求jsp的编码过虑文件

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  1.   

    public class CharacterEncodingFilter implements Filter {
        protected String encoding = null;
        protected FilterConfig filterConfig = null;    public void init(FilterConfig filterConfig) throws ServletException {
            this.filterConfig = filterConfig;
            this.encoding = filterConfig.getInitParameter("encoding");
        }    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
            if (encoding != null) {
                request.setCharacterEncoding(encoding);
                response.setContentType("text/html; charset="+encoding);
            }
            chain.doFilter(request, response);
        }    public void destroy() {
            this.encoding = null;
            this.filterConfig = null;
        }}
     <filter>
            <filter-name>CharacterEncodingFilter</filter-name>
            <filter-class>com.tools.CharacterEncodingFilter</filter-class>
            <init-param>
                <param-name>encoding</param-name>
                <param-value>utf-8</param-value>
            </init-param>
        </filter>