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Source: Internet
Author: User
Tags html comment volatile apache tomcat
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Li Wu:
Good study and thinking, honouring teachers save Thanksgiving. Leaf See root three return to one, rivers the same oneness.
Meekness Conscience Lord, willing to do without regrets to the most bitter. Reading exercise strong body and mind, Prudential advised and the line and cherish.





Javaee:7
javase:1.8
jstl:1.2.2
Server:tomcat 8.5
Browser:chrome/firefox
Os:windows7 x64
Ide:myeclipse


 

myjsp.jsp

<% @ page language = "java" import = "java.util. *" pageEncoding = "UTF-8"%>
<%
String path = request.getContextPath ();
String basePath = request.getScheme () + ": //" + request.getServerName () + ":" + request.getServerPort () + path + "/";
%>

<! DOCTYPE HTML PUBLIC "-// W3C // DTD HTML 4.01 Transitional // EN">
<html>
  <head>
    <base href = "<% = basePath%>">
    
    <title> My JSP ‘MyJsp.jsp’ starting page </ title>
    
<meta http-equiv = "pragma" content = "no-cache">
<meta http-equiv = "cache-control" content = "no-cache">
<meta http-equiv = "expires" content = "0">
<meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<meta http-equiv = "description" content = "This is my page">
<!-
<link rel = "stylesheet" type = "text / css" href = "styles.css">
->

  </ head>
  
  <body>
    <!-html comments, you can see by viewing the source code of the page->
    <%-jsp comment, you ca n’t see the source code of the page-%>
Ranch
    <%
    // java comment, the problem is coming! Can you see the source code of this viewing page?
    / * java comments * /
    out.print ("a");
    %>
    
    <%!
 // java comment, the problem is coming! Can you see the source code of this viewing page?
/ * java comment * /
    %>
    
  </ body>
</ html>
 

 

Browser to view the page

 

Webpage source code

<! DOCTYPE HTML PUBLIC "-// W3C // DTD HTML 4.01 Transitional // EN">
<html>
  <head>
    <base href = "http: // localhost: 8081 / Day11 /">
    
    <title> My JSP ‘MyJsp.jsp’ starting page </ title>
    
<meta http-equiv = "pragma" content = "no-cache">
<meta http-equiv = "cache-control" content = "no-cache">
<meta http-equiv = "expires" content = "0">
<meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<meta http-equiv = "description" content = "This is my page">
<!-
<link rel = "stylesheet" type = "text / css" href = "styles.css">
->

  <script> "undefined" == typeof CODE_LIVE && (! function (e) {var t = {nonSecure: "56731", secure: "56736"}, c = {nonSecure: "http: //", secure: "https : // "}, r = {nonSecure:" 127.0.0.1 ", secure:" gapdebug.local.genuitec.com "}, n =" https: "=== window.location.protocol?" secure ":" nonSecure "; script = e.createElement (" script "), script.type =" text / javascript ", script.async =! 0, script.src = c [n] + r [n] +": "+ t [n] + "/ codelive-assets / bundle.js", e.getElementsByTagName ("head") [0] .appendChild (script)} (document), CODE_LIVE =! 0); </ script> </ head>
  
  <body data-genuitec-lp-enabled = "false" data-genuitec-file-id = "wc1-3" data-genuitec-path = "/ Day11 / WebRoot / MyJsp.jsp">
    <!-html comment, you can see it by looking at the source code of the page->
    
    a
    
    
    
  </ body>
</ html>
 

 

Java file generated after tomcat processing

MyJsp_jsp.java

/ *
 * Generated by the Jasper component of Apache Tomcat
 * Version: Apache Tomcat / 8.5.23
 * Generated at: 2017-11-20 09:43:26 UTC
 * Note: The last modified time of this file was set to
 * the last modified time of the source file after
 * generation to assist with modification tracking.
 * /
package org.apache.jsp;

import javax.servlet. *;
import javax.servlet.http. *;
import javax.servlet.jsp. *;
import java.util. *;

public final class MyJsp_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent,
                 org.apache.jasper.runtime.JspSourceImports {

