Spring的CharacterEncodingFilter过滤字符编码

一、web.xml中定义filter，指定编码相关参数，设置需过滤的url

	<filter>
		<filter-name>encodingFilter</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>encodingFilter</filter-name>
		<url-pattern>/j_security_check</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.html</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.shtml</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>*.jsp</url-pattern>
	</filter-mapping>