/**
* Returns a relative path to the filter path and context root from an HttpServletRequest - use
* this to resolve a Wicket request.
*
* @param request
* @return Path requested, minus query string, context path, and filterPath. Relative, no leading
* '/'.
*/
public String getRelativePath(HttpServletRequest request) {
String path = Strings.stripJSessionId(request.getRequestURI());
String contextPath = request.getContextPath();
path = path.substring(contextPath.length());
if (isServlet) {
String servletPath = request.getServletPath();
path = path.substring(servletPath.length());
}
if (path.length() > 0) {
path = path.substring(1);
}
// We should always be under the rootPath, except
// for the special case of someone landing on the
// home page without a trailing slash.
String filterPath = getFilterPath();
if (!path.startsWith(filterPath)) {
if (filterPath.equals(path + "/")) {
path += "/";
}
}
if (path.startsWith(filterPath)) {
path = path.substring(filterPath.length());
}
return path;
}
/**
* Try to determine as fast as possible if a redirect is necessary
*
* @param requestURI
* @param contextPath
* @return null, if no redirect is necessary. Else the redirect URL
*/
protected final String checkIfRedirectRequired(
final String requestURI, final String contextPath) {
// length without jsessionid (http://.../abc;jsessionid=...?param)
int uriLength = requestURI.indexOf(';');
if (uriLength == -1) {
uriLength = requestURI.length();
}
// request.getContextPath() + "/" + filterPath. But without any trailing "/".
int homePathLength = contextPath.length() + (filterPathLength > 0 ? 1 + filterPathLength : 0);
if (uriLength != homePathLength) {
// requestURI and homePath are different (in length)
// => continue with standard request processing. No redirect.
return null;
}
// Fail fast failed. Revert to "slow" but exact check
String uri = Strings.stripJSessionId(requestURI);
// home page without trailing slash URI
String homePageUri = contextPath + '/' + getFilterPath();
if (homePageUri.endsWith("/")) {
homePageUri = homePageUri.substring(0, homePageUri.length() - 1);
}
// If both are equal => redirect
if (uri.equals(homePageUri)) {
uri += "/";
return uri;
}
// no match => standard request processing; no redirect
return null;
}
