displaytag分页中文处理

displaytag参考：
http://blog.sina.com.cn/s/blog_6b184a840100lavn.html
http://www.knowsky.com/1045905.html

直接修改class方法参考：
http://jingyan.baidu.com/article/4d58d541017fd39dd4e9c005.html

网上处理方案大部分都是改tomcat

个人还是喜欢改源码的方式：
更改DefaultRequestHelper
更改后：

/** * Licensed under the Artistic License; you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * *      http://displaytag.sourceforge.net/license.html * * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */package org.displaytag.util;import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import java.util.Enumeration;import java.util.HashMap;import java.util.Map;import java.util.regex.Matcher;import java.util.regex.Pattern;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.lang.ObjectUtils;import org.apache.commons.lang.StringUtils;import org.apache.commons.lang.UnhandledException;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.displaytag.Messages;/** * Default RequestHelper implementation. * @author Fabrizio Giustina * @version $Revision: 1104 $ ($Author: fgiust $) * @see org.displaytag.util.Href * @see org.displaytag.util.RequestHelper */public class DefaultRequestHelper implements RequestHelper{    /**     * logger.     */    private static Log log = LogFactory.getLog(DefaultRequestHelper.class);    /**     * original HttpServletRequest.     */    private HttpServletRequest request;    /**     * original HttpServletResponse.     */    private HttpServletResponse response;    /**     * Construct a new RequestHelper for the given request.     * @param servletRequest HttpServletRequest needed to generate the base href     * @param servletResponse HttpServletResponse needed to encode generated urls     */    public DefaultRequestHelper(HttpServletRequest servletRequest, HttpServletResponse servletResponse)    {        this.request = servletRequest;        this.response = servletResponse;    }    /**     * @see org.displaytag.util.RequestHelper#getHref()     */    public Href getHref()    {        String requestURI = this.request.getRequestURI();        // call encodeURL to preserve session id when cookies are disabled        Href href = new DefaultHref(this.response.encodeURL(requestURI));        href.setParameterMap(getParameterMap());        return href;    }    /**     * @see org.displaytag.util.RequestHelper#getParameter(java.lang.String)     */    public String getParameter(String key)    {        // actually simply return the parameter, this behaviour could be changed        return this.request.getParameter(key);    }    /**     * @see org.displaytag.util.RequestHelper#getIntParameter(java.lang.String)     */    public Integer getIntParameter(String key)    {        String value = this.request.getParameter(key);        if (value != null)        {            try            {                return new Integer(value);            }            catch (NumberFormatException e)            {                // It's ok to ignore, simply return null                log.debug(Messages.getString("RequestHelper.invalidparameter", //$NON-NLS-1$                    new Object[]{key, value}));            }        }        return null;    }    /**     * @see org.displaytag.util.RequestHelper#getParameterMap()     */  /*  public Map getParameterMap()    {        Map map = new HashMap();        // get the parameters names        Enumeration parametersName = this.request.getParameterNames();        while (parametersName.hasMoreElements())        {            // ... get the value            String paramName = (String) parametersName.nextElement();            request.getParameter(paramName);            // put key/value in the map            String[] originalValues = (String[]) ObjectUtils.defaultIfNull(                this.request.getParameterValues(paramName),                new String[0]);            String[] values = new String[originalValues.length];            for (int i = 0; i < values.length; i++)            {                try                {                    values[i] = URLEncoder.encode(StringUtils.defaultString(originalValues[i]), StringUtils                        .defaultString(response.getCharacterEncoding(), "UTF8")); //$NON-NLS-1$                }                catch (UnsupportedEncodingException e)                {                    throw new UnhandledException(e);                }            }            map.put(paramName, values);        }        // return the Map        return map;    }*/    //解决中文支持问题    public Map getParameterMap() {        Map map = new HashMap();         // get the parameters names         Enumeration parametersName = this.request.getParameterNames();         while (parametersName.hasMoreElements()) {             // ... get the value             String paramName = (String) parametersName.nextElement();             request.getParameter(paramName);             // put key/value in the map             String pName="";             String[] originalValues = (String[]) ObjectUtils.defaultIfNull( this.request.getParameterValues(paramName), new String[0]);             try {                 if(originalValues[0]!=null){                     if(isContainChinese(originalValues[0])){                         pName=originalValues[0];                     }else{                         pName=new String(originalValues[0].getBytes("ISO-8859-1"),"UTF-8");                     }                 }             } catch (UnsupportedEncodingException e1) {                 // TODO Auto-generated catch block                 e1.printStackTrace();             }             try {                 pName = URLEncoder.encode(StringUtils.defaultString(pName), StringUtils .defaultString(response.getCharacterEncoding(), "UTF8")); //$NON-NLS-1$             }catch (UnsupportedEncodingException e) {                 throw new UnhandledException(e);             }             map.put(paramName, pName);         }         //return the Map         return map;     }    public boolean isContainChinese(String str) {         Pattern p = Pattern.compile("[\u4e00-\u9fa5]");         Matcher m = p.matcher(str);         if (m.find()) {             return true;         }         return false;     }}

完美解决。