com.fasterxml.jackson.databind.ser.Serializers Java Examples
The following examples show how to use
com.fasterxml.jackson.databind.ser.Serializers.
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Example #1
Source File: Jackson2ObjectMapperBuilderTests.java From spring-analysis-note with MIT License | 5 votes |
@Test public void modules() { NumberSerializer serializer1 = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer1); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().modules(module).build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #2
Source File: JacksonCodecs.java From immutables with Apache License 2.0 | 5 votes |
public static Serializers serializers(final CodecRegistry registry) { return new Serializers.Base() { @Override public JsonSerializer<?> findSerializer(SerializationConfig config, JavaType type, BeanDescription beanDesc) { try { Codec<?> codec = registry.get(type.getRawClass()); return serializer(codec); } catch (CodecConfigurationException e) { return null; } } }; }
Example #3
Source File: Jackson2ObjectMapperFactoryBeanTests.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Test public void setModules() { NumberSerializer serializer = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer); this.factory.setModules(Arrays.asList(new Module[]{module})); this.factory.afterPropertiesSet(); ObjectMapper objectMapper = this.factory.getObject(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #4
Source File: Jackson2ObjectMapperBuilderTests.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Test public void serializerByType() { JsonSerializer<Number> serializer = new NumberSerializer(Integer.class); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modules(new ArrayList<>()) // Disable well-known modules detection .serializerByType(Boolean.class, serializer).build(); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); }
Example #5
Source File: Jackson2ObjectMapperBuilderTests.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Test @SuppressWarnings("unchecked") public void modulesToInstallByClass() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().modulesToInstall(CustomIntegerModule.class).build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #6
Source File: Jackson2ObjectMapperBuilderTests.java From spring4-understanding with Apache License 2.0 | 5 votes |
@Test public void modules() { NumberSerializer serializer1 = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer1); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().modules(module).build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #7
Source File: OptionalHandlerFactory.java From lams with GNU General Public License v2.0 | 5 votes |
public JsonSerializer<?> findSerializer(SerializationConfig config, JavaType type, BeanDescription beanDesc) { final Class<?> rawType = type.getRawClass(); if (_jdk7Helper != null) { JsonSerializer<?> ser = _jdk7Helper.getSerializerForJavaNioFilePath(rawType); if (ser != null) { return ser; } } if ((CLASS_DOM_NODE != null) && CLASS_DOM_NODE.isAssignableFrom(rawType)) { return (JsonSerializer<?>) instantiate(SERIALIZER_FOR_DOM_NODE); } String className = rawType.getName(); String factoryName; if (className.startsWith(PACKAGE_PREFIX_JAVAX_XML) || hasSuperClassStartingWith(rawType, PACKAGE_PREFIX_JAVAX_XML)) { factoryName = SERIALIZERS_FOR_JAVAX_XML; } else { return null; } Object ob = instantiate(factoryName); if (ob == null) { // could warn, if we had logging system (j.u.l?) return null; } return ((Serializers) ob).findSerializer(config, type, beanDesc); }
Example #8
Source File: FilterObjectMapperBuilderTest.java From jfilter with Apache License 2.0 | 5 votes |
private boolean serializerExist(Iterable<Serializers> serializers, Class serializer) { while (serializers.iterator().hasNext()) { if (serializers.iterator().next().getClass().equals(serializer)) return true; } return false; }
Example #9
Source File: Jackson2ObjectMapperFactoryBeanTests.java From java-technology-stack with MIT License | 5 votes |
@Test public void setModules() { NumberSerializer serializer = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer); this.factory.setModules(Arrays.asList(new Module[]{module})); this.factory.afterPropertiesSet(); ObjectMapper objectMapper = this.factory.getObject(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #10
Source File: Jackson2ObjectMapperBuilderTests.java From java-technology-stack with MIT License | 5 votes |
@Test public void serializerByType() { JsonSerializer<Number> serializer = new NumberSerializer(Integer.class); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modules(new ArrayList<>()) // Disable well-known modules detection .serializerByType(Boolean.class, serializer) .build(); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); }
