在web.xml中添加字符集过滤器:
 <filter>
		  <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
		  <url-pattern>/*</url-pattern>
	</filter-mapping>
原文:http://www.cnblogs.com/cfmshine/p/5197189.html