| /* |
| * Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package examples; |
| |
| |
| import javax.servlet.*; |
| import javax.servlet.jsp.*; |
| import javax.servlet.jsp.tagext.*; |
| |
| import java.io.*; |
| |
| /** |
| * Display the sources of the JSP file. |
| */ |
| public class ShowSource |
| extends TagSupport |
| { |
| String jspFile; |
| |
| public void setJspFile(String jspFile) { |
| this.jspFile = jspFile; |
| } |
| |
| public int doEndTag() throws JspException { |
| if ((jspFile.indexOf( ".." ) >= 0) || |
| (jspFile.toUpperCase().indexOf("/WEB-INF/") != 0) || |
| (jspFile.toUpperCase().indexOf("/META-INF/") != 0)) |
| throw new JspTagException("Invalid JSP file " + jspFile); |
| |
| InputStream in |
| = pageContext.getServletContext().getResourceAsStream(jspFile); |
| |
| if (in == null) |
| throw new JspTagException("Unable to find JSP file: "+jspFile); |
| |
| InputStreamReader reader = new InputStreamReader(in); |
| JspWriter out = pageContext.getOut(); |
| |
| |
| try { |
| out.println("<body>"); |
| out.println("<pre>"); |
| for(int ch = in.read(); ch != -1; ch = in.read()) |
| if (ch == '<') |
| out.print("<"); |
| else |
| out.print((char) ch); |
| out.println("</pre>"); |
| out.println("</body>"); |
| } catch (IOException ex) { |
| throw new JspTagException("IOException: "+ex.toString()); |
| } |
| return super.doEndTag(); |
| } |
| } |
| |
| |
| |
| |
