converting String to byte[].

Methods inherited from class java.lang.Object

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

Field Details

ADD_TYPE_INFO_HEADERS

public static final String ADD_TYPE_INFO_HEADERS

Kafka config property for enabling/disabling adding type headers.

See Also:

• Constant Field Values

KEY_TYPE

public static final String KEY_TYPE

Header for the type of key.

See Also:

• Constant Field Values

VALUE_TYPE

public static final String VALUE_TYPE

Header for the type of value.

See Also:

• Constant Field Values

Constructor Details

ToStringSerializer

public ToStringSerializer()

Method Details

configure

public void configure(Map<String,?> configs,
 boolean isKey)

Specified by:

configure in interface org.apache.kafka.common.serialization.Serializer<T>

serialize

public byte[] serialize(String topic,
 @Nullable
 T data)

Specified by:

serialize in interface org.apache.kafka.common.serialization.Serializer<T>

serialize

@Nullable
public byte[] serialize(String topic,
 @Nullable
 org.apache.kafka.common.header.Headers headers,
 @Nullable
 T data)

Specified by:

serialize in interface org.apache.kafka.common.serialization.Serializer<T>

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface org.apache.kafka.common.serialization.Serializer<T>

isAddTypeInfo

public boolean isAddTypeInfo()

Get the addTypeInfo property.

Returns:

the addTypeInfo

setAddTypeInfo

public void setAddTypeInfo(boolean addTypeInfo)

Set to false to disable adding type info headers.

Parameters:

addTypeInfo - true to add headers

setCharset

public void setCharset(Charset charset)

Set a charset to use when converting String to byte[]. Default UTF-8.

Parameters:

charset - the charset.

getCharset

public Charset getCharset()

Get the configured charset.

Returns:

the charset.