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