![]() Servlet container to manage their life-cycle by declaring "targetFilterLifecycle" filter init-param as "true" on web.xml while declaring the DelegatingFilterProxy filter as shown below:Ħ. the beans which implements Filter interface and handle request delegated by delegating Spring proxy, but you can ask Who manages the life-cycle of filter bean in Spring?Īs explained in the previous example, by default Spring container manages the life-cycle of filter beans in Spring i.e. Servlet container manages the filter lifecycle instead of the Spring container.Ĥ. Though you can enforce invocation of the Filter.init() and stroy() lifecycle methods on the target bean by specifying the "targetFilterLifecycle" filter init-param as "true". If you want to learn more, I suggest joining Spring Security Core: Beginner to Guru course on Udemy to learn more about how delegating filter proxy works in Spring security. filter.DelegatingFilterProxyĪt runtime, delegating filter proxy delegates HTTP requests to a bean class for filtering. Is declared on their behalf on web.xml as filter as shown below: ![]() In Spring security, these filters are also Spring bean so that they can take advantage of Spring's dependency injection features, hence they are declared inside the Spring configuration file and a delegating filter proxy ( DelegatingFilterProxy) Since filters need to be declared in the web.xml so that the Servlet container can invoke them before passing the request to the actual Servlet class.
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