public class Jackson2JsonRedisSerializer<T> extends Object implements RedisSerializer<T>
RedisSerializer
that can read and write JSON using
Jackson's and
Jackson Databind ObjectMapper
.
This converter can be used to bind to typed beans, or untyped HashMap
instances.
Note:Null objects are serialized as empty arrays and vice versa.
Modifier and Type | Field and Description |
---|---|
static Charset |
DEFAULT_CHARSET |
Constructor and Description |
---|
Jackson2JsonRedisSerializer(Class<T> type)
Creates a new
Jackson2JsonRedisSerializer for the given target Class . |
Jackson2JsonRedisSerializer(com.fasterxml.jackson.databind.JavaType javaType)
Creates a new
Jackson2JsonRedisSerializer for the given target JavaType . |
Modifier and Type | Method and Description |
---|---|
T |
deserialize(byte[] bytes)
Deserialize an object from the given binary data.
|
protected com.fasterxml.jackson.databind.JavaType |
getJavaType(Class<?> clazz)
Returns the Jackson
JavaType for the specific class. |
byte[] |
serialize(Object t)
Serialize the given object to binary data.
|
void |
setObjectMapper(com.fasterxml.jackson.databind.ObjectMapper objectMapper)
Sets the
ObjectMapper for this view. |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
byteArray, canSerialize, getTargetType, java, java, json, string
public static final Charset DEFAULT_CHARSET
public Jackson2JsonRedisSerializer(Class<T> type)
Jackson2JsonRedisSerializer
for the given target Class
.type
- public Jackson2JsonRedisSerializer(com.fasterxml.jackson.databind.JavaType javaType)
Jackson2JsonRedisSerializer
for the given target JavaType
.javaType
- public T deserialize(@Nullable byte[] bytes) throws SerializationException
RedisSerializer
deserialize
in interface RedisSerializer<T>
bytes
- object binary representation. Can be null.SerializationException
public byte[] serialize(@Nullable Object t) throws SerializationException
RedisSerializer
serialize
in interface RedisSerializer<T>
t
- object to serialize. Can be null.SerializationException
public void setObjectMapper(com.fasterxml.jackson.databind.ObjectMapper objectMapper)
ObjectMapper
for this view. If not set, a default ObjectMapper
is used.
Setting a custom-configured ObjectMapper
is one way to take further control of the JSON serialization
process. For example, an extended SerializerFactory
can be configured that provides custom serializers for
specific types. The other option for refining the serialization process is to use Jackson's provided annotations on
the types to be serialized, in which case a custom-configured ObjectMapper is unnecessary.
protected com.fasterxml.jackson.databind.JavaType getJavaType(Class<?> clazz)
JavaType
for the specific class.
Default implementation returns TypeFactory.constructType(java.lang.reflect.Type)
, but this can be
overridden in subclasses, to allow for custom generic collection handling. For instance:
protected JavaType getJavaType(Class<?> clazz) { if (List.class.isAssignableFrom(clazz)) { return TypeFactory.defaultInstance().constructCollectionType(ArrayList.class, MyBean.class); } else { return super.getJavaType(clazz); } }
clazz
- the class to return the java type forCopyright © 2011–2021 Pivotal Software, Inc.. All rights reserved.