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 java.io.IOException;
021    
022    import javax.servlet.jsp.JspException;
023    import javax.servlet.jsp.JspTagException;
024    
025    /**
026     * Log the contents of the body. Could be used to handle errors etc.
027     */
028    public class LogTag
029            extends ExampleTagBase {
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