JSP, Servlet, JDBC Learning notes

Web-Learning
* Server
* Network Architecture (interview questions)
* C/S Client/server client/server Side example: QQ fast broadcast storm audio
* Advantages: Good interactivity, small server pressure.
* Cons: Client updated, download.

        * b/S Browser/server browser/server-side example: shopping site 12306 * Disadvantage: Server pressure is large.    * Advantage: Server update is OK.    * Web page Javaweb use Java Development Web page. * Static Web Resources * HTML, CSS, JAVASCRIPT * Dynamic Web resource * data changes.        Example: * servlet/jsp * ASP. NET Microsoft Development * PHP Open Source (development site that's fast), provide templates.        * Developed by RUBY Little Japan. * What does Java do?    Management system in the background, processing big data.        * Introduction of the server * Principle: Network programming.            * Concept: * Hardware: It is a host computer.             * Software: Server-installed software (tomcat).            * After installing the software, it is called the Web server.            * Start the server and access the resources. * Access: http://+ip+ port number to locate the host.            If the resource is a file, it can be accessed.            * Visit Baidu: http://www.baidu.com/* HTTP protocol The default port number is 80 and can not be written. * Ping www.baidu.com 61.135.169.121 * If you want to access the local server (extension) * http://localhost:80 *            HTTP://127.0.0.1:80 * Common server * WebLogic BEA developed (acquired by Oracle) charges support Java EE all specifications (EJB servlet/jsp specification) * (JAVA MySql (Oracle) WebLogic) * WebSphere IBM developed a fee that supports Java EE all specifications (EJB servlet/JSP specification) * The bank likes to use * Tomcat Apache (open source organization, very great) only servlet/jsp specification.    Free of charge.        * Tomcat installation and attention implementation * (Prerequisites) Install JDK, configure Java environment variables.        * Installation version (for customers) * Decompression version: Unzip the current folder, the directory does not have Chinese.        * Boot server: tomcat/bin/startup.bat (boot server) * Access: http://192.168.24.215:8080 Access server's home page. * Shut down the server: Click the Close button, Shutdown.bat * Common Startup issues * Configure environment variables.        C:\Program Files (x86) \java\jdk1.6.0_16 * Flash past, environment variables are not configured well.            * Port Occupancy Problem * Java.net.BindException:Address already in Use:jvm_bind * port is occupied.                    * Fix the problem: * End the application that consumes the port.                    * Locate the application that occupies the port.                * End the program in Task Manager by command Netstat–ano.                    * Modify the port number.                    * The configuration file has been modified. * Tomcat/conf/server.xml configuration file <connector port= "protocol=" http/1.1 "Connect                iontimeout= "20000" redirectport= "8443"/> * There are applications that occupy 80 ports, which are resolved using the top of the way. * Some WIN7 system comes with World Wide WebPublish IIS service, which consumes 80 ports by default. * If there is. To the service, the manual start.

JSP, Servlet, JDBC Learning notes