//模擬錯(cuò)誤的使用方式
@Autowired
private static RedisUtil redisUtilBean;

public static String getMsgByRedis(){
redisUtilBean.get("xxx")  //這里redisUtilBean一定會(huì)是NULL值
}

    @Autowired
    private RedisUtil redisUtilBean;
    
    //由于靜態(tài)方法無(wú)法使用注入的Bean 定義靜態(tài)變量
    private static RedisUtil redisUtil;

    //當(dāng)容器實(shí)例化當(dāng)前受管Bean時(shí)@PostConstruct注解的方法會(huì)被自動(dòng)觸發(fā)，借此來(lái)實(shí)現(xiàn)靜態(tài)變量初始化
    @PostConstruct
    public void init(){
        this.redisUtil = redisUtilBean;
    }
    
	public static String getMsgByRedis(){
		redisUtil.get("xxx")  //這里可以正常使用
	}

@SpringBootApplication
@EnableTransactionManagement
public class Application {
	//定義靜態(tài)的ApplicationContext
    public static ConfigurableApplicationContext applicationContext;
    public static void main(String[] args) {
        applicationContext = SpringApplication.run(Application.class, args);
    }
}

	//調(diào)用  注意Application是我們SpringBoot的啟動(dòng)類
	public static String getMsgByRedis(){
		Application.applicationContext..getBean(RedisUtil .class).get("xxx") 
	}

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.toher.common.utils.spring;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Map;

/**
 * 以靜態(tài)變量保存Spring ApplicationContext, 可在任何代碼任何地方任何時(shí)候中取出ApplicaitonContext.
 *
 * @author 李懷明
 * @version 2017-01-02
 */
@Component
public class SpringContextHolder implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    //實(shí)現(xiàn)ApplicationContextAware接口的context注入函數(shù), 將其存入靜態(tài)變量.
    public void setApplicationContext(ApplicationContext applicationContext) {
        SpringContextHolder.applicationContext = applicationContext;
    }

    //取得存儲(chǔ)在靜態(tài)變量中的ApplicationContext.
    public static ApplicationContext getApplicationContext() {
        checkApplicationContext();
        return applicationContext;
    }

    //從靜態(tài)變量ApplicationContext中取得Bean, 自動(dòng)轉(zhuǎn)型為所賦值對(duì)象的類型.
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) {
        checkApplicationContext();
        return (T) applicationContext.getBean(name);
    }

    //從靜態(tài)變量ApplicationContext中取得Bean, 自動(dòng)轉(zhuǎn)型為所賦值對(duì)象的類型.
    //如果有多個(gè)Bean符合Class, 取出第一個(gè).
    @SuppressWarnings("unchecked")
    public static <T> T getBean(Class<T> clazz) {
        checkApplicationContext();
        @SuppressWarnings("rawtypes")
        Map beanMaps = applicationContext.getBeansOfType(clazz);
        if (beanMaps != null && !beanMaps.isEmpty()) {
            return (T) beanMaps.values().iterator().next();
        } else {
            return null;
        }
    }

    private static void checkApplicationContext() {
        if (applicationContext == null) {
            throw new IllegalStateException("applicaitonContext未注入,請(qǐng)?jiān)赼pplicationContext.xml中定義SpringContextHolder");
        }
    }

    public static HttpServletRequest getRequest() {
        try {
            return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        } catch (Exception e) {
            return null;
        }
    }

}

RedisUtil redisUtil= (RedisUtil) SpringContextHolder.getBean(RedisUtil.class);