Java中SpringContext工具类

ゞ浴缸里的玫瑰 2022-11-26 08:51 108阅读 0赞

Java中SpringContext工具类代码如下：

import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    import org.springframework.stereotype.Component;
    import org.springframework.web.context.request.RequestContextHolder;
    import org.springframework.web.context.request.ServletRequestAttributes;
    
    import javax.servlet.http.HttpServletRequest;
    
    /** * SpringContext工具类 * * @Author Lizhou */
    @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 { 
            SpringContextUtils.applicationContext = applicationContext;
        }
    
        /** * 获取applicationContext * * @return */
        public static ApplicationContext getApplicationContext() { 
            return applicationContext;
        }
    
        /** * 获取HttpServletRequest */
        public static HttpServletRequest getHttpServletRequest() { 
            return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        }
    
        public static String getDomain() { 
            HttpServletRequest request = getHttpServletRequest();
            StringBuffer url = request.getRequestURL();
            return url.delete(url.length() - request.getRequestURI().length(), url.length()).toString();
        }
    
        public static String getOrigin() { 
            HttpServletRequest request = getHttpServletRequest();
            return request.getHeader("Origin");
        }
    
        /** * 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);
        }
    }

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