org.frameworkset.http.converter.json.Jackson2ObjectMapperBuilder Maven / Gradle / Ivy
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package org.frameworkset.http.converter.json;
import com.fasterxml.jackson.annotation.JsonFilter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.cfg.HandlerInstantiator;
import com.fasterxml.jackson.databind.jsontype.TypeResolverBuilder;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.frameworkset.util.BeanUtils;
import com.frameworkset.util.StringUtil;
import org.frameworkset.json.Jackson2ObjectMapper;
import org.frameworkset.spi.ApplicationContext;
import org.frameworkset.spi.BaseApplicationContext;
import org.frameworkset.util.Assert;
import org.frameworkset.util.StreamUtils;
import org.frameworkset.util.beans.FatalBeanException;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLResolver;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
public class Jackson2ObjectMapperBuilder {
private boolean createXmlMapper = false;
private DateFormat dateFormat;
private Locale locale;
private TimeZone timeZone;
private boolean disableTimestamp = false;
private AnnotationIntrospector annotationIntrospector;
private PropertyNamingStrategy propertyNamingStrategy;
private TypeResolverBuilder defaultTyping;
private JsonInclude.Include serializationInclusion;
private FilterProvider filters;
private final Map, Class> mixIns = new HashMap, Class>();
private final Map, JsonSerializer> serializers = new LinkedHashMap, JsonSerializer>();
private final Map, JsonDeserializer> deserializers = new LinkedHashMap, JsonDeserializer>();
private final Map features = new HashMap();
private List modules;
private Class[] moduleClasses;
private boolean findModulesViaServiceLoader = false;
private boolean findWellKnownModules = true;
private ClassLoader moduleClassLoader = getClass().getClassLoader();
private HandlerInstantiator handlerInstantiator;
private BaseApplicationContext applicationContext;
/**
* If set to {@code true}, an {@link XmlMapper} will be created using its
* default constructor. This is only applicable to {@link #build()} calls,
* not to {@link #configure} calls.
*/
public Jackson2ObjectMapperBuilder createXmlMapper(boolean createXmlMapper) {
this.createXmlMapper = createXmlMapper;
return this;
}
/**
* Define the format for date/time with the given {@link DateFormat}.
* Note: Setting this property makes the exposed {@link ObjectMapper}
* non-thread-safe, according to Jackson's thread safety rules.
* @see #simpleDateFormat(String)
*/
public Jackson2ObjectMapperBuilder dateFormat(DateFormat dateFormat) {
this.dateFormat = dateFormat;
return this;
}
/**
* Define the date/time format with a {@link SimpleDateFormat}.
*
Note: Setting this property makes the exposed {@link ObjectMapper}
* non-thread-safe, according to Jackson's thread safety rules.
* @see #dateFormat(DateFormat)
*/
public Jackson2ObjectMapperBuilder simpleDateFormat(String format) {
this.dateFormat = new SimpleDateFormat(format);
return this;
}
/**
* Override the default {@link Locale} to use for formatting.
* Default value used is {@link Locale#getDefault()}.
* @since 4.1.5
*/
public Jackson2ObjectMapperBuilder locale(Locale locale) {
this.locale = locale;
return this;
}
/**
* Override the default {@link Locale} to use for formatting.
* Default value used is {@link Locale#getDefault()}.
* @param localeString the locale ID as a String representation
* @since 4.1.5
*/
public Jackson2ObjectMapperBuilder locale(String localeString) {
this.locale = StringUtil.parseLocaleString(localeString);
return this;
}
/**
* Override the default {@link TimeZone} to use for formatting.
* Default value used is UTC (NOT local timezone).
* @since 4.1.5
*/
public Jackson2ObjectMapperBuilder timeZone(TimeZone timeZone) {
this.timeZone = timeZone;
return this;
}
/**
* Override the default {@link TimeZone} to use for formatting.
* Default value used is UTC (NOT local timezone).
* @param timeZoneString the zone ID as a String representation
* @since 4.1.5
*/
public Jackson2ObjectMapperBuilder timeZone(String timeZoneString) {
this.timeZone = StringUtil.parseTimeZoneString(timeZoneString);
return this;
}
/**
* Set an {@link AnnotationIntrospector} for both serialization and deserialization.
