|
1 package info.magnolia.cms.filters;
2
3 import info.magnolia.cms.beans.config.FilterManager;
4
5 import java.io.IOException  ;
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.HttpServletRequest ;
14
15 import org.slf4j.Logger;
16 import org.slf4j.LoggerFactory;
17
18
19
24 public class MagnoliaManagedFilter implements Filter {
25
26
29 private static Logger log = LoggerFactory.getLogger(ContentTypeFilter.class);
30
31
34 private FilterConfig filterConfig;
35
36
39 private FilterManager filterManager = FilterManager.getInstance();
40
41
44 public void destroy() {
45 for (int j = 0; j < filterManager.getFilters().length; j++) {
46 Filter filter = filterManager.getFilters()[j];
47 filter.destroy();
48
49 }
50 }
51
52 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException ,
53 ServletException {
54 FilterChain fullchain = new CustomFilterChain(chain, filterManager.getFilters());
55
56 if (log.isDebugEnabled()) {
57 String pathInfo = ((HttpServletRequest ) request).getPathInfo();
58 String requestURI = ((HttpServletRequest ) request).getRequestURI();
59
60 if (pathInfo == null || !requestURI.startsWith("/.")) {
61 log.debug("handling: {} path info: {}", requestURI, pathInfo);
62 }
63 }
64
65 fullchain.doFilter(request, response);
66 }
67
68 public void init(FilterConfig filterConfig) throws ServletException {
69 this.filterConfig = filterConfig;
70 filterManager.initFilters(filterConfig);
71 }
72
73 public class CustomFilterChain implements FilterChain {
74
75 private Filter [] filters;
76
77 private int position;
78
79 private FilterChain originalChain;
80
81 public CustomFilterChain(FilterChain originalChain, Filter [] filters) {
82 this.filters = filters;
83 this.originalChain = originalChain;
84 }
85
86 public void doFilter(ServletRequest request, ServletResponse response) throws IOException , ServletException {
87 if (position == filters.length) {
88 originalChain.doFilter(request, response);
89 }
90 else {
91 position++;
92 filters[position - 1].doFilter(request, response, this);
93 }
94 }
95
96 public void reset() {
97 position = 0;
98 }
99 }
100
101 }
102 |
Popular Tags |
Java API By Example, From Geeks To Geeks.