Java Code Examples for org.springframework.web.context.ConfigurableWebApplicationContext#setEnvironment()

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Example 1
Source File: FrameworkServlet.java    From java-technology-stack with MIT License 6 votes vote down vote up 
/**
 * Instantiate the WebApplicationContext for this servlet, either a default
 * {@link org.springframework.web.context.support.XmlWebApplicationContext}
 * or a {@link #setContextClass custom context class}, if set.
 * <p>This implementation expects custom contexts to implement the
 * {@link org.springframework.web.context.ConfigurableWebApplicationContext}
 * interface. Can be overridden in subclasses.
 * <p>Do not forget to register this servlet instance as application listener on the
 * created context (for triggering its {@link #onRefresh callback}, and to call
 * {@link org.springframework.context.ConfigurableApplicationContext#refresh()}
 * before returning the context instance.
 * @param parent the parent ApplicationContext to use, or {@code null} if none
 * @return the WebApplicationContext for this servlet
 * @see org.springframework.web.context.support.XmlWebApplicationContext
 */
protected WebApplicationContext createWebApplicationContext(@Nullable ApplicationContext parent) {
	Class<?> contextClass = getContextClass();
	if (!ConfigurableWebApplicationContext.class.isAssignableFrom(contextClass)) {
		throw new ApplicationContextException(
				"Fatal initialization error in servlet with name '" + getServletName() +
				"': custom WebApplicationContext class [" + contextClass.getName() +
				"] is not of type ConfigurableWebApplicationContext");
	}
	ConfigurableWebApplicationContext wac =
			(ConfigurableWebApplicationContext) BeanUtils.instantiateClass(contextClass);

	wac.setEnvironment(getEnvironment());
	wac.setParent(parent);
	String configLocation = getContextConfigLocation();
	if (configLocation != null) {
		wac.setConfigLocation(configLocation);
	}
	configureAndRefreshWebApplicationContext(wac);

	return wac;
}
Example 2
Source File: FrameworkServlet.java    From lams with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Instantiate the WebApplicationContext for this servlet, either a default
 * {@link org.springframework.web.context.support.XmlWebApplicationContext}
 * or a {@link #setContextClass custom context class}, if set.
 * <p>This implementation expects custom contexts to implement the
 * {@link org.springframework.web.context.ConfigurableWebApplicationContext}
 * interface. Can be overridden in subclasses.
 * <p>Do not forget to register this servlet instance as application listener on the
 * created context (for triggering its {@link #onRefresh callback}, and to call
 * {@link org.springframework.context.ConfigurableApplicationContext#refresh()}
 * before returning the context instance.
 * @param parent the parent ApplicationContext to use, or {@code null} if none
 * @return the WebApplicationContext for this servlet
 * @see org.springframework.web.context.support.XmlWebApplicationContext
 */
protected WebApplicationContext createWebApplicationContext(ApplicationContext parent) {
	Class<?> contextClass = getContextClass();
	if (this.logger.isDebugEnabled()) {
		this.logger.debug("Servlet with name '" + getServletName() +
				"' will try to create custom WebApplicationContext context of class '" +
				contextClass.getName() + "'" + ", using parent context [" + parent + "]");
	}
	if (!ConfigurableWebApplicationContext.class.isAssignableFrom(contextClass)) {
		throw new ApplicationContextException(
				"Fatal initialization error in servlet with name '" + getServletName() +
				"': custom WebApplicationContext class [" + contextClass.getName() +
				"] is not of type ConfigurableWebApplicationContext");
	}
	ConfigurableWebApplicationContext wac =
			(ConfigurableWebApplicationContext) BeanUtils.instantiateClass(contextClass);

	wac.setEnvironment(getEnvironment());
	wac.setParent(parent);
	wac.setConfigLocation(getContextConfigLocation());

	configureAndRefreshWebApplicationContext(wac);

