JavaWeb study notes 20/10/10

TOMCAT

1. 1Tomcat startup and configuration

• Folder function:
  

• Startup, shutdown (bin->startup.bat/shutdown.bat) — Tomcat website

Possible problems with configuration:

• Java environment variables are not configured
• Crash back, need to configure compatibility
• Garbled, set in the configuration file
  

You can configure the port number to start:

• The default port number of tomcat is: 8080
• mysq|: 3306
• http: 80
• https: 443

<Connector executor="tomcatThreadPool"
           port="8080" protocol="HTTP/1.1"
           connectionTimeout="20000"
           redirectPort="8443" />

The name of the host can be configured:

      <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true">

• The default host name is: localhost->127.0.0.1
• The default website application storage location is: webapps

Interview question: please talk about how the website is accessed

1. Enter a domain name and press enter
2. Check the local C:\Windows\System32\drivers\etc\hosts configuration file for this domain name mapping

• Yes: return the corresponding ip address directly, this address contains the web program we need to access, which can be accessed directly
• No: Go to the DNS server to find, return if found, return not found if not found
  

1. 2 Publish a Web site

Put the website you wrote in the folder (webapps) of the web application specified in the server (Tomcat), and you can access it

• The structure of the website

-webapps Tomcat服务器的web目录
    -ROOT
	-XXX :网站的目录名
		-WEB-INF
		-classes java程序
		-1ib web应用所依赖的jar包
		-web.xm1 网站配置文件
	- index.htm1 默认的首页
	- static
  		-CSS
  			-sty1e.css
  		-js
  		-img
    -......