Web Study Day Fourth

Day4 Web Development

Protocol Port

HTTP 80

SMTP 25

POP3 110

FTP 23

HTTPS 443

Mapping Method

1.Configure the context element in theserver.xml file

<context path= "/itcast" docbase= "D:\news"/>

Need to restart server

2, new XML file configuration context under Tomcat\conf\catalina\localhost directory elements, etc.;

<context docbase= "D:\news"/>

Change the file name to Root.xml need to restart the server

3,tomcat Auto Map

put the web app (News folder) in the webapps directory

The composition of WEB applications

Configuring a virtual host

Ww.sina.con

1 Configuring Host Context in the server.xml file

2, create a New directory under the C drive sina\mail application

3, C:\Windows\System32\drivers\etc directory hosts file set IP Address

Web resource access process

1, query Windows, get host name relative to IP

2, query DNS, get host name corresponding IP

3, connect the sina server with the IP of the query

4, send http request

5, obtain the host that the client wants to access from the request is the information

6. Get the Web app Thecustomer wants to access from the requested information Center

7. Get the Web Resources The customer wants to access from the requested information Center

8, readthe web Resources under theWeb application under the corresponding host

9, Create an http response with the data that isread to the Web Resource

Server loopback http response

One, the browser receives HTTP to operate, resolves the resource data display

with The reloadable element of the Context element , allowing tomcat to automatically load the updated Web app

Configuring HTTPS connectors

1,keytool-genkey-alias tomcat-keyalg RSA

Get . keystore file

C:\Users\ Huang Xianle >keytool-genkey-alias tomcat-keyalg RSA

Enter KeyStore password :

Enter the new password again :

what is your first and last name ?

[Unknown]: localhost

What is the name of your organizational unit ?

[Unknown]:

What is your organization's name ?

[Unknown]:

What is the name of your city or region ?

[Unknown]:

What is the name of your state/province ?

[Unknown]:

What is the two-letter country/region code for this unit ?

[Unknown]:

Cn=localhost, Ou=unknown, O=unknown, L=unknown, St=unknown, C=unknown right ?

[ no ]: y

Enter the key password for <tomcat>

( if the keystore password is the same, press ENTER ):

C:\Users\ Huang Xianle ;

2, write in server.xml

<connector port= "8443" protocol= "http/1.1" sslenabled= "true"

maxthreads= "Scheme=" "https" secure= "true"

Clientauth= "false" sslprotocol= "TLS" keystorefile= "Conf/.keystore" keystorepass= "123456"/>

3,https://localhost:8443/

Management platform for Tomcat server

Open the following code in conf\tomcat-users.xml and write

<role rolename= "Tomcat"/>

<role rolename= "Role1"/>

<role rolename= "manager"/>

<user username= "Tomcat" password= "Tomcat" roles= "Tomcat, manager"/>

<user username= "Both" password= "Tomcat" roles= "Tomcat,role1"/>

<user username= "Role1" password= "Tomcat" roles= "Role1"/>

http Protocol http Request

Request Line

Request Header

accept:test/html/image/*

used to tell the server what type of data the client supports

Accept-charset:iso-8859-1

used to tell the server that the encoding used by the client

Accept-encoding:gzip,compress

used to tell the server that the client supports the data compression format

Accept-language:en-us,zh-cn

The language environment of the client

Host:www.it315.org:80

The client uses this header to tell the server that the host name you want to access

if-modified-since:tue,11 Jul 18:23:51 GMT

The client tells the server through this header that the cache time of the resource

referer:http://www.it315.org/index.jsp

The client tells the server through this header which resource is accessing the server (anti-theft chain)

user-agent:moailla/4.0 (compatible; MSIE 5.5; Windows NT5.0)

The client uses this header to tell the server that the client's software environment

Cookies

This header allows the client to bring data to the server

Connection:close/keep-alive

The client shuts down or keeps the connection through this header request

data:tue,11 Jul 18:23:51 GMT

Current time

http Response

Status Line

Response Header

Location:http://www.it325.org/index.jsp

This header is used with the 302 status code to tell the customer who to look for

Sever:apache Tomcat

The server passes this header and tells the browser the type of the server

Contend-encoding:gzip

Server through this header, tell the browser data compression format

Contend-length:80

The server passes this header and tells the browser the length of the loopback data

Contend-language:zh-cn

contend-type:text/html; charset=gb2312

The server passes this header, telling the browser to echo the length of the data

last-modified:tue,11 Jul 18:23:51 GMT

The server passes this header and tells the browser the current cache time of the resource

refresh:1;url=http://www.it315.org

The server passes this header and tells the browser how long it takes to refresh

Contend-disposition:attachment;filename=aaa.zip

The server passes this header and tells the browser to open the data by following the download method

Thansfer-encoding:chunked

The server passes this header and tells the browser the data transfer format

Set-cookie:ss=qq=5lb_nq;path=/search

etag:w/"7777-124223490400"

Cache-Related headers

Expires:-1

The server passes this header and tells the browser how long to cache the loopback resource, 1 or 0, and the test does not cache

Cache-control:no-cache

Pragma:no-cache

Server through the above two headers, control the browser do not cache data

Connection:close/keep-alive

data:tue,11 Jul 18:23:51 GMT

http utility header

Web Study Day Fourth