SpringContextUtils-Springboot有用的工具栏通过bean name去容器那对象实例

本文介绍了一个用于在SpringBoot应用中便捷获取ApplicationContext及Bean的工具类SpringContextUtils。该工具类通过实现ApplicationContextAware接口，使得开发者能够轻松地在任何地方注入和使用Spring管理的Bean，提高了代码的灵活性和可维护性。

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package com.xunlei.chat.admin.websocket.util;

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

@Component
public class SpringContextUtils implements ApplicationContextAware
{
/**
* 上下文对象实例
*/
private static ApplicationContext applicationContext;

@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    this.applicationContext = applicationContext;
}

/**
 * 获取applicationContext
 *
 * @return
 */
public static ApplicationContext getApplicationContext() {
    return applicationContext;
}

/**
 * 通过name获取 Bean.
 *
 * @param name
 * @return
 */
public static Object getBean(String name) {
    return getApplicationContext().getBean(name);
}

/**
 * 通过class获取Bean.
 *
 * @param clazz
 * @param <T>
 * @return
 */
public static <T> T getBean(Class<T> clazz) {
    return getApplicationContext().getBean(clazz);
}

/**
 * 通过name,以及Clazz返回指定的Bean
 *
 * @param name
 * @param clazz
 * @param <T>
 * @return
 */
public static <T> T getBean(String name, Class<T> clazz) {
    return getApplicationContext().getBean(name, clazz);
}

}

用法如下
protected static final ApplicationContext applicationContext = SpringContextUtils.getApplicationContext();
protected static final RedisService redisService = (RedisService) applicationContext.getBean(RedisService.class);