ParameterInterceptor


1   package org.javabb.interceptor;
2   
3   import java.util.Iterator  ;
4   import java.util.Map  ;
5   
6   import org.apache.commons.lang.StringUtils;
7   
8   import com.opensymphony.xwork.ActionContext;
9   import com.opensymphony.xwork.ActionInvocation;
10  import com.opensymphony.xwork.interceptor.Interceptor;
11  
12  /*
13   * Copyright 2004 JavaFree.org
14   *
15   * Licensed under the Apache License, Version 2.0 (the "License");
16   * you may not use this file except in compliance with the License.
17   * You may obtain a copy of the License at
18   *
19   *     http://www.apache.org/licenses/LICENSE-2.0
20   *
21   * Unless required by applicable law or agreed to in writing, software
22   * distributed under the License is distributed on an "AS IS" BASIS,
23   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
24   * See the License for the specific language governing permissions and
25   * limitations under the License.
26   */
27  
28  /**
29   * $Id: ParameterInterceptor.java,v 1.3.8.2 2006/04/17 17:47:08 daltoncamargo Exp $
30   * @author Ronald Tetsuo Miura
31   */
32  public class ParameterInterceptor implements Interceptor {
33  
34      String   allowedBeans = "";
35  
36      /**
37       * @param allowedBeans
38       */
39      public void setAllowedBeans(String  [] allowedBeans) {
40          this.allowedBeans = StringUtils.join(allowedBeans, '|');
41      }
42  
43      /**
44       * @see com.opensymphony.xwork.interceptor.Interceptor#intercept(com.opensymphony.xwork.ActionInvocation)
45       */
46      public String   intercept(ActionInvocation invocation) throws Exception   {
47          String   regex = "^(?:" + allowedBeans + ")?\\.?[^.]*$";
48  
49          Map   parameters = ActionContext.getContext().getParameters();
50          Iterator   it = parameters.keySet().iterator();
51          while (it.hasNext()) {
52              String   param = (String  ) it.next();
53              if (!param.matches(regex)) {
54                  it.remove();
55              }
56          }
57          return invocation.invoke();
58      }
59  
60      /**
61       * @see com.opensymphony.xwork.interceptor.Interceptor#destroy()
62       */
63      public void destroy() {
64          // TODO Auto-generated method stub
65      }
66  
67      /**
68       * @see com.opensymphony.xwork.interceptor.Interceptor#init()
69       */
70      public void init() {
71          // TODO Auto-generated method stub
72      }
73  }
74
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