Java Code Examples for org.springframework.web.context.ContextLoader#getCurrentWebApplicationContext()

/**
 * Process {@code @Autowired} injection for the given target object,
 * based on the current web application context.
 * <p>Intended for use as a delegate.
 * @param target the target object to process
 * @see org.springframework.web.context.ContextLoader#getCurrentWebApplicationContext()
 */
public static void processInjectionBasedOnCurrentContext(Object target) {
	Assert.notNull(target, "Target object must not be null");
	WebApplicationContext cc = ContextLoader.getCurrentWebApplicationContext();
	if (cc != null) {
		AutowiredAnnotationBeanPostProcessor bpp = new AutowiredAnnotationBeanPostProcessor();
		bpp.setBeanFactory(cc.getAutowireCapableBeanFactory());
		bpp.processInjection(target);
	}
	else {
		if (logger.isDebugEnabled()) {
			logger.debug("Current WebApplicationContext is not available for processing of " +
					ClassUtils.getShortName(target.getClass()) + ": " +
					"Make sure this class gets constructed in a Spring web application. Proceeding without injection.");
		}
	}
}
 

/**
 * Look for the WebApplicationContext associated with the DispatcherServlet
 * that has initiated request processing, and for the global context if none
 * was found associated with the current request. The global context will
 * be found via the ServletContext or via ContextLoader's current context.
 * <p>NOTE: This variant remains compatible with Servlet 2.5, explicitly
 * checking a given ServletContext instead of deriving it from the request.
 * @param request current HTTP request
 * @param servletContext current servlet context
 * @return the request-specific WebApplicationContext, or the global one
 * if no request-specific context has been found, or {@code null} if none
 * @since 4.2.1
 * @see DispatcherServlet#WEB_APPLICATION_CONTEXT_ATTRIBUTE
 * @see WebApplicationContextUtils#getWebApplicationContext(ServletContext)
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
@Nullable
public static WebApplicationContext findWebApplicationContext(
		HttpServletRequest request, @Nullable ServletContext servletContext) {

	WebApplicationContext webApplicationContext = (WebApplicationContext) request.getAttribute(
			DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE);
	if (webApplicationContext == null) {
		if (servletContext != null) {
			webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
		}
		if (webApplicationContext == null) {
			webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
		}
	}
	return webApplicationContext;
}
 

/**
 * Process {@code @Autowired} injection for the given target object,
 * based on the current web application context.
 * <p>Intended for use as a delegate.
 * @param target the target object to process
 * @see org.springframework.web.context.ContextLoader#getCurrentWebApplicationContext()
 */
public static void processInjectionBasedOnCurrentContext(Object target) {
	Assert.notNull(target, "Target object must not be null");
	WebApplicationContext cc = ContextLoader.getCurrentWebApplicationContext();
	if (cc != null) {
		AutowiredAnnotationBeanPostProcessor bpp = new AutowiredAnnotationBeanPostProcessor();
		bpp.setBeanFactory(cc.getAutowireCapableBeanFactory());
		bpp.processInjection(target);
	}
	else {
		if (logger.isDebugEnabled()) {
			logger.debug("Current WebApplicationContext is not available for processing of " +
					ClassUtils.getShortName(target.getClass()) + ": " +
					"Make sure this class gets constructed in a Spring web application. Proceeding without injection.");
		}
	}
}
 

/**
 * Retrieve the Spring {@link WebApplicationContext} to use.
 * The default implementation returns the current {@link WebApplicationContext}
 * as registered for the thread context class loader.
 * @return the current WebApplicationContext (never {@code null})
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
protected WebApplicationContext getWebApplicationContext() {
	WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext();
	if (wac == null) {
		throw new IllegalStateException("No WebApplicationContext registered for current thread - " +
				"consider overriding SpringWebConstraintValidatorFactory.getWebApplicationContext()");
	}
	return wac;
}
 

private void processContext() {
    WebApplicationContext rootContext = ContextLoader.getCurrentWebApplicationContext();
    
    System.out.println("root context : " + rootContext);
    System.out.println("root context Beans: " + Arrays.asList(rootContext.getBeanDefinitionNames()));

    System.out.println("context : " + webApplicationContext);
    System.out.println("context Beans: " + Arrays.asList(webApplicationContext.getBeanDefinitionNames()));
}
 

/**
 * Retrieve the Spring {@link WebApplicationContext} to use.
 * The default implementation returns the current {@link WebApplicationContext}
 * as registered for the thread context class loader.
 * @return the current WebApplicationContext (never {@code null})
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
protected WebApplicationContext getWebApplicationContext() {
	WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext();
	if (wac == null) {
		throw new IllegalStateException("No WebApplicationContext registered for current thread - " +
				"consider overriding SpringWebConstraintValidatorFactory.getWebApplicationContext()");
	}
	return wac;
}
 

