Spring Service locator, which can fetch beans from anywhere

By holding the spring application scenario ApplicationContext, you can get the beans from anywhere.

1 ImportOrg.apache.commons.logging.Log;2 Importorg.apache.commons.logging.LogFactory;3 ImportOrg.springframework.beans.factory.DisposableBean;4 ImportOrg.springframework.context.ApplicationContext;5 ImportOrg.springframework.context.ApplicationContextAware;6 7 /**8 * Service Locator9 * Hold the Spring application scenario and get the beans from anywhere.Ten  */ One  Public Final classServicelocatorImplementsApplicationcontextaware, Disposablebean { A      -     Private StaticLog logger = Logfactory.getlog (servicelocator.class); -     Private StaticApplicationContext context =NULL; the      -     /** - * Implement the Applicationcontextaware interface and inject the context into the static variable. -      * @paramContext +      */ - @Override +      Public voidSetapplicationcontext (ApplicationContext context) { ALogger.debug ("injected the ApplicationContext into Servicelocator:" +context); at         if(Servicelocator.context! =NULL) { -Logger.debug ("[------------ApplicationContext in the Servicelocator" + -"is covered, as the original ApplicationContext is:" -+ Servicelocator.context + "------------]"); -         } -Servicelocator.context =context; in     } -      to     /** + * Implement the Disposablebean interface to clean up static variables when the context is closed. -      */ the @Override *      Public voidDestroy ()throwsException { $ servicelocator.clear ();Panax Notoginseng     } -      the     /** + * Gets the applicationcontext stored in the static variable. A      * @return the      */ +      Public StaticApplicationContext Getapplicationcontext () { - assertcontextinjected (); $         returncontext; $     } -      -     /** the * Get the bean from the spring scenario and automatically transform it to the type of the assigned value object. -      * @paramName Bean namesWuyi      * @returnBean Object the      */ -@SuppressWarnings ("Unchecked") Wu      Public Static<T>T GetService (String name) { - assertcontextinjected (); About         return(T) Context.getbean (name); $     } -      -     /** - * Get the bean from the spring scenario and automatically transform it to the type of the assigned value object. A      * @paramRequiredtype Bean Class +      * @returnBean Object the      */ -      Public Static<T> T GetService (class<t>requiredtype) { $ assertcontextinjected (); the         returnContext.getbean (requiredtype); the     } the      the     /** - * Clear the ApplicationContext in Servicelocator in      */ the      Public Static voidClear () { theLogger.debug ("Clear ApplicationContext in Servicelocator:" +context); AboutContext =NULL; the     } the      the     /** + * Check that the ApplicationContext is not empty. -      */ the     Private Static voidassertcontextinjected () {Bayi         if(Context = =NULL) { the             Throw NewIllegalStateException ("Applicaitoncontext not injected," + the"As defined in the Context.xml servicelocator"); -         } -     } the}

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Call the GetService function, which is obtained by name and type.

1     /**2 * Get the bean from the spring scenario and automatically transform it to the type of the assigned value object.3      * @paramName Bean names4      * @returnBean Object5      */6@SuppressWarnings ("Unchecked")7      Public Static<T>T GetService (String name) {8 assertcontextinjected ();9         return(T) Context.getbean (name);Ten     } One      A     /** - * Get the bean from the spring scenario and automatically transform it to the type of the assigned value object. -      * @paramRequiredtype Bean Class the      * @returnBean Object -      */ -      Public Static<T> T GetService (class<t>requiredtype) { - assertcontextinjected (); +         returnContext.getbean (requiredtype); -}

Spring Service locator, which can fetch beans from anywhere