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Servlet container calls servlet init() method before handling client requests. It is called just one times after servlet is created. By default it does nothing. You can override this method and it is also good for performing one-time activities. Such as database connection or reading configuration data etc.
19 paź 2021 · Initializing a Servlet: After the Servlet is instantiated successfully, the Servlet container initializes the instantiated Servlet object. The container initializes the Servlet object by invoking the Servlet.init (ServletConfig) method which accepts ServletConfig object reference as parameter.
12 sty 2022 · The element ‘load-on-startup‘ is used to load the servlet. The ‘void init()‘ method of servlet gets executed when the server gets started. The element content of ‘load-on-startup’ is Integer. if the integer is negative: The container loads servlet at any time.
29 mar 2023 · The init() Method. init() is declared as follows: public void init(ServletConfig config) throws ServletException. During initialization, the Servlet has to access two objects: ServletConfig; ServletContext; This is because to init() an object of ServletConfig is passed as a parameter.
The init method provided by the HttpServlet class initializes the servlet and logs the initialization. To do initialization specific to your servlet, override the init method following these rules: If an initialization error occurs that renders the servlet incapable of handling client requests, throw an UnavailableException .
8 sty 2024 · In this example, we’ve shown how to define servlet initialization parameters by using annotations, and how to access them with the getInitParameter() method.
27 wrz 2008 · Constructor arguments cannot be specified on an interface, so the ServletContext needs to be specified on a normal method signature. This allows the application server to know how to initialize any Servlet implementation properly.
