SpringBoot普通类中如何获取其他bean例如Service、Dao(转)
Posted on 2018-06-04 11:24 shenyixin 阅读(1096) 评论(0) 编辑 收藏 举报工具类
import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Component; /** * Author:Mr.X * Date:2017/11/8 10:00 * Description: */ @Component public class SpringContextUtils implements ApplicationContextAware { /** * 上下文对象实例 */ private static ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this.applicationContext = applicationContext; } /** * 获取applicationContext * * @return */ public static ApplicationContext getApplicationContext() { return applicationContext; } /** * 通过name获取 Bean. * * @param name * @return */ public static Object getBean(String name) { return getApplicationContext().getBean(name); } /** * 通过class获取Bean. * * @param clazz * @param <T> * @return */ public static <T> T getBean(Class<T> clazz) { return getApplicationContext().getBean(clazz); } /** * 通过name,以及Clazz返回指定的Bean * * @param name * @param clazz * @param <T> * @return */ public static <T> T getBean(String name, Class<T> clazz) { return getApplicationContext().getBean(name, clazz); } }
使用方法
public class ArticleFormConverter { private ArticleRepository articleRepository = (ArticleRepository) SpringContextUtils.getBean(ArticleRepository.class); public Article convert(ArticleForm articleForm) { // 更新 if (articleForm.getId() != null) { Article article = articleRepository.findOne(articleForm.getId()); BeanUtils.copyProperties(articleForm, article); article.setHtmlContent(Processor.process(article.getContent())); return article; } // 添加 Article article = new Article(); BeanUtils.copyProperties(articleForm, article); article.setHtmlContent(Processor.process(article.getContent())); // 添加时其他需要默认设置的属性值 article.setReadSize(0); article.setStatus(ArticleStatus.UP_SHELVES.getCode()); // 默认为上架 article.setCreateTime(new Date()); article.setUserId(1); // TODO 暂定为,应该从session中取 return article; } }
参考链接
第三十二章:如何获取SpringBoot项目的applicationContext对象:http://www.jianshu.com/p/3cd2d4e73eb7
手动获取spring的ApplicationContext和bean对象:http://www.cnblogs.com/yangzhilong/p/3949332.html
转自https://www.cnblogs.com/mrx520/p/7802831.html