What is an HTTP message converter in spring rest?

Advertisements. HttpMessageConverter is a strategy interface that specifies a converter that can convert from and to HTTP requests and responses in Spring REST Restful web services. Internally Spring MVC uses it to convert the Http request to an object representation and back.

What is the use of MappingJackson2HttpMessageConverter?

Class MappingJackson2HttpMessageConverter. Implementation of HttpMessageConverter that can read and write JSON using Jackson 2. x’s ObjectMapper . This converter can be used to bind to typed beans, or untyped HashMap instances.

What is the use of WebMvcConfigurer?

Interface WebMvcConfigurer. Defines callback methods to customize the Java-based configuration for Spring MVC enabled via @EnableWebMvc . @EnableWebMvc -annotated configuration classes may implement this interface to be called back and given a chance to customize the default configuration.

What is a Jackson Message Converter?

Message converter that uses Jackson 2. x to convert messages to and from JSON. Maps an object to a BytesMessage , or to a TextMessage if the targetType is set to MessageType. TEXT .

What is @ResponseStatus?

Overview. @ResponseStatus marks a method or exception class with the status code and reason message that should be returned. The status code is applied to the HTTP response when the handler method is invoked, or whenever the specified exception is thrown. @ResponseStatus(value = HttpStatus.

Can I have multiple WebMvcConfigurer?

There can however be multiple @Configuration classes implementing WebMvcConfigurer in order to customize the provided configuration.

What is Webmvc?

17.1 Introduction to Spring Web MVC framework. The Spring Web model-view-controller (MVC) framework is designed around a DispatcherServlet that dispatches requests to handlers, with configurable handler mappings, view resolution, locale and theme resolution as well as support for uploading files.

What is DefaultJmsListenerContainerFactory?

Class DefaultJmsListenerContainerFactory A JmsListenerContainerFactory implementation to build a regular DefaultMessageListenerContainer . This should be the default for most users and a good transition paths for those that are used to build such container definition manually.

Why is @ResponseStatus used?

We can use @ResponseStatus to mark a method or an exception class with a status code and reason that should be returned. On invoking the marked handler method or when a specified exception is thrown, the HTTP status will be set to the one defined using @ResponseStatus annotation.

What is the purpose of @RequestBody?

Simply put, the @RequestBody annotation maps the HttpRequest body to a transfer or domain object, enabling automatic deserialization of the inbound HttpRequest body onto a Java object. Spring automatically deserializes the JSON into a Java type, assuming an appropriate one is specified.

What is @ResponseBody and @RequestBody?

@RequestBody and @ResponseBody annotations are used to bind the HTTP request/response body with a domain object in method parameter or return type. Behind the scenes, these annotation uses HTTP Message converters to convert the body of HTTP request/response to domain objects.

What is HandlerMethodArgumentResolver?

Method argument resolvers are a great tool to keep your Spring application clean. Implementing the interface HandlerMethodArgumentResolver you can extract the logic needed to instantiate a custom-typed argument to a component and keep your controllers clean.

What is Springmvc?

A Spring MVC is a Java framework which is used to build web applications. It follows the Model-View-Controller design pattern. It implements all the basic features of a core spring framework like Inversion of Control, Dependency Injection.

What is a DispatcherServlet?

The DispatcherServlet is the front controller in Spring web applications. It’s used to create web applications and REST services in Spring MVC. In a traditional Spring web application, this servlet is defined in the web. xml file.

What is ConcurrentKafkaListenerContainerFactory?

ConcurrentKafkaListenerContainerFactory is from the spring framework and can be used in the spring ecosystem. KafkaConsumer is from Apache’s Java sdk for Kafka. Both are just different tools/apis to implement Kafka consumers on Java. Just might differ in the capabilities provided.