spring工具类

Posted 2023-03-20 popopopopo

spring工具类获取bean编写

package com.cloudiip.security.utils;


import org.springframework.stereotype.Component;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationContext;
import org.springframework.beans.BeansException;
@Component
public class SpringContextUtils implements ApplicationContextAware

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException 
        SpringContextUtils.applicationContext=applicationContext;

    
    public static ApplicationContext getApplicationContext() 
        return applicationContext;
    
    @SuppressWarnings("unchecked")
    public static <T> T getBean(Class name) throws BeansException 
        if (applicationContext == null)
            return null;
        
        return (T)applicationContext.getBean(name);
    

调用方式：

PermissionService permissionService=SpringContextUtils.getBean(PermissionService.class);