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1
24 package org.riotfamily.common.web.controller;
25
26 import java.io.IOException  ;
27 import java.io.UnsupportedEncodingException ;
28 import java.net.URLEncoder ;
29 import java.util.Enumeration ;
30
31 import javax.servlet.http.HttpServletRequest ;
32 import javax.servlet.http.HttpServletResponse ;
33
34 import org.riotfamily.common.web.util.ServletUtils;
35 import org.springframework.web.servlet.ModelAndView;
36 import org.springframework.web.servlet.mvc.Controller;
37
38
41 public class RedirectController implements Controller {
42
43 private boolean http10Compatible = true;
44
45 private boolean addContextPath = false;
46
47 private boolean addServletMapping = false;
48
49 private String encodingScheme = "UTF-8";
50
51 private String url;
52
53 public RedirectController(String url) {
54 this.url = url;
55 }
56
57 public RedirectController(String url, boolean addContextPath,
58 boolean addServletMapping) {
59
60 this.url = url;
61 this.addContextPath = addContextPath;
62 this.addServletMapping = addServletMapping;
63 }
64
65 protected RedirectController() {
66 }
67
68
79 public void setHttp10Compatible(boolean http10Compatible) {
80 this.http10Compatible = http10Compatible;
81 }
82
83
84 public void setAddContextPath(boolean contextRelative) {
85 this.addContextPath = contextRelative;
86 }
87
88 public void setAddServletMapping(boolean addServletMapping) {
89 this.addServletMapping = addServletMapping;
90 }
91
92
95 public void setEncodingScheme(String encodingScheme) {
96 this.encodingScheme = encodingScheme;
97 }
98
99 public ModelAndView handleRequest(HttpServletRequest request,
100 HttpServletResponse response) throws Exception {
101
102 String destination = getDestination(request);
103 if (destination == null) {
104 response.sendError(HttpServletResponse.SC_NOT_FOUND);
105 return null;
106 }
107
108 StringBuffer url = new StringBuffer ();
109
110 if (addContextPath && destination.startsWith("/")) {
111 url.append(request.getContextPath());
112 }
113 if (addServletMapping) {
114 url.append(ServletUtils.getServletPrefix(request));
115 }
116
117 url.append(destination);
118
119 if (addServletMapping) {
120 url.append(ServletUtils.getServletSuffix(request));
121 }
122 appendParameters(url, request);
123 sendRedirect(request, response, url.toString());
124 return null;
125 }
126
127 protected String getDestination(HttpServletRequest request) {
128 return url;
129 }
130
131 protected void appendParameters(StringBuffer targetUrl,
132 HttpServletRequest request) throws UnsupportedEncodingException {
133
134 boolean first = (targetUrl.indexOf("?") == -1);
135 Enumeration paramNames = request.getParameterNames();
136 while (paramNames.hasMoreElements()) {
137 String name = (String ) paramNames.nextElement();
138 String [] values = request.getParameterValues(name);
139 for (int i = 0; i < values.length; i++) {
140 if (first) {
141 targetUrl.append('?');
142 first = false;
143 }
144 else {
145 targetUrl.append('&');
146 }
147 targetUrl.append(name).append('=');
148 if (values[i] != null) {
149 targetUrl.append(URLEncoder.encode(values[i], encodingScheme));
150 }
151 }
152 }
153 }
154
155
162 protected void sendRedirect(HttpServletRequest request,
163 HttpServletResponse response, String targetUrl) throws IOException {
164
165 if (http10Compatible) {
166 response.sendRedirect(response.encodeRedirectURL(targetUrl));
168 }
169 else {
170 response.setStatus(303);
172 response.setHeader("Location", response.encodeRedirectURL(targetUrl));
173 }
174 }
175
176 }
177 |
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