*/
public Jackson2ObjectMapperBuilder annotationIntrospector(AnnotationIntrospector annotationIntrospector) {
this.annotationIntrospector = annotationIntrospector;
return this;
}
/**
* Specify a {@link com.fasterxml.jackson.databind.PropertyNamingStrategy} to
* configure the {@link ObjectMapper} with.
*/
public Jackson2ObjectMapperBuilder propertyNamingStrategy(PropertyNamingStrategy propertyNamingStrategy) {
this.propertyNamingStrategy = propertyNamingStrategy;
return this;
}
/**
* Specify a {@link TypeResolverBuilder} to use for Jackson's default typing.
* @since 4.2.2
*/
public Jackson2ObjectMapperBuilder defaultTyping(TypeResolverBuilder typeResolverBuilder) {
this.defaultTyping = typeResolverBuilder;
return this;
}
/**
* Set a custom inclusion strategy for serialization.
* @see com.fasterxml.jackson.annotation.JsonInclude.Include
*/
public Jackson2ObjectMapperBuilder serializationInclusion(JsonInclude.Include serializationInclusion) {
this.serializationInclusion = serializationInclusion;
return this;
}
/**
* Set the global filters to use in order to support {@link JsonFilter @JsonFilter} annotated POJO.
* @since 4.2
* @see MappingJacksonValue#setFilters(FilterProvider)
*/
public Jackson2ObjectMapperBuilder filters(FilterProvider filters) {
this.filters = filters;
return this;
}
/**
* Add mix-in annotations to use for augmenting specified class or interface.
* @param target class (or interface) whose annotations to effectively override
* @param mixinSource class (or interface) whose annotations are to be "added"
* to target's annotations as value
* @since 4.1.2
* @see com.fasterxml.jackson.databind.ObjectMapper#addMixInAnnotations(Class, Class)
*/
public Jackson2ObjectMapperBuilder mixIn(Class target, Class mixinSource) {
if (mixinSource != null) {
this.mixIns.put(target, mixinSource);
}
return this;
}
/**
* Add mix-in annotations to use for augmenting specified class or interface.
* @param mixIns Map of entries with target classes (or interface) whose annotations
* to effectively override as key and mix-in classes (or interface) whose
* annotations are to be "added" to target's annotations as value.
* @since 4.1.2
* @see com.fasterxml.jackson.databind.ObjectMapper#addMixInAnnotations(Class, Class)
*/
public Jackson2ObjectMapperBuilder mixIns(Map, Class> mixIns) {
if (mixIns != null) {
this.mixIns.putAll(mixIns);
}
return this;
}
/**
* Configure custom serializers. Each serializer is registered for the type
* returned by {@link JsonSerializer#handledType()}, which must not be
* {@code null}.
* @see #serializersByType(Map)
*/
public Jackson2ObjectMapperBuilder serializers(JsonSerializer... serializers) {
if (serializers != null) {
for (JsonSerializer serializer : serializers) {
Class handledType = serializer.handledType();
if (handledType == null || handledType == Object.class) {
throw new IllegalArgumentException("Unknown handled type in " + serializer.getClass().getName());
}
this.serializers.put(serializer.handledType(), serializer);
}
}
return this;
}
/**
* Configure a custom serializer for the given type.
* @see #serializers(JsonSerializer...)
* @since 4.1.2
*/
public Jackson2ObjectMapperBuilder serializerByType(Class type, JsonSerializer serializer) {
if (serializer != null) {
this.serializers.put(type, serializer);
}
return this;
}
/**
* Configure custom serializers for the given types.
* @see #serializers(JsonSerializer...)
*/
public Jackson2ObjectMapperBuilder serializersByType(Map, JsonSerializer> serializers) {
if (serializers != null) {
this.serializers.putAll(serializers);
}
return this;
}
/**
* Configure a custom deserializer for the given type.
* @since 4.1.2
*/
public Jackson2ObjectMapperBuilder deserializerByType(Class type, JsonDeserializer deserializer) {
if (deserializer != null) {
this.deserializers.put(type, deserializer);
}
return this;
}
/**
* Configure custom deserializers for the given types.
*/
public Jackson2ObjectMapperBuilder deserializersByType(Map, JsonDeserializer> deserializers) {
if (deserializers != null) {
this.deserializers.putAll(deserializers);
}
return this;
}
/**
* Shortcut for {@link MapperFeature#AUTO_DETECT_FIELDS} option.
