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(""); 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(); } }