Example #11
Source File: Jackson2ObjectMapperBuilderTests.java From java-technology-stack with MIT License | 5 votes |
@Test public void modulesToInstallByInstance() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modulesToInstall(new CustomIntegerModule()) .build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #12
Source File: Jackson2ObjectMapperBuilderTests.java From java-technology-stack with MIT License | 5 votes |
@Test @SuppressWarnings("unchecked") public void modulesToInstallByClass() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modulesToInstall(CustomIntegerModule.class) .build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #13
Source File: Jackson2ObjectMapperBuilderTests.java From java-technology-stack with MIT License | 5 votes |
@Test public void modules() { NumberSerializer serializer1 = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer1); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().modules(module).build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #14
Source File: Jackson2ObjectMapperFactoryBeanTests.java From spring-analysis-note with MIT License | 5 votes |
@Test public void setModules() { NumberSerializer serializer = new NumberSerializer(Integer.class); SimpleModule module = new SimpleModule(); module.addSerializer(Integer.class, serializer); this.factory.setModules(Arrays.asList(new Module[]{module})); this.factory.afterPropertiesSet(); ObjectMapper objectMapper = this.factory.getObject(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Integer.class), null)); }
Example #15
Source File: Jackson2ObjectMapperBuilderTests.java From spring-analysis-note with MIT License | 5 votes |
@Test public void serializerByType() { JsonSerializer<Number> serializer = new NumberSerializer(Integer.class); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modules(new ArrayList<>()) // Disable well-known modules detection .serializerByType(Boolean.class, serializer) .build(); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); }
Example #16
Source File: Jackson2ObjectMapperBuilderTests.java From spring-analysis-note with MIT License | 5 votes |
@Test public void modulesToInstallByInstance() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modulesToInstall(new CustomIntegerModule()) .build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #17
Source File: Jackson2ObjectMapperBuilderTests.java From spring-analysis-note with MIT License | 5 votes |
@Test @SuppressWarnings("unchecked") public void modulesToInstallByClass() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json() .modulesToInstall(CustomIntegerModule.class) .build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #18
Source File: ObjectMapperFactoryV2.java From aws-athena-query-federation with Apache License 2.0 | 5 votes |
@Override @SuppressWarnings("unchecked") public JsonSerializer<Object> createSerializer(SerializerProvider prov, JavaType origType) throws JsonMappingException { for (Serializers serializers : customSerializers()) { JsonSerializer<?> ser = serializers.findSerializer(prov.getConfig(), origType, null); if (ser != null) { return (JsonSerializer<Object>) ser; } } throw new IllegalArgumentException("No explicitly configured serializer for " + origType); }
Example #19
Source File: Jackson2ObjectMapperFactoryBeanTests.java From java-technology-stack with MIT License | 4 votes |
@Test public void completeSetup() { NopAnnotationIntrospector annotationIntrospector = NopAnnotationIntrospector.instance; ObjectMapper objectMapper = new ObjectMapper(); this.factory.setObjectMapper(objectMapper); assertTrue(this.factory.isSingleton()); assertEquals(ObjectMapper.class, this.factory.getObjectType()); Map<Class<?>, JsonDeserializer<?>> deserializers = new HashMap<>(); deserializers.put(Date.class, new DateDeserializer()); JsonSerializer<Class<?>> serializer1 = new ClassSerializer(); JsonSerializer<Number> serializer2 = new NumberSerializer(Integer.class); // Disable well-known modules detection this.factory.setModules(new