1 /*
2 * Licensed under the Apache License, Version 2.0 (the "License");
3 * you may not use this file except in compliance with the License.
4 * You may obtain a copy of the License at
5 *
6 * http://www.apache.org/licenses/LICENSE-2.0
7 *
8 * Unless required by applicable law or agreed to in writing, software
9 * distributed under the License is distributed on an "AS IS" BASIS,
10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 * See the License for the specific language governing permissions and
12 * limitations under the License.
13 *
14 */
15 package org.esigate.servlet.impl;
16
17 import javax.servlet.http.HttpServletRequest;
18
19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
21
22 /**
23 * Utility class to work with Servlet request urls.
24 *
25 * @author Nicolas Richeton
26 *
27 */
28 public final class RequestUrl {
29 public static final Logger LOG = LoggerFactory.getLogger(RequestUrl.class);
30
31 private RequestUrl() {
32
33 }
34
35 /**
36 * Get the relative url to the current servlet.
37 * <p>
38 * Uses the request URI and removes : the context path, the servlet path if used.
39 *
40 * @param request
41 * The current HTTP request
42 * @param servlet
43 * true to remove the servlet path
44 * @return the url, relative to the servlet mapping.
45 */
46 public static String getRelativeUrl(HttpServletRequest request, boolean servlet) {
47 // Raw request url
48 String requestURI = request.getRequestURI();
49 // Application (war) context path
50 String contextPath = request.getContextPath();
51 // Servlet mapping
52 String servletPath = request.getServletPath();
53
54 String relativeUrl = requestURI;
55
56 // Remove application context path
57 if (contextPath != null && relativeUrl.startsWith(contextPath)) {
58 relativeUrl = relativeUrl.substring(contextPath.length());
59 }
60
61 // Remove servlet mapping path
62 if (servlet && servletPath != null && relativeUrl.startsWith(servletPath)) {
63 relativeUrl = relativeUrl.substring(servletPath.length());
64 }
65
66 if (LOG.isDebugEnabled()) {
67 LOG.debug("requestURI: {}, contextPath: {}, servletPath: {}, relativeUrl: {}, ", requestURI, contextPath,
68 servletPath, relativeUrl);
69 }
70
71 return relativeUrl;
72 }
73 }