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1   /*
2    * $Id: StrutsResourceLoader.java 439747 2006-09-03 09:22:46Z mrdon $
3    *
4    * Copyright 2006 The Apache Software Foundation.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *      http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.struts2.views.velocity;
19  
20  import java.io.InputStream;
21  
22  import org.apache.struts2.util.ClassLoaderUtils;
23  import org.apache.velocity.exception.ResourceNotFoundException;
24  import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
25  
26  
27  /***
28   * Loads resource from the Thread's context ClassLoader.
29   *
30   */
31  public class StrutsResourceLoader extends ClasspathResourceLoader {
32  
33      public synchronized InputStream getResourceStream(String name) throws ResourceNotFoundException {
34          if ((name == null) || (name.length() == 0)) {
35              throw new ResourceNotFoundException("No template name provided");
36          }
37  
38          if (name.startsWith("/")) {
39              name = name.substring(1);
40          }
41  
42          try {
43              return ClassLoaderUtils.getResourceAsStream(name, StrutsResourceLoader.class);
44          } catch (Exception e) {
45              throw new ResourceNotFoundException(e.getMessage());
46          }
47      }
48  }