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  • Spring_手动获取Bean

    1.SpringContextHolder.java

    package com.lkb.util;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    
    /**
     * SpringContextHolder
     *
     * @author Lilin
     * @date 2015/12/30
     */
    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");
            }
        }
    }

    2.application.xml

    <aop:aspectj-autoproxy proxy-target-class="true"/>
    
     <aop:aspectj-autoproxy proxy-target-class="true"/>
    
    <bean class="com.lkb.util.SpringContextHolder" lazy-init="false" />
    

    3.调用

    AuthServiceImpl authService =SpringContextHolder.getBean("authServiceImpl");
    

      

      

    
    
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  • 原文地址:https://www.cnblogs.com/gisblogs/p/5089152.html
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