Spring Bean

package com.supermap.sgis.util;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. * */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");        }    }}

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<bean class="com.supermap.sgis.util.SpringContextHolder" lazy-init="false" /><bean id="nativeJdbcExtractor" lazy-init="true"      class="org.springframework.jdbc.support.nativejdbc.C3P0NativeJdbcExtractor" /><bean id="oracleLobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler"      lazy-init="true">    <property name="nativeJdbcExtractor">        <ref bean="nativeJdbcExtractor" />    </property></bean><bean id="defaultLobHandler" class="org.springframework.jdbc.support.lob.DefaultLobHandler"      lazy-init="true"/>