import io.dropwizard.jackson.GuavaExtrasModule; //导入依赖的package包/类
public SiloTemplateResolver(Class<T> classType) {
    ObjectMapper m = new ObjectMapper();
    m.registerModule(new GuavaModule());
    m.registerModule(new LogbackModule());
    m.registerModule(new GuavaExtrasModule());
    m.registerModule(new JodaModule());
    m.registerModule(new JSR310Module());
    m.registerModule(new AfterburnerModule());
    m.registerModule(new FuzzyEnumModule());
    m.setPropertyNamingStrategy(new AnnotationSensitivePropertyNamingStrategy());
    m.setSubtypeResolver(new DiscoverableSubtypeResolver());

    //Setup object mapper to ignore the null properties when serializing the objects
    m.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    //Lets be nice and allow additional properties by default.  Allows for more flexible forward/backward 
    //compatibility and works well with jackson addtional properties feature for serialization
    m.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);

    this.classType = classType;
    this.mapper = m;
}
 

import io.dropwizard.jackson.GuavaExtrasModule; //导入依赖的package包/类
/**
 * Creates a new {@link com.fasterxml.jackson.dataformat.xml.XmlMapper} using Woodstox
 * with Logback and Joda Time support.
 * Also includes all {@link io.dropwizard.jackson.Discoverable} interface implementations.
 *
 * @return XmlMapper
 */
public static XmlMapper newXMLMapper(JacksonXmlModule jacksonXmlModule) {

    final XmlFactory woodstoxFactory = new XmlFactory(new WstxInputFactory(), new WstxOutputFactory());
    final XmlMapper mapper = new XmlMapper(woodstoxFactory, jacksonXmlModule);

    mapper.registerModule(new GuavaModule());
    mapper.registerModule(new LogbackModule());
    mapper.registerModule(new GuavaExtrasModule());
    mapper.registerModule(new JodaModule());
    mapper.registerModule(new FuzzyEnumModule());
    mapper.setPropertyNamingStrategy(new AnnotationSensitivePropertyNamingStrategy());
    mapper.setSubtypeResolver(new DiscoverableSubtypeResolver());

    return mapper;
}
 

import io.dropwizard.jackson.GuavaExtrasModule; //导入依赖的package包/类
public static ObjectMapper build(JsonFactory jsonFactory) {
    ObjectMapper mapper = new ObjectMapper(jsonFactory);

    mapper.registerModule(new GuavaModule());
    mapper.registerModule(new LogbackModule());
    mapper.registerModule(new GuavaExtrasModule());
    mapper.registerModule(new JodaModule());
    mapper.registerModule(new AfterburnerModule());
    mapper.registerModule(new FuzzyEnumModule());
    mapper.setPropertyNamingStrategy(new AnnotationSensitivePropertyNamingStrategy());
    mapper.setSubtypeResolver(new DiscoverableSubtypeResolver());

    return mapper;
}
 

import io.dropwizard.jackson.GuavaExtrasModule; //导入依赖的package包/类
/**
 * Customized ObjectMapper for common settings.
 *
 * @return customized object mapper
 */
private static ObjectMapper customizeObjectMapper() {
  ObjectMapper mapper = new ObjectMapper();
  mapper.registerModule(new Jdk8Module());
  mapper.registerModule(new GuavaModule());
  mapper.registerModule(new LogbackModule());
  mapper.registerModule(new GuavaExtrasModule());
  mapper.registerModule(new FuzzyEnumModule());
  mapper.setPropertyNamingStrategy(new AnnotationSensitivePropertyNamingStrategy());
  mapper.setSubtypeResolver(new DiscoverableSubtypeResolver());
  mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
  return mapper;
}