*/
public Jackson2ObjectMapperBuilder autoDetectFields(boolean autoDetectFields) {
this.features.put(MapperFeature.AUTO_DETECT_FIELDS, autoDetectFields);
return this;
}
/**
* Shortcut for {@link MapperFeature#AUTO_DETECT_SETTERS}/
* {@link MapperFeature#AUTO_DETECT_GETTERS}/{@link MapperFeature#AUTO_DETECT_IS_GETTERS}
* options.
*/
public Jackson2ObjectMapperBuilder autoDetectGettersSetters(boolean autoDetectGettersSetters) {
this.features.put(MapperFeature.AUTO_DETECT_GETTERS, autoDetectGettersSetters);
this.features.put(MapperFeature.AUTO_DETECT_SETTERS, autoDetectGettersSetters);
this.features.put(MapperFeature.AUTO_DETECT_IS_GETTERS, autoDetectGettersSetters);
return this;
}
/**
* Shortcut for {@link MapperFeature#DEFAULT_VIEW_INCLUSION} option.
*/
public Jackson2ObjectMapperBuilder defaultViewInclusion(boolean defaultViewInclusion) {
this.features.put(MapperFeature.DEFAULT_VIEW_INCLUSION, defaultViewInclusion);
return this;
}
/**
* Shortcut for {@link DeserializationFeature#FAIL_ON_UNKNOWN_PROPERTIES} option.
*/
public Jackson2ObjectMapperBuilder failOnUnknownProperties(boolean failOnUnknownProperties) {
this.features.put(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, failOnUnknownProperties);
return this;
}
/**
* Shortcut for {@link SerializationFeature#FAIL_ON_EMPTY_BEANS} option.
*/
public Jackson2ObjectMapperBuilder failOnEmptyBeans(boolean failOnEmptyBeans) {
this.features.put(SerializationFeature.FAIL_ON_EMPTY_BEANS, failOnEmptyBeans);
return this;
}
/**
* Shortcut for {@link SerializationFeature#INDENT_OUTPUT} option.
*/
public Jackson2ObjectMapperBuilder indentOutput(boolean indentOutput) {
this.features.put(SerializationFeature.INDENT_OUTPUT, indentOutput);
return this;
}
/**
* Specify features to enable.
* @see com.fasterxml.jackson.core.JsonParser.Feature
* @see com.fasterxml.jackson.core.JsonGenerator.Feature
* @see com.fasterxml.jackson.databind.SerializationFeature
* @see com.fasterxml.jackson.databind.DeserializationFeature
* @see com.fasterxml.jackson.databind.MapperFeature
*/
public Jackson2ObjectMapperBuilder featuresToEnable(Object... featuresToEnable) {
if (featuresToEnable != null) {
for (Object feature : featuresToEnable) {
this.features.put(feature, Boolean.TRUE);
}
}
return this;
}
/**
* Specify features to disable.
* @see com.fasterxml.jackson.core.JsonParser.Feature
* @see com.fasterxml.jackson.core.JsonGenerator.Feature
* @see com.fasterxml.jackson.databind.SerializationFeature
* @see com.fasterxml.jackson.databind.DeserializationFeature
* @see com.fasterxml.jackson.databind.MapperFeature
*/
public Jackson2ObjectMapperBuilder featuresToDisable(Object... featuresToDisable) {
if (featuresToDisable != null) {
for (Object feature : featuresToDisable) {
this.features.put(feature, Boolean.FALSE);
}
}
return this;
}
/**
* Specify one or more modules to be registered with the {@link ObjectMapper}.
* Note: If this is set, no finding of modules is going to happen - not by
* Jackson, and not by Spring either (see {@link #findModulesViaServiceLoader}).
* As a consequence, specifying an empty list here will suppress any kind of
* module detection.
*
Specify either this or {@link #modulesToInstall}, not both.
* @since 4.1.5
* @see #modules(List)
* @see com.fasterxml.jackson.databind.Module
*/
public Jackson2ObjectMapperBuilder modules(Module... modules) {
return modules(Arrays.asList(modules));
}
/**
* Set a complete list of modules to be registered with the {@link ObjectMapper}.
