View Javadoc

1   /*
2    * $Id: StrutsResourceLoader.java 471756 2006-11-06 15:01:43Z husted $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  package org.apache.struts2.views.velocity;
22  
23  import java.io.InputStream;
24  
25  import org.apache.struts2.util.ClassLoaderUtils;
26  import org.apache.velocity.exception.ResourceNotFoundException;
27  import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
28  
29  
30  /***
31   * Loads resource from the Thread's context ClassLoader.
32   *
33   */
34  public class StrutsResourceLoader extends ClasspathResourceLoader {
35  
36      public synchronized InputStream getResourceStream(String name) throws ResourceNotFoundException {
37          if ((name == null) || (name.length() == 0)) {
38              throw new ResourceNotFoundException("No template name provided");
39          }
40  
41          if (name.startsWith("/")) {
42              name = name.substring(1);
43          }
44  
45          try {
46              return ClassLoaderUtils.getResourceAsStream(name, StrutsResourceLoader.class);
47          } catch (Exception e) {
48              throw new ResourceNotFoundException(e.getMessage());
49          }
50      }
51  }