1.B / S and C / S

Comparative aB / S and C / S of

	B / S structure	B / S structure
Software Installation	Browser	The need for specialized client application
Upgrade and maintenance	Zero client maintenance	The client requires a separate maintenance and upgrades
Platform-dependent	Relationship with the operating system platform to minimize	The client operating systems are generally limited
Performance Security	In response speed and security need to spend more design costs	Can give full play to the client processing capabilities, fast response clients

b. What is B / S Technology

B / S architecture (Browser / server): The program is fully deployed on the server

Works B / S art: B / S architecture uses a request / response interaction mode

2. URL (Uniform Resource Locator Uniform Resource Locator)

URL composition -

3. Tomcat Server Introduction

Tomcat server: Apache Jakarta open source projects, JSP / Servlet container

Tomcat server's directory structure

table of Contents	Explanation
/bin	Used to start and stop the Tomcat script files are stored under a variety of platforms
/conf	Tomcat server storing various profiles
/lib	Tomcat server storage required for a variety of JAR file
/logs	Tomcat log file storage
/temp	Tomcat runtime for temporary files
/webapps	When you publish a Web application, Web files will be applied by default stored in this directory
/work	Tomcat JSP Servlet generated by the discharge at this directory

Tomcat server applications:

a. Unzip version of Tomcat configuration

Adding system variables, the name for the installation directory CATALINA_HOME, the value of Tomcat

Because Tomcat runs dependent on JRE, ensure that the JRE is installed and configured JRE_HOME environment variable.

Or configuration environment variable JAVA_HOME for JDK installed

b. Start and stop the Tomcat server

c.Tomcat service starts detection

IE address bar enter http: // localhost: port number

Tomcat start page into a successful interface

Tomcat port configuration: Modify Tomcat port number through the configuration file server.xml

4. Web project

The directory structure a. Web project

table of Contents	Explanation
/	Web application root directory of all the files in the directory can be accessed by the client (JSP, HTML, etc.)
/ WEB-INF	Storage applications using a variety of resources, the directory and its subdirectories are not accessible to the client
/WEB-INF/classes	Store all class files Web project
/WEB-INF/classes	JAR file storage Web application to use

b. Create, deploy, and publish project steps

Replication creates a page to the next application directory - code written Web applications - Create an application directory in the webapps directory

- Start the Tomcat service and access

c. Configure access page

web.xml modify configuration files accessed by the start page

d. Use an integrated development tool to create Web project

- Create a Web project: File -> New -> Web Project

- Naming and adjust the settings for the project

- View project directory structure

e. Common Errors

Tomcat does not start

Not to deploy Web applications

URL input errors

The directory can not be referenced: META-INF, the contents of WEB-INF folder can not be released - the index.html file folder drag WebRoot

5. JSP

a.jsp Profile

---- JSP (Java Server Pages) embedded Java script code in HTML

<%@ page language="java" import="java.util.*,java.text.*" 
	contentType= "text/html; charset=utf-8" %>
<html>
    <head>
        <title>输出当前日期</title>
    </head>
    <body>
        你好，今天是
        <% SimpleDateFormat formater =
              new SimpleDateFormat("yyyy年 MM月dd日");
    	    String strCurrentTime = formater.format(new Date()); %>	
        <%=strCurrentTime %>
    </body>
</html>

b. JSP page of instructions

---- attributes defined by a plurality of internal properties of the entire page

Syntax: < % @ Page Attribute 1 = "attribute value" Attribute 2 = "1 attribute value, the attribute value 2" ... n-attribute = "attribute value n"%>

Common properties

Attributes	description	Defaults
language	Specifies the scripting language used in the JSP page	java
import	Scripting language used to refer to the class files through the property	no
contentType	It is used to specify the encoding used by JSP pages	text/html, ISO-8859-1