在web.xml中新增

<!-- 解決中文亂碼 -->
  <filter>
  <filter-name>Spring character encoding filter</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>
 </filter>
 <filter-mapping>
  <filter-name>Spring character encoding filter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>