How to get spring application context object reference?

最新推荐文章于 2025-09-08 19:05:37 发布

转载最新推荐文章于 2025-09-08 19:05:37 发布 · 365 阅读

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本文提供了一种方法，在非Spring管理的类中获取Spring应用上下文对象，通过实现ApplicationContextAware接口并创建自定义的ApplicationContextProvider类来实现。在ApplicationContext.xml文件中声明此bean，并在需要访问上下文的地方实例化ApplicationContextProvider，从而获取到所需的Bean引用。

This page gives an example to get spring application context object with in non spring managed classes as well. It is not possible to have all classes as spring managed classes, in such classes you need to get spring application context object. This can be achieved by using ApplicationContextAware interface. Here are the steps to achieve application context object:
Create a new class and implement ApplicationContextAware method and its unimplemented method as shown below:

package com.java2novice.spring;

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

public class ApplicationContextProvider implements ApplicationContextAware{

    private static ApplicationContext context;

    public ApplicationContext getApplicationContext() {
        return context;
    }

    @Override
    public void setApplicationContext(ApplicationContext ac)
            throws BeansException {
        context = ac;
    }
}

Declate above bean in your applicationContext.xml file as shown below:

<bean id="applicationContextProvder"
                        class="com.java2novice.spring.ApplicationContextProvider"/>

And finally here is the code to access application context and getting bean reference:

ApplicationContextProvider appContext = new ApplicationContextProvider();
TestBean tb = appContext.getApplicationContext().getBean("testBean", TestBean.class);