Controller中无法获取HttpServletRequest，报空指针

luckberry 2017-06-15 04:58:56

Spring的版本为4.3.不知道为何会获取不到HttpServletRequest和HttpServletResponse



<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns="http://java.sun.com/xml/ns/javaee"

	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

	version="3.0">

	<display-name>seller</display-name>

	<context-param>

		<param-name>contextConfigLocation</param-name>

		<param-value>classpath:seller-servlet.xml</param-value>

	</context-param>

	<filter>

		<filter-name>encodingFilter</filter-name>

		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

		<async-supported>true</async-supported>

		<init-param>

			<param-name>encoding</param-name>

			<param-value>UTF-8</param-value>

		</init-param>

	</filter>

	<filter-mapping>

		<filter-name>encodingFilter</filter-name>

		<url-pattern>/*</url-pattern>

	</filter-mapping>

	<listener>

		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

	</listener>

	<!-- 处理由JavaBeans,Introspector的使用而引起的缓冲泄露,建议配置此监听器 -->

	<listener>

		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

	</listener>

	<servlet>

		<servlet-name>seller</servlet-name>

		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

		<init-param>

			<param-name>contextConfigLocation</param-name>

			<param-value>classpath:spring-mvc.xml</param-value>

		</init-param>

		<load-on-startup>1</load-on-startup>

	</servlet>

	<servlet-mapping>

		<servlet-name>seller</servlet-name>

		<url-pattern>/</url-pattern>

	</servlet-mapping>



	<welcome-file-list>

		<welcome-file>/index.jsp</welcome-file>

	</welcome-file-list>

	<session-config>

		<session-timeout>60</session-timeout>

	</session-config>

</web-app>