📄 showsource.java
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/** Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements. See the NOTICE file distributed with* this work for additional information regarding copyright ownership.* The ASF licenses this file to You 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.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); 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(); }} ⌨️ 快捷键说明
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