ArrayList<>()); this.factory.setSerializers(serializer1); this.factory.setSerializersByType(Collections.singletonMap(Boolean.class, serializer2)); this.factory.setDeserializersByType(deserializers); this.factory.setAnnotationIntrospector(annotationIntrospector); this.factory.setFeaturesToEnable(SerializationFeature.FAIL_ON_EMPTY_BEANS, DeserializationFeature.UNWRAP_ROOT_VALUE, JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER, JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS); this.factory.setFeaturesToDisable(MapperFeature.AUTO_DETECT_GETTERS, MapperFeature.AUTO_DETECT_FIELDS, JsonParser.Feature.AUTO_CLOSE_SOURCE, JsonGenerator.Feature.QUOTE_FIELD_NAMES); assertFalse(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertFalse(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); this.factory.setSerializationInclusion(Include.NON_NULL); this.factory.afterPropertiesSet(); assertSame(objectMapper, this.factory.getObject()); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertTrue(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Class.class), null)); assertSame(serializer2, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); assertNull(serializers.findSerializer(null, SimpleType.construct(Number.class), null)); assertSame(annotationIntrospector, objectMapper.getSerializationConfig().getAnnotationIntrospector()); assertSame(annotationIntrospector, objectMapper.getDeserializationConfig().getAnnotationIntrospector()); assertTrue(objectMapper.getSerializationConfig().isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)); assertTrue(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.UNWRAP_ROOT_VALUE)); assertTrue(objectMapper.getFactory().isEnabled(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER)); assertTrue(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS)); assertFalse(objectMapper.getSerializationConfig().isEnabled(MapperFeature.AUTO_DETECT_GETTERS)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.AUTO_DETECT_FIELDS)); assertFalse(objectMapper.getFactory().isEnabled(JsonParser.Feature.AUTO_CLOSE_SOURCE)); assertFalse(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.QUOTE_FIELD_NAMES)); assertSame(Include.NON_NULL, objectMapper.getSerializationConfig().getSerializationInclusion()); }
Example #20
Source File: Jackson2ObjectMapperFactoryBeanTests.java From spring-analysis-note with MIT License | 4 votes |
@Test public void completeSetup() { NopAnnotationIntrospector annotationIntrospector = NopAnnotationIntrospector.instance; ObjectMapper objectMapper = new ObjectMapper(); this.factory.setObjectMapper(objectMapper); assertTrue(this.factory.isSingleton()); assertEquals(ObjectMapper.class, this.factory.getObjectType()); Map<Class<?>, JsonDeserializer<?>> deserializers = new HashMap<>(); deserializers.put(Date.class, new DateDeserializer()); JsonSerializer<Class<?>> serializer1 = new ClassSerializer(); JsonSerializer<Number> serializer2 = new NumberSerializer(Integer.class); // Disable well-known modules detection this.factory.setModules(new ArrayList<>()); this.factory.setSerializers(serializer1); this.factory.setSerializersByType(Collections.singletonMap(Boolean.class, serializer2)); this.factory.setDeserializersByType(deserializers); this.factory.setAnnotationIntrospector(annotationIntrospector); this.factory.setFeaturesToEnable(SerializationFeature.FAIL_ON_EMPTY_BEANS, DeserializationFeature.UNWRAP_ROOT_VALUE, JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER, JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS); this.factory.setFeaturesToDisable(MapperFeature.AUTO_DETECT_GETTERS, MapperFeature.AUTO_DETECT_FIELDS, JsonParser.Feature.AUTO_CLOSE_SOURCE, JsonGenerator.Feature.QUOTE_FIELD_NAMES); assertFalse(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertFalse(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); this.factory.setSerializationInclusion(Include.NON_NULL); this.factory.afterPropertiesSet(); assertSame(objectMapper, this.factory.getObject()); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertTrue(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Class.class), null)); assertSame(serializer2, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); assertNull(serializers.findSerializer(null, SimpleType.construct(Number.class), null)); assertSame(annotationIntrospector, objectMapper.getSerializationConfig().getAnnotationIntrospector()); assertSame(annotationIntrospector, objectMapper.getDeserializationConfig().getAnnotationIntrospector()); assertTrue(objectMapper.getSerializationConfig().isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)); assertTrue(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.UNWRAP_ROOT_VALUE)); assertTrue(objectMapper.getFactory().isEnabled(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER)); assertTrue(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS)); assertFalse(objectMapper.getSerializationConfig().isEnabled(MapperFeature.AUTO_DETECT_GETTERS)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.AUTO_DETECT_FIELDS)); assertFalse(objectMapper.getFactory().isEnabled(JsonParser.Feature.AUTO_CLOSE_SOURCE)); assertFalse(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.QUOTE_FIELD_NAMES)); assertSame(Include.NON_NULL, objectMapper.getSerializationConfig().getSerializationInclusion()); }