*
Note: If this is set, no finding of modules is going to happen - not by
* Jackson, and not by Spring either (see {@link #findModulesViaServiceLoader}).
* As a consequence, specifying an empty list here will suppress any kind of
* module detection.
*
Specify either this or {@link #modulesToInstall}, not both.
* @see #modules(Module...)
* @see com.fasterxml.jackson.databind.Module
*/
public Jackson2ObjectMapperBuilder modules(List modules) {
this.modules = new LinkedList(modules);
this.findModulesViaServiceLoader = false;
this.findWellKnownModules = false;
return this;
}
/**
* Specify one or more modules to be registered with the {@link ObjectMapper}.
* Modules specified here will be registered after
* Spring's autodetection of JSR-310 and Joda-Time, or Jackson's
* finding of modules (see {@link #findModulesViaServiceLoader}),
* allowing to eventually override their configuration.
*
Specify either this or {@link #modules}, not both.
* @since 4.1.5
* @see com.fasterxml.jackson.databind.Module
*/
public Jackson2ObjectMapperBuilder modulesToInstall(Module... modules) {
this.modules = Arrays.asList(modules);
this.findWellKnownModules = true;
return this;
}
/**
* Specify one or more modules by class to be registered with
* the {@link ObjectMapper}.
*
Modules specified here will be registered after
* Spring's autodetection of JSR-310 and Joda-Time, or Jackson's
* finding of modules (see {@link #findModulesViaServiceLoader}),
* allowing to eventually override their configuration.
*
Specify either this or {@link #modules}, not both.
* @see #modulesToInstall(Module...)
* @see com.fasterxml.jackson.databind.Module
*/
@SuppressWarnings("unchecked")
public Jackson2ObjectMapperBuilder modulesToInstall(Class... modules) {
this.moduleClasses = modules;
this.findWellKnownModules = true;
return this;
}
/**
* Set whether to let Jackson find available modules via the JDK ServiceLoader,
* based on META-INF metadata in the classpath. Requires Jackson 2.2 or higher.
*
If this mode is not set, Spring's Jackson2ObjectMapperBuilder itself
* will try to find the JSR-310 and Joda-Time support modules on the classpath -
* provided that Java 8 and Joda-Time themselves are available, respectively.
* @see com.fasterxml.jackson.databind.ObjectMapper#findModules()
*/
public Jackson2ObjectMapperBuilder findModulesViaServiceLoader(boolean findModules) {
this.findModulesViaServiceLoader = findModules;
return this;
}
/**
* Set the ClassLoader to use for loading Jackson extension modules.
*/
public Jackson2ObjectMapperBuilder moduleClassLoader(ClassLoader moduleClassLoader) {
this.moduleClassLoader = moduleClassLoader;
return this;
}
/**
* Customize the construction of Jackson handlers ({@link JsonSerializer}, {@link JsonDeserializer},
* {@link KeyDeserializer}, {@code TypeResolverBuilder} and {@code TypeIdResolver}).
* @since 4.1.3
*/
public Jackson2ObjectMapperBuilder handlerInstantiator(HandlerInstantiator handlerInstantiator) {
this.handlerInstantiator = handlerInstantiator;
return this;
}
/**
* Set the Spring {@link ApplicationContext} in order to autowire Jackson handlers ({@link JsonSerializer},
* {@link JsonDeserializer}, {@link KeyDeserializer}, {@code TypeResolverBuilder} and {@code TypeIdResolver}).
* @since 4.1.3
*/
public Jackson2ObjectMapperBuilder applicationContext(BaseApplicationContext applicationContext) {
this.applicationContext = applicationContext;
return this;
}
/**
* Build a new {@link ObjectMapper} instance.
*
Each build operation produces an independent {@link ObjectMapper} instance.
* The builder's settings can get modified, with a subsequent build operation
* then producing a new {@link ObjectMapper} based on the most recent settings.
* @return the newly built ObjectMapper
*/
@SuppressWarnings("unchecked")
public T build() {
ObjectMapper mapper;
if (this.createXmlMapper) {
mapper = new XmlObjectMapperInitializer().create();
}
else {
mapper = new ObjectMapper();
}
configure(mapper);
return (T) mapper;
}
/**
* Configure an existing {@link ObjectMapper} instance with this builder's
* settings. This can be applied to any number of {@code ObjectMappers}.
