1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34 package info.magnolia.cms.util;
35
36 import java.util.Enumeration;
37 import java.util.LinkedHashMap;
38 import javax.servlet.FilterConfig;
39 import javax.servlet.ServletConfig;
40 import javax.servlet.ServletRequest;
41 import javax.servlet.ServletRequestWrapper;
42 import javax.servlet.http.HttpServletRequest;
43
44 import org.apache.commons.lang.StringUtils;
45
46
47
48
49
50
51
52 public abstract class ServletUtil {
53
54 public static final String FORWARD_REQUEST_URI_ATTRIBUTE = "javax.servlet.forward.request_uri";
55 public static final String FORWARD_QUERY_STRING_ATTRIBUTE = "javax.servlet.forward.query_string";
56
57 public static final String INCLUDE_REQUEST_URI_ATTRIBUTE = "javax.servlet.include.request_uri";
58
59 public static final String ERROR_REQUEST_STATUS_CODE_ATTRIBUTE = "javax.servlet.error.status_code";
60
61
62
63
64
65 public static LinkedHashMap<String, String> initParametersToMap(ServletConfig config) {
66 LinkedHashMap<String, String> initParameters = new LinkedHashMap<String, String>();
67 Enumeration parameterNames = config.getInitParameterNames();
68 while (parameterNames.hasMoreElements()) {
69 String parameterName = (String) parameterNames.nextElement();
70 initParameters.put(parameterName, config.getInitParameter(parameterName));
71 }
72 return initParameters;
73 }
74
75
76
77
78
79 public static LinkedHashMap<String, String> initParametersToMap(FilterConfig config) {
80 LinkedHashMap<String, String> initParameters = new LinkedHashMap<String, String>();
81 Enumeration parameterNames = config.getInitParameterNames();
82 while (parameterNames.hasMoreElements()) {
83 String parameterName = (String) parameterNames.nextElement();
84 initParameters.put(parameterName, config.getInitParameter(parameterName));
85 }
86 return initParameters;
87 }
88
89
90
91
92 public static <T extends ServletRequest> T getWrappedRequest(ServletRequest request, Class<T> clazz) {
93 while (request != null) {
94 if (clazz.isAssignableFrom(request.getClass())) {
95 return (T) request;
96 }
97 request = (request instanceof ServletRequestWrapper) ? ((ServletRequestWrapper) request).getRequest() : null;
98 }
99 return null;
100 }
101
102
103
104
105 public static boolean isMultipart(HttpServletRequest request) {
106 String contentType = request.getContentType();
107 return contentType != null && contentType.toLowerCase().startsWith("multipart/");
108 }
109
110
111
112
113
114 public static boolean isForward(HttpServletRequest request) {
115 return request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE) != null && !isInclude(request);
116 }
117
118
119
120
121 public static boolean isInclude(HttpServletRequest request) {
122 return request.getAttribute(INCLUDE_REQUEST_URI_ATTRIBUTE) != null;
123 }
124
125
126
127
128
129
130 public static boolean isError(HttpServletRequest request) {
131 return request.getAttribute(ERROR_REQUEST_STATUS_CODE_ATTRIBUTE) != null;
132 }
133
134
135
136
137
138 public static DispatcherType getDispatcherType(HttpServletRequest request) {
139
140 if (request.getAttribute(INCLUDE_REQUEST_URI_ATTRIBUTE) != null) {
141 return DispatcherType.INCLUDE;
142 }
143 if (request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE) != null) {
144 return DispatcherType.FORWARD;
145 }
146 if (request.getAttribute(ERROR_REQUEST_STATUS_CODE_ATTRIBUTE) != null) {
147 return DispatcherType.ERROR;
148 }
149 return DispatcherType.REQUEST;
150 }
151
152
153
154
155
156 public static String getOriginalRequestURI(HttpServletRequest request) {
157 if (request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE) != null) {
158 return (String) request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE);
159 }
160 return request.getRequestURI();
161 }
162
163
164
165
166
167 public static String getOriginalRequestURLIncludingQueryString(HttpServletRequest request) {
168 if (request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE) != null) {
169 StringBuilder builder = new StringBuilder();
170
171 String scheme = request.getScheme();
172 builder.append(scheme).append("://").append(request.getServerName());
173
174 int port = request.getServerPort();
175 if ((scheme.equalsIgnoreCase("http") && port == 80) || (scheme.equalsIgnoreCase("https") && port == 443)) {
176
177 } else {
178 builder.append(":").append(port);
179 }
180
181 String requestUri = (String) request.getAttribute(FORWARD_REQUEST_URI_ATTRIBUTE);
182 builder.append(requestUri);
183
184 String queryString = (String) request.getAttribute(FORWARD_QUERY_STRING_ATTRIBUTE);
185 if (StringUtils.isNotEmpty(queryString)) {
186 builder.append("?").append(queryString);
187 }
188
189 return builder.toString();
190 }
191 StringBuilder builder = new StringBuilder();
192 builder.append(request.getRequestURL());
193 String queryString = request.getQueryString();
194 if (StringUtils.isNotEmpty(queryString)) {
195 builder.append("?").append(queryString);
196 }
197 return builder.toString();
198 }
199
200
201
202
203
204 public static String getRequestUri(HttpServletRequest request) {
205 if (request.getAttribute(INCLUDE_REQUEST_URI_ATTRIBUTE) != null)
206 return (String) request.getAttribute(INCLUDE_REQUEST_URI_ATTRIBUTE);
207 return request.getRequestURI();
208 }
209 }