springContextUtil

妖狐艹你老母 2022-03-30 06:46 110阅读 0赞

工具类用来获取bean,

applicationContext.xml

工具类:

![复制代码][copycode.gif]

package com.hna.hka.rmc.common.util;
    
    import javax.servlet.ServletContext;
    
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    import org.springframework.web.context.ServletContextAware;
    
    /**
     * 从Spring容器中取得对象
     * @author weiyuan
     *
     */
    public class SpringContextUtil implements ApplicationContextAware,
            ServletContextAware {
    
        private static ApplicationContext applicationContext; // Spring上下文对象.静态变量,可在任何代码任何地方任何时候中取出ApplicaitonContext. 
    
        private static ServletContext servletContext;// 注入 系统上下文对象
        
        Log log = LogFactory.getLog(SpringContextUtil.class);
        /**
         * 实现ApplicationContextAware接口的回调方法，设置上下文环境
         * 
         * @param applicationContext
         * @throws BeansException
         */
        public void setApplicationContext(ApplicationContext applicationContext) {
            log.debug(" com.hna.hka.rmc.common.util.SpringContextUtil setApplicationContext "+applicationContext);
            SpringContextUtil.applicationContext = applicationContext;
        }
    
        /**
         * @return ApplicationContext
         */
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }
    
        /**
         * 获取对象
         * 
         * @param name
         * @return Object 一个以所给名字注册的bean的实例
         * @throws BeansException
         */
        public static Object getBean(String name) throws BeansException {
            return applicationContext.getBean(name);
        }
    
        /**
         * 功能 : 实现 ServletContextAware接口,由Spring自动注入 系统上下文对象
         * 
         **/
        public void setServletContext(ServletContext servletContext) {
            SpringContextUtil.servletContext = servletContext;
        }
    
        /**
         * @return ServletContext
         */
        public static ServletContext getServletContext() {
            return servletContext;
        }
    }
    
    
    java调用:

private Template template = (Template) SpringContextUtil.getBean("Template");

[copycode.gif]: /images/20220330/f9705e1a308e41febca668454b92f88e.png