DWZフォーム提出バックグラウンド中国語文字化けし

DWZに触れたばかりなので、まだ全然使い慣れていないので、何気なくバックグラウンドに文字化けがあることに気づきました
文字化けし­åˆå‘¢   
検索してみるとネット上で似たような問題がありました
でも最終的な答えはない
いっそ符号化フィルタを加える機能を完成させる.

web.xml
<!-- -->
	<filter>
		<filter-name>EncodingFilter</filter-name>
		<filter-class>
			com.ymkj.dcode.util.SetCharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>ignore</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>EncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

SetCharacterEncodingFilter.java

package com.ymkj.dcode.util;

/*
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

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;

/**
 * <p>
 * Example filter that sets the character encoding to be used in parsing the
 * incoming request, either unconditionally or only if the client did not
 * specify a character encoding. Configuration of this filter is based on the
 * following initialization parameters:
 * </p>
 * <ul>
 * <li><strong>encoding</strong> - The character encoding to be configured for
 * this request, either conditionally or unconditionally based on the
 * <code>ignore</code> initialization parameter. This parameter is required,
 * so there is no default.</li>
 * <li><strong>ignore</strong> - If set to "true", any character encoding
 * specified by the client is ignored, and the value returned by the
 * <code>selectEncoding( )</code> method is set. If set to "false,
 * <code>selectEncoding( )</code> is called <strong>only</strong> if the
 * client has not already specified an encoding. By default, this parameter is
 * set to "true".</li>
 * </ul>
 * 
 * <p>
 * Although this filter can be used unchanged, it is also easy to subclass it
 * and make the <code>selectEncoding( )</code> method more intelligent about
 * what encoding to choose, based on characteristics of the incoming request
 * (such as the values of the <code>Accept-Language
 * </code> and
 * <code>User-Agent</code> headers, or a value stashed in the current user's
 * session.
 * </p>
 * 
 * @author Craig McClanahan
 * @version $Revision: 1.1 $ $Date: 2008/02/19 07:57:23 $
 */
public class SetCharacterEncodingFilter implements Filter {

	// ------------------------------------------------- Instance Variables

	/**
	 * The default character encoding to set for requests that pass through this
	 * filter.
	 */
	protected String encoding = null;

	/**
	 * The filter configuration object we are associated with. If this value is
	 * null, this filter instance is not currently configured.
	 */
	protected FilterConfig filterConfig = null;

	/**
	 * Should a character encoding specified by the client be ignored?
	 */
	protected boolean ignore = true;

	// ----------------------------------------------------- Public Methods

	/**
	 * Take this filter out of service.
	 */
	public void destroy() {
		this.encoding = null;
		this.filterConfig = null;
	}

	/**
	 * Select and set (if specified) the character encoding to be used to
	 * interpret request parameters for this request.
	 * 
	 * @param request
	 *            The servlet request we are processing
	 * @param result
	 *            The servlet response we are creating
	 * @param chain
	 *            The filter chain we are processing
	 * 
	 * @exception IOException
	 *                if an input/output error occurs
	 * @exception ServletException
	 *                if a servlet error occurs
	 */
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		// Conditionally select and set the character encoding to be used
		if (ignore || (request.getCharacterEncoding() == null)) {
			String encoding = selectEncoding(request);
			if (encoding != null)
				request.setCharacterEncoding(encoding);
		}

		// Pass control on to the next filter
		chain.doFilter(request, response);
	}

	/**
	 * Place this filter into service.
	 * 
	 * @param filterConfig
	 *            The filter configuration object
	 */
	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
		this.encoding = filterConfig.getInitParameter("encoding");
		String value = filterConfig.getInitParameter("ignore");
		if (value == null)
			this.ignore = true;
		else if (value.equalsIgnoreCase("true"))
			this.ignore = true;
		else if (value.equalsIgnoreCase("yes"))
			this.ignore = true;
		else
			this.ignore = false;
	}

	// -------------------------------------------------- Protected Methods

	/**
	 * Select an appropriate character encoding to be used, based on the
	 * characteristics of the current request and/or filter initialization
	 * parameters. If no character encoding should be set, return
	 * <code>null</code>.
	 * <p>
	 * The default implementation unconditionally returns the value configured
	 * by the <strong>encoding</strong> initialization parameter for this
	 * filter.
	 * 
	 * @param request
	 *            The servlet request we are processing
	 */
	protected String selectEncoding(ServletRequest request) {
		return (this.encoding);
	}
}