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1
12 package org.openbravo.utils;
13
14 import java.io.IOException  ;
15 import java.util.ArrayList ;
16 import java.util.Enumeration ;
17 import javax.servlet.Filter ;
18 import javax.servlet.FilterChain ;
19 import javax.servlet.FilterConfig ;
20 import javax.servlet.ServletException ;
21 import javax.servlet.ServletRequest ;
22 import javax.servlet.ServletResponse ;
23 import javax.servlet.http.HttpServletResponse ;
24
25 public class CacheFilter implements Filter {
26 private String [][] replyHeaders = {{}};
27
28 public void init(FilterConfig config) {
29 Enumeration names = config.getInitParameterNames();
30 ArrayList tmp = new ArrayList ();
31 while( names.hasMoreElements() )
32 {
33 String name = (String ) names.nextElement();
34 String value = config.getInitParameter(name);
35 String [] pair = {name, value};
36 tmp.add(pair);
37 }
38 replyHeaders = new String [tmp.size()][2];
39 tmp.toArray(replyHeaders);
40 }
41
42 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException , ServletException {
43 HttpServletResponse httpResponse = (HttpServletResponse ) response;
44 for(int n = 0; n < replyHeaders.length; n ++)
45 {
46 String name = replyHeaders[n][0];
47 String value = replyHeaders[n][1];
48 httpResponse.addHeader(name, value);
49 }
50 chain.doFilter(request, response);
51 }
52
53 public void destroy() {
54 }
55
56 }
57 |
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