* @param objectMapper the ObjectMapper to configure
*/
@SuppressWarnings("deprecation")
public void configure(ObjectMapper objectMapper) {
Assert.notNull(objectMapper, "ObjectMapper must not be null");
if (this.findModulesViaServiceLoader) {
// Jackson 2.2+
objectMapper.registerModules(ObjectMapper.findModules(this.moduleClassLoader));
}
else if (this.findWellKnownModules) {
Jackson2ObjectMapper.registerWellKnownModulesIfAvailable(objectMapper);
}
if (this.modules != null) {
for (Module module : this.modules) {
// Using Jackson 2.0+ registerModule method, not Jackson 2.2+ registerModules
objectMapper.registerModule(module);
}
}
if (this.moduleClasses != null) {
for (Class module : this.moduleClasses) {
objectMapper.registerModule(BeanUtils.instantiate(module));
}
}
if (this.dateFormat != null) {
objectMapper.setDateFormat(this.dateFormat);
}
if (this.locale != null) {
objectMapper.setLocale(this.locale);
}
if (this.timeZone != null) {
objectMapper.setTimeZone(this.timeZone);
}
if (this.annotationIntrospector != null) {
objectMapper.setAnnotationIntrospector(this.annotationIntrospector);
}
if (this.propertyNamingStrategy != null) {
objectMapper.setPropertyNamingStrategy(this.propertyNamingStrategy);
}
if (this.defaultTyping != null) {
objectMapper.setDefaultTyping(this.defaultTyping);
}
if (this.serializationInclusion != null) {
objectMapper.setSerializationInclusion(this.serializationInclusion);
}
if (this.filters != null) {
// Deprecated as of Jackson 2.6, but just in favor of a fluent variant.
objectMapper.setFilters(this.filters);
}
for (Class target : this.mixIns.keySet()) {
// Deprecated as of Jackson 2.5, but just in favor of a fluent variant.
objectMapper.addMixInAnnotations(target, this.mixIns.get(target));
}
if (!this.serializers.isEmpty() || !this.deserializers.isEmpty()) {
SimpleModule module = new SimpleModule();
addSerializers(module);
addDeserializers(module);
objectMapper.registerModule(module);
}
customizeDefaultFeatures(objectMapper);
for (Object feature : this.features.keySet()) {
configureFeature(objectMapper, feature, this.features.get(feature));
}
if (this.handlerInstantiator != null) {
objectMapper.setHandlerInstantiator(this.handlerInstantiator);
}
else if (this.applicationContext != null) {
objectMapper.setHandlerInstantiator(
new BBossHandlerInstantiator(this.applicationContext));
}
}
// Any change to this method should be also applied to spring-jms and spring-messaging
// MappingJackson2MessageConverter default constructors
private void customizeDefaultFeatures(ObjectMapper objectMapper) {
if (!this.features.containsKey(MapperFeature.DEFAULT_VIEW_INCLUSION)) {
configureFeature(objectMapper, MapperFeature.DEFAULT_VIEW_INCLUSION, false);
}
if (!this.features.containsKey(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)) {
configureFeature(objectMapper, DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
}
}
@SuppressWarnings("unchecked")
private void addSerializers(SimpleModule module) {
for (Class type : this.serializers.keySet()) {
module.addSerializer((Class) type, (JsonSerializer) this.serializers.get(type));
}
}
@SuppressWarnings("unchecked")
private void addDeserializers(SimpleModule module) {
for (Class type : this.deserializers.keySet()) {
module.addDeserializer((Class) type, (JsonDeserializer) this.deserializers.get(type));
}
}
private void configureFeature(ObjectMapper objectMapper, Object feature, boolean enabled) {
if (feature instanceof JsonParser.Feature) {
objectMapper.configure((JsonParser.Feature) feature, enabled);
}
else if (feature instanceof JsonGenerator.Feature) {
objectMapper.configure((JsonGenerator.Feature) feature, enabled);
}
else if (feature instanceof SerializationFeature) {
objectMapper.configure((SerializationFeature) feature, enabled);
}
else if (feature instanceof DeserializationFeature) {
objectMapper.configure((DeserializationFeature) feature, enabled);
}
else if (feature instanceof MapperFeature) {
objectMapper.configure((MapperFeature) feature, enabled);
}
else {
throw new FatalBeanException("Unknown feature class: " + feature.getClass().getName());
}
}
//
// @SuppressWarnings("unchecked")
// private void registerWellKnownModulesIfAvailable(ObjectMapper objectMapper) {
// // Java 7 java.nio.file.Path class present?
