What is OncePerRequestFilter in spring?

public abstract class OncePerRequestFilter extends GenericFilterBean. Filter base class that guarantees to be just executed once per request, on any servlet container. It provides a doFilterInternal(HttpServletRequest, HttpServletResponse, FilterChain) method with HttpServletRequest and HttpServletResponse arguments.

What is the use of FilterRegistrationBean?

The FilterRegistrationBean is, as the name implies, a bean used to provide configuration to register Filter instances. It can be used to provide things like URL mappings etc.

What is the use of OncePerRequestFilter?

Class OncePerRequestFilter. Filter base class that aims to guarantee a single execution per request dispatch, on any servlet container. It provides a doFilterInternal(HttpServletRequest, HttpServletResponse, FilterChain) method with HttpServletRequest and HttpServletResponse arguments.

What is a FilterRegistrationBean in Spring?

Class FilterRegistrationBean A ServletContextInitializer to register Filter s in a Servlet 3.0+ container. Similar to the registration features provided by ServletContext but with a Spring Bean friendly design. The Filter must be specified before calling RegistrationBean.

What is the use of WebSecurityConfigurerAdapter in Spring boot?

In Spring Boot 2, if we want our own security configuration, we can simply add a custom WebSecurityConfigurerAdapter. This will disable the default auto-configuration and enable our custom security configuration. Spring Boot 2 also uses most of Spring Security’s defaults.

What is the difference between filter and interceptor in spring?

Filters can modify inbound and outbound requests and responses including modification of headers, entity and other request/response parameters. Interceptors are used primarily for modification of entity input and output streams. You can use interceptors for example to zip and unzip output and input entity streams.

What is DeferredResult in spring?

DeferredResult, available from Spring 3.2 onwards, assists in offloading a long-running computation from an http-worker thread to a separate thread. Although the other thread will take some resources for computation, the worker threads are not blocked in the meantime and can handle incoming client requests.

What is a HttpServletRequest?

HttpServletRequest is an interface and extends the ServletRequest interface. By extending the ServletRequest this interface is able to allow request information for HTTP Servlets. Object of the HttpServletRequest is created by the Servlet container and, then, it is passed to the service method (doGet(), doPost(), etc.)

What is difference between interceptor and filter?

Interceptors share a common API for the server and the client side. Whereas filters are primarily intended to manipulate request and response parameters like HTTP headers, URIs and/or HTTP methods, interceptors are intended to manipulate entities, via manipulating entity input/output streams.

How many filters are there in Spring Security?

There are few important points to remember: Filters are executing in a specific order (Look at the number). The filters can change based on how we configure the modules. Each incoming request will go through all these filters (total 15 in our case) following a specific order.

What is the difference between filter and Interceptor in Spring?

What is usage of @secured annotation?

Using @Secured Annotation. The @Secured annotation is used to specify a list of roles on a method. So, a user only can access that method if she has at least one of the specified roles.

What is difference between WebSecurity and HttpSecurity?

Summary. We can actually consider that WebSecurity is the only external outlet for Spring Security, while HttpSecurity is just the way internal security policies are defined; WebSecurity is aligned to FilterChainProxy , while HttpSecurity is aligned to SecurityFilterChain .