Home > Developer > JSP

Javaweb Base JSP Comment HTML comment Java comment

Source: Internet
Author: User
Tags html comment volatile apache tomcat
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞



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

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
comment comment comment out in html html comment inside tag html comment out tag html comment tag comment in html html multi line comment
Related Article
Set the html/jsp edit automatic prompt in MyEclipse 9/10 __html
JSP (6)--JSP declaration
Springboot load JSP refresh JSP, refresh controller (try it Y...
Javax.servlet.jsp.PageContext cannot is resolved to a type
A simple calculator for JSP exercises (using Jsp+javabean mode)
Use absolute path $ {pagecontext. Request. contextpath} in JSP}

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More