View Javadoc
1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.fileupload.servlet;
18  
19  import static java.lang.String.format;
20  
21  import java.io.IOException;
22  import java.io.InputStream;
23  
24  import javax.servlet.http.HttpServletRequest;
25  
26  import org.apache.commons.fileupload.FileUploadBase;
27  import org.apache.commons.fileupload.UploadContext;
28  
29  /**
30   * <p>Provides access to the request information needed for a request made to
31   * an HTTP servlet.</p>
32   *
33   * @since FileUpload 1.1
34   */
35  public class ServletRequestContext implements UploadContext {
36  
37      // ----------------------------------------------------- Instance Variables
38  
39      /**
40       * The request for which the context is being provided.
41       */
42      private final HttpServletRequest request;
43  
44      // ----------------------------------------------------------- Constructors
45  
46      /**
47       * Construct a context for this request.
48       *
49       * @param request The request to which this context applies.
50       */
51      public ServletRequestContext(HttpServletRequest request) {
52          this.request = request;
53      }
54  
55      // --------------------------------------------------------- Public Methods
56  
57      /**
58       * Retrieve the character encoding for the request.
59       *
60       * @return The character encoding for the request.
61       */
62      @Override
63      public String getCharacterEncoding() {
64          return request.getCharacterEncoding();
65      }
66  
67      /**
68       * Retrieve the content type of the request.
69       *
70       * @return The content type of the request.
71       */
72      @Override
73      public String getContentType() {
74          return request.getContentType();
75      }
76  
77      /**
78       * Retrieve the content length of the request.
79       *
80       * @return The content length of the request.
81       * @deprecated 1.3 Use {@link #contentLength()} instead
82       */
83      @Override
84      @Deprecated
85      public int getContentLength() {
86          return request.getContentLength();
87      }
88  
89      /**
90       * Retrieve the content length of the request.
91       *
92       * @return The content length of the request.
93       * @since 1.3
94       */
95      @Override
96      public long contentLength() {
97          long size;
98          try {
99              size = Long.parseLong(request.getHeader(FileUploadBase.CONTENT_LENGTH));
100         } catch (NumberFormatException e) {
101             size = request.getContentLength();
102         }
103         return size;
104     }
105 
106     /**
107      * Retrieve the input stream for the request.
108      *
109      * @return The input stream for the request.
110      *
111      * @throws IOException if a problem occurs.
112      */
113     @Override
114     public InputStream getInputStream() throws IOException {
115         return request.getInputStream();
116     }
117 
118     /**
119      * Returns a string representation of this object.
120      *
121      * @return a string representation of this object.
122      */
123     @Override
124     public String toString() {
125         return format("ContentLength=%s, ContentType=%s",
126                 Long.valueOf(this.contentLength()),
127                 this.getContentType());
128     }
129 
130 }