新建獲取上下文工具類SpringContextUtil

package com.frank.lmsg.base.utils;

import org.springframework.context.ApplicationContext;

/**
 * Description: 獲取上下文工具類
 * Auth: Frank
 * Date: 2019-08-23
 * Time: 上午 10:44
 */
public class SpringContextUtil {
    private static ApplicationContext applicationContext;

    //獲取上下文
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    //設(shè)置上下文
    public static void setApplicationContext(ApplicationContext applicationContext) {
        SpringContextUtil.applicationContext = applicationContext;
    }

    //通過名字獲取上下文中的bean
    public static Object getBean(String name){
        return applicationContext.getBean(name);
    }

    //通過類型獲取上下文中的bean
    public static Object getBean(Class<?> requiredType){
        return applicationContext.getBean(requiredType);
    }


}

在Application里面初始化上下文

package com.frank.lmsg;

import com.frank.lmsg.base.utils.SpringContextUtil;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

@SpringBootApplication
@MapperScan("com.frank.lmsg.mybatis.mapper")
public class LmsgApplication {

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

}

獲取上下文

    ApplicationContext app = SpringContextUtil.getApplicationContext();