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1 package com.tonbeller.wcf.charset;
2
3 import java.io.IOException  ;
4 import java.io.UnsupportedEncodingException ;
5 import java.net.URLEncoder ;
6
7 import javax.servlet.Filter ;
8 import javax.servlet.FilterChain ;
9 import javax.servlet.FilterConfig ;
10 import javax.servlet.ServletException ;
11 import javax.servlet.ServletRequest ;
12 import javax.servlet.ServletResponse ;
13 import javax.servlet.http.HttpServletResponse ;
14
15 import org.apache.log4j.Logger;
16
17 import com.tonbeller.tbutils.res.Resources;
18
19
25 public class CharsetFilter implements Filter {
26
27 private static final Logger logger = Logger.getLogger(CharsetFilter.class);
28 private static final String ISO88591 = "iso-8859-1";
29 private static final String UTF8 = "utf-8";
30
31 private static String encoding = ISO88591;
32 private String contentType = null;
33
34 public void init(FilterConfig fc) throws ServletException {
35 Resources res = Resources.instance();
36 encoding = res.getOptionalString("tbeller.charset", null);
37 if (encoding == null)
38 encoding = fc.getInitParameter("encoding");
39 if (encoding == null)
40 encoding = UTF8;
41 logger.info("setting encoding to " + encoding);
42
43 contentType = fc.getInitParameter("contentType");
44 }
45
46 public void destroy() {
47 logger.info("setting encoding back to ISO-8859-1");
48 encoding = ISO88591;
49 }
50
51
55 public static String getEncoding() {
56 return encoding;
57 }
58
59
62 public static String urlEncode(String s) {
63 try {
64 return URLEncoder.encode(s, encoding);
65 } catch (UnsupportedEncodingException e) {
66 logger.error(null, e);
67 return s;
68 }
69 }
70
71 public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
72 throws IOException , ServletException {
73 if (req.getCharacterEncoding() == null)
75 req.setCharacterEncoding(encoding);
76 res = new CharsetResponse((HttpServletResponse ) res, contentType, encoding);
77 chain.doFilter(req, res);
78 }
79
80 }
81 |
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