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