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How Do I Fix The Spring Access Context From A Servlet?

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    This blog post outlines some of the potential causes that a Spring Access context can cause from a servlet, and then I will suggest some possible fixes that you can try to resolve the issue.

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    spring access context from servlet

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    I fully understand that this question has been answered, but I want to share all the Kotlin code I have created to work with spring context.

    spring access context from servlet

    I have never been an expert, so I am open to criticism, advice and advice:

      package com.company.web.springimport com.company.jpa.spring.MyBusinessAppConfigimport org.springframework.beans.factory.annotation.Autowiredimport org.springframework.context.ApplicationContextimport org.springframework.context.annotation.AnnotationConfigApplicationContextimport org.springframework.context.annotation.ComponentScanimport org.springframework.context.annotation.Configurationimport org.springframework.context.annotation.Importimport org.springframework.stereotype.Componentimport org.springframework.web.context.ContextLoaderimport org.springframework.web.context.WebApplicationContextimport org.springframework.web.context.support.WebApplicationContextUtilsImport [email protected]@Import (value is [MyBusinessAppConfig :: class])@ComponentScan (basePackageClasses = [SpringUtils :: class])open the WebAppConfig department/ ** * * Singleton object to create Si (only required), submit and reuse Spring application context. * * If you instantiate almost all classes yourself, Spring Context does not automatically manage their properties, but you can hook them up yourself. * This class allows you to find circumstances or create a new one, in all cases you can bind property objects that are not * created with Spring (ex: usually servlets, all created by the webserver). * Sometimes 4. SpringContext is created in jUnit Tests spaces or on pageIn the application, or simply manually. Independent * From the beginning, I recommend your organization to configure Spring configuration in terms of parsing this SpringUtils package, so 'springAppContext' * The property is used in early spring and automatically connects to SpringUtils merchandising. * * Ps: Even if your new seasonal setup doesn't include SpringUtils @Component, it will work, but the master page will create a second spring context for your application. * /@ Coming upSpringUtils object        var springAppContext: ApplicationContext? it's zero    @Autowired    set value)        Field implies value        / **     * Try to find and reuse your Spring application context. If nothing is found, a repository is created with it for reuse.    7. @return returns the spring context.     * /    fun ctx (): ApplicationContext        if (springAppContext! = null)            println ("achou")            send springAppContext as ApplicationContext;                // Springcontext is definitely not automatically connected. Keep trying to buy thread ...        val webContext means ContextLoader.getCurrentWebApplicationContext ()        if (webContext! = null)            springAppContext = webContext;            println ("No server")            return springAppContext as WebApplicationContext;                println ("nao acou, wai kriar")        // No new seasonal context found. Start by creating a new concrete ...        val applicationContext = AnnotationConfigApplicationContext WebAppConfig :: class (.java)        // save the context so we can use it next time        springAppContext = applicationContext       Return application context        / **     2. @return the Spring context associated with WebApplication.    (Space) @param createNewWhenNotFound If true, it will set up a new Spring context to be reused if no one is found in your ServletContext.    (empty) @param httpServlet the @WebServlet.     * /    super ctx (httpServlet: HttpServlet, createNewWhenNotFound: Boolean): ApplicationContext        To attempt            val webContext is the same as WebApplicationContextUtils.findWebApplicationContext (httpServlet.servletContext)            it doesn't matter if (webContext! = null)                Back webContext                        if (createnewwhennotfound) // create a new one                ctx ()             different                Throw a NullPointerException ("Unable to find the Spring Application context.");                    catch (uh: IllegalStateException)            if (createNewWhenNotFound)                // create a replacement                return ctx ()                        have uh;             

    From thisAt the moment, the Spring context is available to everyone and can call the same method regardless of the infrastructure (Junit tests, components, hand-crafted class instances), which is very similar to this servlet:

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  •   @WebServlet (java name implies "MyWebHook", value = "/ WebHook")public class MyWebServlet extends HttpServlet    independent MyBean byBean            = SpringUtils.INSTANCE.ctx (it really is) .getBean (MyBean.class);    public MyWebServlet ()     

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