靜態工具類：

package org.digdata.swustoj.util;

import lombok.Getter;
import lombok.NonNull;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * Created by hongfei.whf on 2016/10/31.
 */
public
 
 class ContextUtil implements ApplicationContextAware {

    @Getter
    private static volatile ApplicationContext context = null;

    /**
     * 載入Spring配置檔案時，如果Spring配置檔案中所定義的Bean類實現了ApplicationContextAware 介面，那麼在載入Spring配置檔案時，會自動呼叫ApplicationContextAware 介面中的
     * public void setApplicationContext(ApplicationContext context) throws BeansException
     * & 方法，獲得ApplicationContext物件
     *
     * @param
 
 applicationContext
     * @throws BeansException
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        context = applicationContext;
    }

    /**
     * 獲取bean
     *
     * @param clazz
     * @param beanName
     * @param
 
 <T>
     * @return
     */
    public static <T> T getBean(@NonNull Class<T> clazz, @NonNull String beanName) {
        return (T) context.getBean(beanName);
    }
}

在xml中定義bean

    <!--手動bean定義-->
    <bean class="org.digdata.swustoj.util.ContextUtil"/>

使用示例

    /**
     * 判題佇列
     */
    private DefaultJudgeQueue defaultJudgeQueue = ContextUtil.getBean(DefaultJudgeQueue.class, "defaultJudgeQueue");