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//Õâ¸öfilterÊÇΪÁË×ö±àÂëת»»£¬Ö»Òª·ÃÎÊ.jspÍøÒ³¶¼Òª¹¦¹ýÕâ¸öfilter
/**ÀàÃû£ºfilter.Encoding
*×÷Ó㺶Ժǫ́Ð޸ĽøÐÐȨÏÞÑéÖ¤ºÍ·ÀÖ¹Õ¾ÍâÌá½»
*×÷Õߣºluoshao
*ÈÕÆÚ£º2008-1-9
*/
package filter;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Encoding implements Filter {
       /** Request.java
      * ¶Ô HttpServletRequestWrapper ½øÐÐÀ©³ä, ²»Ó°ÏìÔ­À´µÄ¹¦Äܲ¢ÄÜÌṩËùÓÐµÄ HttpServletRequest
      * ½Ó¿ÚÖеŦÄÜ. Ëü¿ÉÒÔͳһµÄ¶Ô Tomcat ĬÈÏÉèÖÃϵÄÖÐÎÄÎÊÌâ½øÐнâ¾ö¶øÖ»ÐèÒªÓÃÐ嵀 Request ¶ÔÏóÌæ»»Ò³ÃæÖеÄ
      * request ¶ÔÏó¼´¿É.
      */
    class Request extends HttpServletRequestWrapper
    {
        public Request(HttpServletRequest request) {
            super(request);
        }
        /**
         * ת»»ÓÉ±íµ¥¶ÁÈ¡µÄÊý¾ÝµÄÄÚÂë.
         * ´Ó ISO ×Ö·ûתµ½ GBK.
         */
        public String toChi(String input) {
            try {
              byte[] bytes = input.getBytes("ISO8859-1");
              return new String(bytes, "GBK");
            }
           


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