001    /*
002    * Copyright 2004 The Apache Software Foundation
003    *
004    * Licensed under the Apache License, Version 2.0 (the "License");
005    * you may not use this file except in compliance with the License.
006    * You may obtain a copy of the License at
007    *
008    *     http://www.apache.org/licenses/LICENSE-2.0
009    *
010    * Unless required by applicable law or agreed to in writing, software
011    * distributed under the License is distributed on an "AS IS" BASIS,
012    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013    * See the License for the specific language governing permissions and
014    * limitations under the License.
015    */
016    package examples;
017    
018    
019    import javax.servlet.jsp.*;
020    import javax.servlet.jsp.tagext.*;
021    
022    import java.io.IOException;
023    
024    /**
025     * Log the contents of the body. Could be used to handle errors etc. 
026     */
027    public class LogTag 
028        extends ExampleTagBase
029    {
030        boolean toBrowser = false;
031        
032        public void setToBrowser(String value) {
033            if (value == null)
034                toBrowser = false;
035            else if (value.equalsIgnoreCase("true"))
036                toBrowser = true;
037            else
038                toBrowser = false;
039        }
040    
041        public int doStartTag() throws JspException {
042            return EVAL_BODY_TAG;
043        }
044        
045        public int doAfterBody() throws JspException {
046            try {
047                String s = bodyOut.getString();
048                System.err.println(s);
049                if (toBrowser)
050                    bodyOut.writeOut(bodyOut.getEnclosingWriter());
051                return SKIP_BODY;
052            } catch (IOException ex) {
053                throw new JspTagException(ex.toString());
054            }
055        }
056    }
057    
058        
059            
060