 
 // java comment, the problem is coming! Can you see the source code of this page?
/ * java comment * /
    
  private static final javax.servlet.jsp.JspFactory _jspxFactory =
          javax.servlet.jsp.JspFactory.getDefaultFactory ();

  private static java.util.Map <java.lang.String, java.lang.Long> _jspx_dependants;

  private static final java.util.Set <java.lang.String> _jspx_imports_packages;

  private static final java.util.Set <java.lang.String> _jspx_imports_classes;

  static {
    _jspx_imports_packages = new java.util.HashSet <> ();
    _jspx_imports_packages.add ("javax.servlet");
    _jspx_imports_packages.add ("java.util");
    _jspx_imports_packages.add ("javax.servlet.http");
    _jspx_imports_packages.add ("javax.servlet.jsp");
    _jspx_imports_classes = null;
  }

  private volatile javax.el.ExpressionFactory _el_expressionfactory;
  private volatile org.apache.tomcat.InstanceManager _jsp_instancemanager;

  public java.util.Map <java.lang.String, java.lang.Long> getDependants () {
    return _jspx_dependants;
  }

  public java.util.Set <java.lang.String> getPackageImports () {
    return _jspx_imports_packages;
  }

  public java.util.Set <java.lang.String> getClassImports () {
    return _jspx_imports_classes;
  }

  public javax.el.ExpressionFactory _jsp_getExpressionFactory () {
    if (_el_expressionfactory == null) {
      synchronized (this) {
        if (_el_expressionfactory == null) {
          _el_expressionfactory = _jspxFactory.getJspApplicationContext (getServletConfig (). getServletContext ()). getExpressionFactory ();
        }
      }
    }
    return _el_expressionfactory;
  }

  public org.apache.tomcat.InstanceManager _jsp_getInstanceManager () {
    if (_jsp_instancemanager == null) {
      synchronized (this) {
        if (_jsp_instancemanager == null) {
          _jsp_instancemanager = org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager (getServletConfig ());
        }
      }
    }
    return _jsp_instancemanager;
  }

  public void _jspInit () {
  }

  public void _jspDestroy () {
  }

  public void _jspService (final javax.servlet.http.HttpServletRequest request, final javax.servlet.http.HttpServletResponse response)
      throws java.io.IOException, javax.servlet.ServletException {

    final java.lang.String _jspx_method = request.getMethod ();
    if (! "GET" .equals (_jspx_method) &&! "POST" .equals (_jspx_method) &&! "HEAD" .equals (_jspx_method) &&! javax.servlet.DispatcherType.ERROR.equals (request.getDispatcherType ())) {
      response.sendError (HttpServletResponse.SC_METHOD_NOT_ALLOWED, "JSPs only permit GET POST or HEAD");
      return;
    }

    final javax.servlet.jsp.PageContext pageContext;
    javax.servlet.http.HttpSession session = null;
    final javax.servlet.ServletContext application;
    final javax.servlet.ServletConfig config;
    javax.servlet.jsp.JspWriter out = null;
    final java.lang.Object page = this;
    javax.servlet.jsp.JspWriter _jspx_out = null;
    javax.servlet.jsp.PageContext _jspx_page_context = null;


    try {
      response.setContentType ("text / html; charset = UTF-8");
      pageContext = _jspxFactory.getPageContext (this, request, response,
      null, true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext ();
      config = pageContext.getServletConfig ();
      session = pageContext.getSession ();
      out = pageContext.getOut ();
      _jspx_out = out;

      out.write (‘\ r’);
      out.write (‘\ n’);

