Spring中ApplicationContextAware的使用方法详解

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import com.co.ayz.rpc.registry.ServiceRegistry;

public class RpcServer implements ApplicationContextAware{

    private ApplicationContext context;

        @Override
    public void setApplicationContext(ApplicationContext applicationContext)
            throws BeansException {
        // TODO Auto-generated method stub
        context = applicationContext;       
    }   
     //获得applicationContext
    public static ApplicationContext getApplicationContext() {
        //assertContextInjected();
        return context;
    }    
    public static void clearHolder(){
        context=null;
    }
    //获取Bean
    public static <T> T getBean(Class<T> requiredType){
        //assertContextInjected();
        return (T) getApplicationContext().getBean(requiredType);
    }
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name){
        assertContextInjected();
        return (T) getApplicationContext().getBean(name);
    }    
    //判断application是否为空
    public static void assertContextInjected(){
        Validate.isTrue(context==null, "application未注入 ，请在springContext.xml中注入SpringHolder!");
    }
}

/**  
* @Title: SpringJobBeanFactory.java
* @Package com.founder.mrp.job
* @Description: TODO
* @version V1.0  
*/

package com.founder.mrp.job;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringJobBeanFactory implements ApplicationContextAware {

    
    private static ApplicationContext applicationContext;
    
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringJobBeanFactory.applicationContext=applicationContext;
        
    }
     public static ApplicationContext getApplicationContext() {
            return applicationContext;
    }
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
            if (applicationContext == null){
                return null;
            }
            return (T)applicationContext.getBean(name);
      }
}


使用：

TypeSetErpService typeSetErpServ = SpringJobBeanFactory.getBean("typeSetErpServiceImpl");