方式一:通过ApplicationContextAware 注入

package com.girltest.web.controller.common;import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.context.annotation.Configuration;/*** * 暴露spring context给非spring容器的对象使用 * * @author pengsong */@Configurationpublic class SpringContext implements ApplicationContextAware {    protected static ApplicationContext context;    @Override    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {        context = applicationContext;    }    public static ApplicationContext getContext() {        return context;    }    public static 
    
      T getBean(Class
     
       beanClass) {        return context.getBean(beanClass);    }    public static 
      
        T getBean(String name, Class
       
         beanClass) {        return context.getBean(name, beanClass);    }}
       
      
     
    

注意:一定要给类SpringContext or @ Service

方式二:通过WebApplicationContextUtils

获取 HTTP request:

/*** * 获取http请求上下文 * @return */public static HttpServletRequest getRequest() {    ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();    if (null == servletRequestAttributes) {        return null;    }    HttpServletRequest request = servletRequestAttributes.getRequest();    return request;}

/*** * 获取spring MVC请求上下文 * @return */public static SpringMVCContext getSpringMVCContext() {    HttpServletRequest request = getRequest();    HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();    SpringMVCContext springMVCContext = new SpringMVCContext();    WebApplicationContext webApp = WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());    springMVCContext.setRequest(request);    springMVCContext.setResponse(response);    springMVCContext.setWebApp(webApp);    return springMVCContext;}/*** * * @param request * @param beanName : 例如 userDao ,adminDao * @return */public static Object getBean(HttpServletRequest request, String beanName) {    WebApplicationContext webApp = WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());    return webApp.getBean(beanName);}

注意:如果上述方法不是在web 请求链条中执行,则无法获取request.