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1   /*
2   * Copyright 2004 The Apache Software Foundation
3   *
4   * Licensed under the Apache License, Version 2.0 (the "License");
5   * you may not use this file except in compliance with the License.
6   * You may obtain a copy of the License at
7   *
8   *     http://www.apache.org/licenses/LICENSE-2.0
9   *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16  package examples;
17  
18  
19  import javax.servlet.jsp.*;
20  import javax.servlet.jsp.tagext.*;
21  
22  import java.io.IOException;
23  
24  /**
25   * Log the contents of the body. Could be used to handle errors etc. 
26   */
27  public class LogTag 
28      extends ExampleTagBase
29  {
30      boolean toBrowser = false;
31      
32      public void setToBrowser(String value) {
33          if (value == null)
34              toBrowser = false;
35          else if (value.equalsIgnoreCase("true"))
36              toBrowser = true;
37          else
38              toBrowser = false;
39      }
40  
41      public int doStartTag() throws JspException {
42          return EVAL_BODY_TAG;
43      }
44      
45      public int doAfterBody() throws JspException {
46          try {
47              String s = bodyOut.getString();
48              System.err.println(s);
49              if (toBrowser)
50                  bodyOut.writeOut(bodyOut.getEnclosingWriter());
51              return SKIP_BODY;
52          } catch (IOException ex) {
53              throw new JspTagException(ex.toString());
54          }
55      }
56  }
57  
58      
59          
60