	return wac;
}
Example 3
Source File: FrameworkServlet.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up 
/**
 * Instantiate the WebApplicationContext for this servlet, either a default
 * {@link org.springframework.web.context.support.XmlWebApplicationContext}
 * or a {@link #setContextClass custom context class}, if set.
 * <p>This implementation expects custom contexts to implement the
 * {@link org.springframework.web.context.ConfigurableWebApplicationContext}
 * interface. Can be overridden in subclasses.
 * <p>Do not forget to register this servlet instance as application listener on the
 * created context (for triggering its {@link #onRefresh callback}, and to call
 * {@link org.springframework.context.ConfigurableApplicationContext#refresh()}
 * before returning the context instance.
 * @param parent the parent ApplicationContext to use, or {@code null} if none
 * @return the WebApplicationContext for this servlet
 * @see org.springframework.web.context.support.XmlWebApplicationContext
 */
protected WebApplicationContext createWebApplicationContext(ApplicationContext parent) {
	Class<?> contextClass = getContextClass();
	if (this.logger.isDebugEnabled()) {
		this.logger.debug("Servlet with name '" + getServletName() +
				"' will try to create custom WebApplicationContext context of class '" +
				contextClass.getName() + "'" + ", using parent context [" + parent + "]");
	}
	if (!ConfigurableWebApplicationContext.class.isAssignableFrom(contextClass)) {
		throw new ApplicationContextException(
				"Fatal initialization error in servlet with name '" + getServletName() +
				"': custom WebApplicationContext class [" + contextClass.getName() +
				"] is not of type ConfigurableWebApplicationContext");
	}
	ConfigurableWebApplicationContext wac =
			(ConfigurableWebApplicationContext) BeanUtils.instantiateClass(contextClass);

	wac.setEnvironment(getEnvironment());
	wac.setParent(parent);
	wac.setConfigLocation(getContextConfigLocation());

	configureAndRefreshWebApplicationContext(wac);

	return wac;
}
Example 4
Source File: FrameworkServlet.java    From spring-analysis-note with MIT License 5 votes vote down vote up 
/**
 * Instantiate the WebApplicationContext for this servlet, either a default
 * {@link org.springframework.web.context.support.XmlWebApplicationContext}
 * or a {@link #setContextClass custom context class}, if set.
 * <p>This implementation expects custom contexts to implement the
 * {@link org.springframework.web.context.ConfigurableWebApplicationContext}
 * interface. Can be overridden in subclasses.
 * <p>Do not forget to register this servlet instance as application listener on the
 * created context (for triggering its {@link #onRefresh callback}, and to call
 * {@link org.springframework.context.ConfigurableApplicationContext#refresh()}
 * before returning the context instance.
 * @param parent the parent ApplicationContext to use, or {@code null} if none
 * @return the WebApplicationContext for this servlet
 * @see org.springframework.web.context.support.XmlWebApplicationContext
 */
protected WebApplicationContext createWebApplicationContext(@Nullable ApplicationContext parent) {
	// 允许我们自定义容器的类型，通过 contextClass 属性进行配置
	// 但是类型必须要继承 ConfigurableWebApplicationContext，不然将会报错
	Class<?> contextClass = getContextClass();
	if (!ConfigurableWebApplicationContext.class.isAssignableFrom(contextClass)) {
		throw new ApplicationContextException(
				"Fatal initialization error in servlet with name '" + getServletName() +
				"': custom WebApplicationContext class [" + contextClass.getName() +
				"] is not of type ConfigurableWebApplicationContext");
	}
	// 通过反射来创建 contextClass
	ConfigurableWebApplicationContext wac =
			(ConfigurableWebApplicationContext) BeanUtils.instantiateClass(contextClass);

	wac.setEnvironment(getEnvironment());
	wac.setParent(parent);
	// 获取 contextConfigLocation 属性，配置在 servlet 初始化函数中
	String configLocation = getContextConfigLocation();
	if (configLocation != null) {
		wac.setConfigLocation(configLocation);
	}
	// 初始化 Spring 环境包括加载配置环境
	configureAndRefreshWebApplicationContext(wac);

	return wac;
}
Example 5
Source File: SingleAppDispatcherServlet.java    From cuba with Apache License 2.0 5 votes vote down vote up 
@Override
@Nonnull
protected WebApplicationContext createWebApplicationContext(@Nullable ApplicationContext parent) {
    if (this.logger.isDebugEnabled()) {
        this.logger.debug(
                String.format("Servlet with name '%s' will try to create custom WebApplicationContext context of class '%s', using parent context [%s]",
                        getServletName(), CubaXmlWebApplicationContext.class.getName(), parent));
    }
    ConfigurableWebApplicationContext wac = new CubaXmlWebApplicationContext() {
        @Override
        protected ResourcePatternResolver getResourcePatternResolver() {
            return new SingleAppResourcePatternResolver(this, libFolder);
        }
    };

    String contextConfigLocation = getContextConfigLocation();
    if (contextConfigLocation == null) {
        throw new RuntimeException("Unable to determine context config location");
    }

    wac.setEnvironment(getEnvironment());
    wac.setParent(parent);
    wac.setConfigLocation(contextConfigLocation);

    configureAndRefreshWebApplicationContext(wac);

    return wac;
}