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The source code/* * Copyright 1999-2004 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 java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspTagException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.TagSupport; /** * 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(""); out.println(""); for(int ch = in.read(); ch != -1; ch = in.read()) if (ch == '<') out.print("<"); else out.print((char) ch); out.println(""); out.println(""); } catch (IOException ex) { throw new JspTagException("IOException: "+ex.toString()); } return super.doEndTag(); } } |
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