String latin = 
;String gbk = new String(latin.getBytes("iso-8859-1"),"gbk");榪欎釜鏂規(guī)硶榪囧幓鎴戜篃姣旇緝甯哥敤錛岀殑紜湁鏁堬紝浣嗗緢绱禈鑰訛紝涓濇娌℃湁妯″紡涔嬬編錛屾湁娌℃湁鏇翠紭闆呯殑鏂規(guī)硶鍛紵濡傛灉浣犲拰鎴戜竴鏍鋒湁鐤戣檻鐨勮瘽錛屽彲浠ヨ冭檻浣跨敤FilterServlet錛?br>
1import java.io.*;
2import javax.servlet.*;
3import javax.servlet.http.*;
4
5import org.apache.log4j.*;
6
7public class CharsetFilter
8
extends HttpServlet implements Filter{
9
private static Logger logger = Logger.getLogger("Filter servlet");
10
11 public void init(FilterConfig filterConfig)
12
throws ServletException{
13
}
14
15 public void doFilter(ServletRequest request,ServletResponse response,
16 FilterChain filterChain){
17 if(request != null){
18 String charset = request.getCharacterEncoding();
19 if(charset == null || !charset.equalsIgnoreCase("gbk"))
20 try{
21 request.setCharacterEncoding("GBK");
22 }
23 catch(UnsupportedEncodingException ex){
24 logger.warn(ex.getMessage());
25 }
26 }
27 try{
28 filterChain.doFilter(request,response); // 閫掍氦璐ｄ換閾句笅涓鐜?/span>
29 }
30 catch(Exception ex){
31 logger.error(ex.getMessage());
32 }
33 }
34
35 public void destroy(){
36 }
37
}
38
import java.io.*;2
import javax.servlet.*;3
import javax.servlet.http.*;4
5
import org.apache.log4j.*;6
7
public class CharsetFilter8
extends HttpServlet implements Filter{9
private static Logger logger = Logger.getLogger("Filter servlet");10
11
public void init(FilterConfig filterConfig)12
throws ServletException{13
}14
15
public void doFilter(ServletRequest request,ServletResponse response,16
FilterChain filterChain){17
if(request != null){18
String charset = request.getCharacterEncoding();19
if(charset == null || !charset.equalsIgnoreCase("gbk"))20
try{21
request.setCharacterEncoding("GBK");22
}23
catch(UnsupportedEncodingException ex){24
logger.warn(ex.getMessage());25
}26
}27
try{28
filterChain.doFilter(request,response); // 閫掍氦璐ｄ換閾句笅涓鐜?/span>29
}30
catch(Exception ex){31
logger.error(ex.getMessage());32
}33
}34
35
public void destroy(){36
}37
}38
FilterServlet鍐呴儴搴旇浣跨敤璐ｄ換閾撅紙Chain of Responsibility錛夊疄鐜幫紝鍦ㄨ繖閲屾垜浠妸瀵瑰瓧絎︿覆鐨勮漿鐮佸仛涓鴻矗浠婚摼涓殑涓鐜紝浠庝笂涓鐜嬁鍒皉equest錛屽鐞嗗悗浜ょ粰閾劇殑涓嬩竴鐜傚彟澶栭渶瑕佸湪web.xml閲屽仛浜涢厤緗細
<filter> <filter-name>charsetfilter</filter-name> <filter-class>pqp.servlet.CharsetFilter</filter-class></filter><filter-mapping> <filter-name>charsetfilter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>REQUEST</dispatcher></filter-mapping>鍏朵腑“REQUEST”鎸囧畾浜唂ilter鎷︽埅鐨勭被鍨嬶紝鏈塕EQUEST銆丗ORWARD銆丒RROR鍜孖NCLUDE錛屽彲緇勫悎閫夋嫨錛屼竴鑸塕EQUEST銆傚叏閮ㄨ緗ソ鍚庨噸鏂版墦鍖呫侀儴緗詫紝榪欐牱Servlet灝卞彲浠ヨ嚜鍔ㄦ妸鎵鏈夌殑request杞崲涓篏BK鐨勫瓧絎﹂泦浜嗭紝鏄笉鏄緢鏂逛究錛?img height=19 src="http://www.aygfsteel.com/Emoticons/teeth_smile.gif" width=19 border=0>浣嗗湪榪欓噷鍔犱簡filter鍚庡鎬ц兘鏂歸潰鐨勫獎鍝嶆湭鐭ワ紝澶у鍙互璁ㄨ涓涓嬨?
]]>