package common.service.utils;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候中取出ApplicaitonContext.
 * 
 * 使用范例:
 * ApplicationContext cx=SpringContextHolder.getApplicationContext();
 * org.springframework.jdbc.core.JdbcTemplate jdbcTemplate=SpringContextHolder.getBean("jdbcTemplate");
 * 
 * 使用WebApplicationContextUtils也可以实现一样的效果
 * ConfigService configService = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext()).getBean(ConfigService.class);
 * 
 */
public class SpringContextHolder implements ApplicationContextAware {
	private static ApplicationContext applicationContext;

	/**
	 * 实现ApplicationContextAware接口的context注入函数, 将其存入静态变量.
	 */
	public void setApplicationContext(ApplicationContext applicationContext) {
		SpringContextHolder.applicationContext = applicationContext; // NOSONAR
	}

	/**
	 * 取得存储在静态变量中的ApplicationContext.
	 */
	public static ApplicationContext getApplicationContext() {
		checkApplicationContext();
		return applicationContext;
	}

	/**
	 * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
	 */
	@SuppressWarnings("unchecked")
	public static <T> T getBean(String name) {
		checkApplicationContext();
		return (T) applicationContext.getBean(name);
	}

	/**
	 * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
	 */
	@SuppressWarnings("unchecked")
	public static <T> T getBean(Class<T> clazz) {
		checkApplicationContext();
		return (T) applicationContext.getBeansOfType(clazz);
	}

	/**
	 * 清除applicationContext静态变量.
	 */
	public static void cleanApplicationContext() {
		applicationContext = null;
	}

	private static void checkApplicationContext() {
		if (applicationContext == null) {
			throw new IllegalStateException(
					"applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder");
		}
	}
}

package common.service.utils;

import java.util.Map;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 * 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候中取出ApplicaitonContext.
 * 
 * 使用范例:
 * ApplicationContext cx=SpringContextHolder.getApplicationContext();
 * org.springframework.jdbc.core.JdbcTemplate jdbcTemplate=SpringContextHolder.getBean("jdbcTemplate");
 * 
 * 使用WebApplicationContextUtils也可以实现一样的效果
 * ConfigService configService = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext()).getBean(ConfigService.class);
 * 
 */
public class SpringContextHolder implements ApplicationContextAware {
	private static ApplicationContext applicationContext;

	/**
	 * 实现ApplicationContextAware接口的context注入函数, 将其存入静态变量.
	 */
	public void setApplicationContext(ApplicationContext applicationContext) {
		SpringContextHolder.applicationContext = applicationContext; // NOSONAR
	}

	/**
	 * 取得存储在静态变量中的ApplicationContext.
	 */
	public static ApplicationContext getApplicationContext() {
		checkApplicationContext();
		return applicationContext;
	}

	/**
	 * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
	 */
	@SuppressWarnings("unchecked")
	public static <T> T getBean(String name) {
		checkApplicationContext();
		return (T) applicationContext.getBean(name);
	}

	/**
	 * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
	 */
	@SuppressWarnings("unchecked")
	public static <T> T getBean(Class<T> clazz) {
		checkApplicationContext();
		return applicationContext.getBean(clazz);
	}

	/**
	 * 清除applicationContext静态变量.
	 */
	public static void cleanApplicationContext() {
		applicationContext = null;
	}

	private static void checkApplicationContext() {
		if (applicationContext == null) {
			throw new IllegalStateException(
					"applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder");
		}
	}
}

fix getBean bug