JsonDeserializer中的自动装配：SpringBeanAutowiringSupport与HandlerInstantiator

添加到Amir Jamak的答案中，你不必创建自定义HandlerInstantiator，因为Spring已经有了它，即SpringHandlerInstantiator。

你需要做的是将其连接到Spring配置中的Jackson2ObjectMapperBuilder。

@Beanpublic HandlerInstantiator handlerInstantiator(ApplicationContext applicationContext) {    return new SpringHandlerInstantiator(applicationContext.getAutowireCapableBeanFactory());}@Beanpublic Jackson2ObjectMapperBuilder objectMapperBuilder(HandlerInstantiator handlerInstantiator) {    Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();    builder.handlerInstantiator(handlerInstantiator);    return builder;}