public class TryFilesFilter extends Object implements Filter
This filter accepts the files
init-param as a list of space-separated
file URIs. The special token $path
represents the current request URL's
path (the portion after the context path).
Typical example of how this filter can be configured is the following:
<filter> <filter-name>try_files</filter-name> <filter-class>org.eclipse.jetty.fcgi.server.proxy.TryFilesFilter</filter-class> <init-param> <param-name>files</param-name> <param-value>maintenance.html $path index.php?p=$path</param-value> </init-param> </filter>For a request such as
/context/path/to/resource.ext
, this filter will
try to serve the /maintenance.html
file if it finds it; failing that,
it will try to serve the /path/to/resource.ext
file if it finds it;
failing that it will forward the request to index.php?p=/path/to/resource.ext
.
The last file URI specified in the list is therefore the "fallback" to which the request
is forwarded to in case no previous files can be found.
The files are resolved using ServletContext.getResource(String)
to make sure
that only files visible to the application are served.
FastCGIProxyServlet
Modifier and Type | Field and Description |
---|---|
static String |
FILES_INIT_PARAM |
Constructor and Description |
---|
TryFilesFilter() |
Modifier and Type | Method and Description |
---|---|
void |
destroy() |
void |
doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain) |
protected void |
fallback(HttpServletRequest request,
HttpServletResponse response,
FilterChain chain,
String fallback) |
void |
init(FilterConfig config) |
public static final String FILES_INIT_PARAM
public void init(FilterConfig config) throws ServletException
init
in interface Filter
ServletException
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
doFilter
in interface Filter
IOException
ServletException
protected void fallback(HttpServletRequest request, HttpServletResponse response, FilterChain chain, String fallback) throws IOException, ServletException
IOException
ServletException
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