SpringMVC 使用aop 调用 HttpServletRequest

矫情吗；* 2022-05-25 14:23 159阅读 0赞

请看org.springframework.web.context.request.ServletRequestAttributes源代码

方式一：

ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();  
    
              HttpServletRequest request =attributes.getRequest();

方式二：自己封装工具类

package com.user.sessionFilter;  
      
    import java.util.Arrays;  
    import java.util.Collection;  
    import java.util.Locale;  
    import javax.servlet.ServletContext;  
    import javax.servlet.http.HttpServletRequest;  
    import javax.servlet.http.HttpSession;  
    import javax.sql.DataSource;  
    import org.aspectj.lang.annotation.Aspect;
    import org.slf4j.Logger;  
    import org.slf4j.LoggerFactory;  
    import org.springframework.beans.factory.NoSuchBeanDefinitionException;  
    import org.springframework.context.ApplicationContext;  
    import org.springframework.context.ApplicationEventPublisher;  
    import org.springframework.context.MessageSource;  
    import org.springframework.core.convert.ConversionService;  
    import org.springframework.core.io.ResourceLoader;  
    import org.springframework.core.io.support.ResourcePatternResolver;  
    import org.springframework.stereotype.Component;
    import org.springframework.ui.context.Theme;  
    import org.springframework.util.ClassUtils;  
    import org.springframework.web.context.request.RequestContextHolder;  
    import org.springframework.web.context.request.ServletRequestAttributes;  
    import org.springframework.web.context.support.WebApplicationContextUtils;  
    import org.springframework.web.servlet.LocaleResolver;  
    import org.springframework.web.servlet.ThemeResolver;  
    import org.springframework.web.servlet.support.RequestContextUtils;  
    /**
     *  
     *Project:my
     *Description: 
     *@author Krystal
     * 2018年5月16日上午10:20:33
     */
    @Aspect
    @Component
    public final class WebContextHolder {  
          
        private static final Logger LOGGER = LoggerFactory.getLogger(WebContextHolder.class);  
          
        private static final WebContextHolder INSTANCE = new WebContextHolder();  
          
        public WebContextHolder get() {  
            return INSTANCE;  
        }  
      
        private WebContextHolder() {  
            super();  
        }  
          
        // --------------------------------------------------------------------------------------------------------------  
          
        public HttpServletRequest getRequest() {  
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();  
            return attributes.getRequest();  
        }  
          
        public HttpSession getSession() {  
            return getSession(true);  
        }  
          
        public HttpSession getSession(boolean create) {  
            return getRequest().getSession(create);  
        }  
          
        public String getSessionId() {  
            return getSession().getId();  
        }  
          
        public ServletContext getServletContext() {  
            return getSession().getServletContext();    // servlet2.3  
        }  
          
        public Locale getLocale() {  
            return RequestContextUtils.getLocale(getRequest());  
        }  
          
        public Theme getTheme() {  
            return RequestContextUtils.getTheme(getRequest());  
        }  
      
        public ApplicationContext getApplicationContext() {  
            return WebApplicationContextUtils.getWebApplicationContext(getServletContext());  
        }  
          
        public ApplicationEventPublisher getApplicationEventPublisher() {  
            return (ApplicationEventPublisher) getApplicationContext();  
        }  
          
        public LocaleResolver getLocaleResolver() {  
            return RequestContextUtils.getLocaleResolver(getRequest());  
        }  
          
        public ThemeResolver getThemeResolver() {  
            return RequestContextUtils.getThemeResolver(getRequest());  
        }  
          
        public ResourceLoader getResourceLoader() {  
            return (ResourceLoader) getApplicationContext();  
        }  
          
        public ResourcePatternResolver getResourcePatternResolver() {  
            return (ResourcePatternResolver) getApplicationContext();  
        }  
      
        public MessageSource getMessageSource() {  
            return (MessageSource) getApplicationContext();  
        }  
          
        public ConversionService getConversionService() {  
            return getBeanFromApplicationContext(ConversionService.class);  
        }  
      
        public DataSource getDataSource() {  
            return getBeanFromApplicationContext(DataSource.class);  
        }  
      
        public Collection<String> getActiveProfiles() {  
            return Arrays.asList(getApplicationContext().getEnvironment().getActiveProfiles());  
        }  
          
        public ClassLoader getBeanClassLoader() {  
            return ClassUtils.getDefaultClassLoader();  
        }  
      
        private <T> T getBeanFromApplicationContext(Class<T> requiredType) {  
            try {  
                return getApplicationContext().getBean(requiredType);  
            } catch (NoSuchBeanDefinitionException e) {  
                LOGGER.warn(e.getMessage());  
                return null;  
            }  
        }  
      
    
    }

springMVC 配置   WebContextHolder在com.user 路径下

<context:component-scan base-package="com.user" >
    </context:component-scan>
    <aop:aspectj-autoproxy proxy-target-class="true">  
    
    </aop:aspectj-autoproxy>

3. 调用 HttpServletRequest request = webContextHolder.getRequest();  之后就可以直接使用。