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