Example #21
Source File: Jackson2ObjectMapperBuilderTests.java From spring4-understanding with Apache License 2.0 | 4 votes |
@Test public void modulesToInstallByInstance() { ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().modulesToInstall(new CustomIntegerModule()).build(); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(CustomIntegerSerializer.class, serializers.findSerializer(null, SimpleType.construct(Integer.class), null).getClass()); }
Example #22
Source File: Jackson2ObjectMapperFactoryBeanTests.java From spring4-understanding with Apache License 2.0 | 4 votes |
@Test public void completeSetup() { NopAnnotationIntrospector annotationIntrospector = NopAnnotationIntrospector.instance; ObjectMapper objectMapper = new ObjectMapper(); this.factory.setObjectMapper(objectMapper); assertTrue(this.factory.isSingleton()); assertEquals(ObjectMapper.class, this.factory.getObjectType()); Map<Class<?>, JsonDeserializer<?>> deserializers = new HashMap<Class<?>, JsonDeserializer<?>>(); deserializers.put(Date.class, new DateDeserializer()); JsonSerializer<Class<?>> serializer1 = new ClassSerializer(); JsonSerializer<Number> serializer2 = new NumberSerializer(Integer.class); // Disable well-known modules detection this.factory.setModules(new ArrayList<>()); this.factory.setSerializers(serializer1); this.factory.setSerializersByType(Collections.singletonMap(Boolean.class, serializer2)); this.factory.setDeserializersByType(deserializers); this.factory.setAnnotationIntrospector(annotationIntrospector); this.factory.setFeaturesToEnable(SerializationFeature.FAIL_ON_EMPTY_BEANS, DeserializationFeature.UNWRAP_ROOT_VALUE, JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER, JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS); this.factory.setFeaturesToDisable(MapperFeature.AUTO_DETECT_GETTERS, MapperFeature.AUTO_DETECT_FIELDS, JsonParser.Feature.AUTO_CLOSE_SOURCE, JsonGenerator.Feature.QUOTE_FIELD_NAMES); assertFalse(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertFalse(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); this.factory.setSerializationInclusion(Include.NON_NULL); this.factory.afterPropertiesSet(); assertSame(objectMapper, this.factory.getObject()); assertTrue(getSerializerFactoryConfig(objectMapper).hasSerializers()); assertTrue(getDeserializerFactoryConfig(objectMapper).hasDeserializers()); Serializers serializers = getSerializerFactoryConfig(objectMapper).serializers().iterator().next(); assertSame(serializer1, serializers.findSerializer(null, SimpleType.construct(Class.class), null)); assertSame(serializer2, serializers.findSerializer(null, SimpleType.construct(Boolean.class), null)); assertNull(serializers.findSerializer(null, SimpleType.construct(Number.class), null)); assertSame(annotationIntrospector, objectMapper.getSerializationConfig().getAnnotationIntrospector()); assertSame(annotationIntrospector, objectMapper.getDeserializationConfig().getAnnotationIntrospector()); assertTrue(objectMapper.getSerializationConfig().isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)); assertTrue(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.UNWRAP_ROOT_VALUE)); assertTrue(objectMapper.getFactory().isEnabled(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER)); assertTrue(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS)); assertFalse(objectMapper.getSerializationConfig().isEnabled(MapperFeature.AUTO_DETECT_GETTERS)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)); assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.AUTO_DETECT_FIELDS)); assertFalse(objectMapper.getFactory().isEnabled(JsonParser.Feature.AUTO_CLOSE_SOURCE)); assertFalse(objectMapper.getFactory().isEnabled(JsonGenerator.Feature.QUOTE_FIELD_NAMES)); assertSame(Include.NON_NULL, objectMapper.getSerializationConfig().getSerializationInclusion()); }
Example #23
Source File: Module.java From lams with GNU General Public License v2.0 | 2 votes |
/** * Method that module can use to register additional serializers to use for * handling types. * * @param s Object that can be called to find serializer for types supported * by module (null returned for non-supported types) */ public void addSerializers(Serializers s);
Example #24
Source File: Module.java From lams with GNU General Public License v2.0 | 2 votes |
/** * Method that module can use to register additional serializers to use for * handling Map key values (which are separate from value serializers because * they must write <code>JsonToken.FIELD_NAME</code> instead of String value). */ public void addKeySerializers(Serializers s);