springmvc的乱码问题

1，自定义Filter过滤器：

  public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        servletRequest.setCharacterEncoding("utf-8");
        servletResponse.setCharacterEncoding("utf-8");
        filterChain.doFilter(servletRequest,servletResponse);

    }

<filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>com.filter.EncodingFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>-->

2，使用springmvc提供的过滤器
直接在web.xml中配置

<filter>
       <filter-name>encoding</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>encoding</filter-name>
       <url-pattern>/*</url-pattern>
   </filter-mapping>

注意点：url-pattern中匹配所有的请求是：/ （不包括jsp）
url-pattern中匹配所有的请求是：/* (包括jsp)