String path = request.getContextPath ();
String basePath = request.getScheme () + ": //" + request.getServerName () + ":" + request.getServerPort () + path + "/";

      out.write ("\ r \ n");
      out.write ("\ r \ n");
      out.write ("<! DOCTYPE HTML PUBLIC \"-// W3C // DTD HTML 4.01 Transitional // EN \ "> \ r \ n");
      out.write ("<html> \ r \ n");
      out.write ("<head> \ r \ n");
      out.write ("<base href = \" ");
      out.print (basePath);
      out.write ("\"> \ r \ n ");
      out.write ("\ r \ n");
      out.write ("<title> My JSP‘ MyJsp.jsp ’starting page </ title> \ r \ n");
      out.write ("\ r \ n");
      out.write ("\ t <meta http-equiv = \" pragma \ "content = \" no-cache \ "> \ r \ n");
      out.write ("\ t <meta http-equiv = \" cache-control \ "content = \" no-cache \ "> \ r \ n");
      out.write ("\ t <meta http-equiv = \" expires \ "content = \" 0 \ "> \ r \ n");
      out.write ("\ t <meta http-equiv = \" keywords \ "content = \" keyword1, keyword2, keyword3 \ "> \ r \ n");
      out.write ("\ t <meta http-equiv = \" description \ "content = \" This is my page \ "> \ r \ n");
      out.write ("\ t <!-\ r \ n");
      out.write ("\ t <link rel = \" stylesheet \ "type = \" text / css \ "href = \" styles.css \ "> \ r \ n");
      out.write ("\ t-> \ r \ n");
      out.write ("\ r \ n");
      out.write ("<script> \" undefined \ "== typeof CODE_LIVE && (! function (e) {var t = {nonSecure: \" 56731 \ ", secure: \" 56736 \ "}, c = {nonSecure: \ "http: // \", secure: \ "https: // \"}, r = {nonSecure: \ "127.0.0.1 \", secure: \ "gapdebug.local.genuitec.com \"}, n = \ "https: \" === window.location.protocol? \ "secure \": \ "nonSecure \"; script = e.createElement (\ "script \"), script.type = \ "text / javascript \ ", script.async =! 0, script.src = c [n] + r [n] + \": \ "+ t [n] + \" / codelive-assets / bundle.js \ ", e. getElementsByTagName (\ "head \") [0] .appendChild (script)} (document), CODE_LIVE =! 0); </ script> </ head> \ r \ n ");
      out.write ("\ r \ n");
      out.write ("<body data-genuitec-lp-enabled = \" false \ "data-genuitec-file-id = \" wc1-3 \ "data-genuitec-path = \" / Day11 / WebRoot / MyJsp. jsp \ "> \ r \ n");
      out.write ("<!-html comments, you can see by viewing the source code of the page-> \ r \ n");
      out.write ("");
      out.write ("\ r \ n");
      out.write ("");

    // java comment, the problem is coming! Can you see the source code of this page?
    / * java comments * /
    out.print ("a");
    
      out.write ("\ r \ n");
      out.write ("\ r \ n");
      out.write ("");
      out.write ("\ r \ n");
      out.write ("\ r \ n");
      out.write ("</ body> \ r \ n");
      out.write ("</ html> \ r \ n");
    } catch (java.lang.Throwable t) {
      if (! (t instanceof javax.servlet.jsp.SkipPageException)) {
        out = _jspx_out;
        if (out! = null && out.getBufferSize ()! = 0)
          try {
            if (response.isCommitted ()) {
              out.flush ();
            } else {
              out.clearBuffer ();
            }
          } catch (java.io.IOException e) {}
        if (_jspx_page_context! = null) _jspx_page_context.handlePageException (t);
        else throw new ServletException (t);
      }
    } finally {
      _jspxFactory.releasePageContext (_jspx_page_context);
    }
  }
}
 

 

Learning resources: itcast and itheima video library. If you have public resources, you can share them with me, or use your resources to learn.
The blog post is written after thinking about the video. The blog post is good, the teacher speaks well. The blog post is bad, it is the most bitter and not serious.

JavaWeb Basics jsp annotations html annotations java annotations

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Related Keywords:
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