/**
 * Retrieve the Spring {@link WebApplicationContext} to use.
 * The default implementation returns the current {@link WebApplicationContext}
 * as registered for the thread context class loader.
 * @return the current WebApplicationContext (never {@code null})
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
protected WebApplicationContext getWebApplicationContext() {
	WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext();
	if (wac == null) {
		throw new IllegalStateException("No WebApplicationContext registered for current thread - " +
				"consider overriding SpringWebConstraintValidatorFactory.getWebApplicationContext()");
	}
	return wac;
}
 

private static void initValidator() {
	if (validator == null) {
		WebApplicationContext wac = ContextLoader
				.getCurrentWebApplicationContext();
		ValidatorFactory validatorFactory = (ValidatorFactory) wac
				.getBean("validator");
		validator = validatorFactory.getValidator();
	}
}
 

/**
 * Creates a new TotalScoresBean object.
 */
public ExportResponsesBean() {
	this(ContextLoader.getCurrentWebApplicationContext());
	log.debug("Creating a new ExportResponsesBean");
}
 

/**
 * Look for the WebApplicationContext associated with the DispatcherServlet
 * that has initiated request processing, and for the global context if none
 * was found associated with the current request. The global context will
 * be found via the ServletContext or via ContextLoader's current context.
 * <p>NOTE: This variant remains compatible with Servlet 2.5, explicitly
 * checking a given ServletContext instead of deriving it from the request.
 * @param request current HTTP request
 * @param servletContext current servlet context
 * @return the request-specific WebApplicationContext, or the global one
 * if no request-specific context has been found, or {@code null} if none
 * @since 4.2.1
 * @see DispatcherServlet#WEB_APPLICATION_CONTEXT_ATTRIBUTE
 * @see WebApplicationContextUtils#getWebApplicationContext(ServletContext)
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
public static WebApplicationContext findWebApplicationContext(
		HttpServletRequest request, ServletContext servletContext) {

	WebApplicationContext webApplicationContext = (WebApplicationContext) request.getAttribute(
			DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE);
	if (webApplicationContext == null) {
		if (servletContext != null) {
			webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
		}
		if (webApplicationContext == null) {
			webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
		}
	}
	return webApplicationContext;
}
 

/**
 * Look for the WebApplicationContext associated with the DispatcherServlet
 * that has initiated request processing, and for the global context if none
 * was found associated with the current request. The global context will
 * be found via the ServletContext or via ContextLoader's current context.
 * <p>NOTE: This variant remains compatible with Servlet 2.5, explicitly
 * checking a given ServletContext instead of deriving it from the request.
 * @param request current HTTP request
 * @param servletContext current servlet context
 * @return the request-specific WebApplicationContext, or the global one
 * if no request-specific context has been found, or {@code null} if none
 * @since 4.2.1
 * @see DispatcherServlet#WEB_APPLICATION_CONTEXT_ATTRIBUTE
 * @see WebApplicationContextUtils#getWebApplicationContext(ServletContext)
 * @see ContextLoader#getCurrentWebApplicationContext()
 */
public static WebApplicationContext findWebApplicationContext(
		HttpServletRequest request, ServletContext servletContext) {

	WebApplicationContext webApplicationContext = (WebApplicationContext) request.getAttribute(
			DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE);
	if (webApplicationContext == null) {
		if (servletContext != null) {
			webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
		}
		if (webApplicationContext == null) {
			webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
		}
	}
	return webApplicationContext;
}
 

public AssessmentSettingsBean() {
  this(ContextLoader.getCurrentWebApplicationContext());
}
 

public static String getPath(){
    WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext();
    JavaHome javaHome = (JavaHome) wac.getBean("javaHome");
    return javaHome.getBin();
}
 

public static ServletContext getServletContext() {
	WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();
	return context.getServletContext();
}
 

public AssessmentSettingsBean() {
  this(ContextLoader.getCurrentWebApplicationContext());
}
 

public static ServletContext getServletContext() {
	WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();
	return context.getServletContext();
}
 

public PublishedAssessmentSettingsBean() {
  this(ContextLoader.getCurrentWebApplicationContext());
}
 

/**
 * 获取ServletContext
 * 
 * @return
 */
public ServletContext getServletContent() {
	WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
	ServletContext servletContext = webApplicationContext.getServletContext();
	return servletContext;
}
 

/**
 * Returns the active {@link ApplicationContext}. Be default this method obtains
 * the context via {@link ContextLoader#getCurrentWebApplicationContext()}, which
 * finds the ApplicationContext loaded via {@link ContextLoader} typically in a
 * Servlet container environment. When not running in a Servlet container and
 * not using {@link ContextLoader}, this method should be overridden.
 * @return the {@link ApplicationContext} or {@code null}
 */
protected ApplicationContext getApplicationContext() {
	return ContextLoader.getCurrentWebApplicationContext();
}
 

/**
 * Returns the active {@link ApplicationContext}. Be default this method obtains
 * the context via {@link ContextLoader#getCurrentWebApplicationContext()}, which
 * finds the ApplicationContext loaded via {@link ContextLoader} typically in a
 * Servlet container environment. When not running in a Servlet container and
 * not using {@link ContextLoader}, this method should be overridden.
 * @return the {@link ApplicationContext} or {@code null}
 */
@Nullable
protected ApplicationContext getApplicationContext() {
	return ContextLoader.getCurrentWebApplicationContext();
}