package result;import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;/** * 編碼過濾 * @author  * */public class EncodingFilter implements Filter {	private String encoding = "GBK";	public void destroy() {	}	public void doFilter(ServletRequest request, ServletResponse response,			FilterChain chain) throws IOException, ServletException {		request.setCharacterEncoding(this.encoding);		chain.doFilter(request, response);	}	public void init(FilterConfig config) throws ServletException {		String encoding = config.getInitParameter("encoding");		if (encoding != null && encoding.trim().length() > 0) {			this.encoding = encoding;		}	}}