Spring Boot获取上下文环境方法

方法一：

import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.stereotype.Component;@Componentpublic class ApplicationContextHolder implements ApplicationContextAware{    // 上下文对象实例    private static ApplicationContext applicationContext;    @Override    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {        ApplicationContextHolder.applicationContext = applicationContext;    }    public static ApplicationContext getApplicationContext(){        return applicationContext;    }    public static <T> T getBean(Class<T> clazz){        return applicationContext.getBean(clazz);    }    @SuppressWarnings("unchecked")    public static <T> T getBean(String name){        return (T)applicationContext.getBean(name);    }    public static <T> T getBean(String name, Class<T> clazz){        return getApplicationContext().getBean(name, clazz);    }}

方法二：

import org.springframework.context.ApplicationContext;public class SpringContextUtil {    private static ApplicationContext applicationContext;    public static ApplicationContext getApplicationContext(){        return applicationContext;    }    public static void setApplicationContext(ApplicationContext applicationContext){        SpringContextUtil.applicationContext = applicationContext;    }    public static <T> T getBean(String name){        return (T)applicationContext.getBean(name);    }    public static <T> T getBean(Class<T> clazz){        return applicationContext.getBean(clazz);    }}

入口main函数：

public static void main(String[] args) {        ApplicationContext context = SpringApplication.run(Application.class, args);        SpringContextUtil.setApplicationContext(context);    }