Spring Boot 获取上下文

今天药忘吃喽~ 2024-04-17 05:40 72阅读 0赞

##### 新建获取上下文工具类SpringContextUtil #####

package com.frank.lmsg.base.utils;
    
    import org.springframework.context.ApplicationContext;
    
    /**
     * Description: 获取上下文工具类
     * Auth: Frank
     * Date: 2019-08-23
     * Time: 上午 10:44
     */
    public class SpringContextUtil {
        private static ApplicationContext applicationContext;
    
        //获取上下文
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }
    
        //设置上下文
        public static void setApplicationContext(ApplicationContext applicationContext) {
            SpringContextUtil.applicationContext = applicationContext;
        }
    
        //通过名字获取上下文中的bean
        public static Object getBean(String name){
            return applicationContext.getBean(name);
        }
    
        //通过类型获取上下文中的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);
    	}
    
    }

##### 获取上下文 #####

ApplicationContext app = SpringContextUtil.getApplicationContext();