springboot 重新注入bean

  /**
 * @Author liyueming
 * @CreateTime 2021/4/2
 * @Description
 */
@Data
public class DataSourceMapBean {
    private HashMap hashMap;
}

方式一：属性注入
 //注入重新注入datasources  可以通过构造方法 也可以通过新增属性
                DefaultListableBeanFactory autowireCapableBeanFactory = (DefaultListableBeanFactory)springApplicationUtil.getApplicationContext().getAutowireCapableBeanFactory();
                autowireCapableBeanFactory.removeBeanDefinition("dataSource");
                //AbstractBeanDefinition dataSourceDefinition = BeanDefinitionBuilder.genericBeanDefinition(dataSources.getClass()).getBeanDefinition();
                BeanDefinitionBuilder beanDefinitionBuilder = 				BeanDefinitionBuilder.genericBeanDefinition(DataSourceMapBean.class);
                beanDefinitionBuilder.addPropertyValue("hashMap", dataSources.getHashMap());
                autowireCapableBeanFactory.registerBeanDefinition( "dataSource", beanDefinitionBuilder.getBeanDefinition());
方式二 构造方法注入
 //移除该bean（“sqlSessionTemplate”）
                autowireCapableBeanFactory.removeBeanDefinition("sqlSessionTemplate");
                beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(SqlSessionTemplate.class);
                //通过构造方法的引用注入该bean  把sqlsession工厂 注入到sqlsessionTemplate中
                beanDefinitionBuilder.addConstructorArgReference("SqlSessionFactory");
                autowireCapableBeanFactory.registerBeanDefinition("sqlSessionTemplate", beanDefinitionBuilder.getBeanDefinition());

@Component("springApplicationUtil")
public class SpringApplicationUtil extends ApplicationObjectSupport {
    /**
     * 通过bean的id获取bean对象
     * @param beanName
     * @return
     */
    public Object getBean(String beanName){
        return super.getApplicationContext().getBean(beanName);
    }

}