// if (ClassUtils.isPresent("java.nio.file.Path", this.moduleClassLoader)) {
// try {
// Class jdk7Module = (Class)
// ClassUtils.forName("com.fasterxml.jackson.datatype.jdk7.Jdk7Module", this.moduleClassLoader);
// objectMapper.registerModule(BeanUtils.instantiate(jdk7Module));
// }
// catch (ClassNotFoundException ex) {
// // jackson-datatype-jdk7 not available
// }
// }
//
// // Java 8 java.util.Optional class present?
// if (ClassUtils.isPresent("java.util.Optional", this.moduleClassLoader)) {
// try {
// Class jdk8Module = (Class)
// ClassUtils.forName("com.fasterxml.jackson.datatype.jdk8.Jdk8Module", this.moduleClassLoader);
// objectMapper.registerModule(BeanUtils.instantiate(jdk8Module));
// }
// catch (ClassNotFoundException ex) {
// // jackson-datatype-jdk8 not available
// }
// }
//
// // Java 8 java.time package present?
// if (ClassUtils.isPresent("java.time.LocalDate", this.moduleClassLoader)) {
// try {
//// Class javaTimeModule = (Class)
//// ClassUtils.forName("com.fasterxml.jackson.datatype.jsr310.JavaTimeModule", this.moduleClassLoader);
//// objectMapper.registerModule(BeanUtils.instantiate(javaTimeModule));
//
// JavaTimeModule javaTimeModule = new JavaTimeModule();
// LocalDateTimeDeserializer localDateTimeDeserializer = new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSSSSSSS'Z'"));
// LocalDateTimeSerializer localDateTimeSerializer = new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSSSSSSS'Z'"));
//
// javaTimeModule.addSerializer(LocalDateTime.class,localDateTimeSerializer);
// javaTimeModule.addDeserializer(LocalDateTime.class,localDateTimeDeserializer);
//
//
// objectMapper.registerModule(javaTimeModule);
// }
// catch (Exception ex) {
// // jackson-datatype-jsr310 not available or older than 2.6
// try {
// Class jsr310Module = (Class)
// ClassUtils.forName("com.fasterxml.jackson.datatype.jsr310.JSR310Module", this.moduleClassLoader);
// objectMapper.registerModule(BeanUtils.instantiate(jsr310Module));
// }
// catch (ClassNotFoundException ex2) {
// // OK, jackson-datatype-jsr310 not available at all...
// }
// }
// }
//
// // Joda-Time present?
// if (ClassUtils.isPresent("org.joda.time.LocalDate", this.moduleClassLoader)) {
// try {
// Class jodaModule = (Class)
// ClassUtils.forName("com.fasterxml.jackson.datatype.joda.JodaModule", this.moduleClassLoader);
// objectMapper.registerModule(BeanUtils.instantiate(jodaModule));
// }
// catch (ClassNotFoundException ex) {
// // jackson-datatype-joda not available
// }
// }
// }
// Convenience factory methods
/**
* Obtain a {@link Jackson2ObjectMapperBuilder} instance in order to
* build a regular JSON {@link ObjectMapper} instance.
*/
public static Jackson2ObjectMapperBuilder json() {
return new Jackson2ObjectMapperBuilder();
}
/**
* Obtain a {@link Jackson2ObjectMapperBuilder} instance in order to
* build an {@link XmlMapper} instance.
*/
public static Jackson2ObjectMapperBuilder xml() {
return new Jackson2ObjectMapperBuilder().createXmlMapper(true);
}
private static class XmlObjectMapperInitializer {
public ObjectMapper create() {
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
inputFactory.setProperty(XMLInputFactory.SUPPORT_DTD, false);
inputFactory.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, false);
inputFactory.setXMLResolver(NO_OP_XML_RESOLVER);
return new XmlMapper(inputFactory);
}
private static final XMLResolver NO_OP_XML_RESOLVER = new XMLResolver() {
@Override
public Object resolveEntity(String publicID, String systemID, String base, String ns) {
return StreamUtils.emptyInput();
}
};
}
}