web.xml中配置乱码过滤器

<!-- 乱码过滤器 -->
	<filter>
		<filter-name>SetCharacterEncoding</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>SetCharacterEncoding</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>INCLUDE</dispatcher>
	</filter-mapping>
	<filter-mapping>
		<filter-name>SetCharacterEncoding</filter-name>
		<url-pattern>*.jsp</url-pattern>
	</filter-mapping>