com.baomidou.framework.spring.SpringContextHolder.java Source code

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Here is the source code for com.baomidou.framework.spring.SpringContextHolder.java

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/**
 * Copyright (c) 2011-2014, hubin (jobob@qq.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.baomidou.framework.spring;

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

import com.baomidou.framework.exception.SpringWindException;

/**
 * <p>
 * Spring  ?Spring?
 * </p>
 * <p>
 *  ? servlet-context.xml 
 *  <br>
 *  <!-- ?ApplicationContext -->
 *   <bean id="springContextHolder" class="com.baomidou.framework.spring.SpringContextHolder" />
 * </p>
 * @author hubin
 * @Date 2016-01-15
 */
public class SpringContextHolder implements ApplicationContextAware {

    private static ApplicationContext context;

    public static ApplicationContext getApplicationContext() {
        checkApplicationContext();
        return context;
    }

    public static <T> T getBean(Class<T> clazz) {
        checkApplicationContext();
        return context.getBean(clazz);
    }

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

    private static void checkApplicationContext() {
        if (context == null) {
            throw new SpringWindException(
                    "applicaitonContext,applicationContext.xmlSpringContextHolder");
        }
    }

}