Bài Giảng Lập Trình JSP _P1

Server-side Web Programming Lecture 1: Course Introduction and Overview 2 Client-Server Web Architecture • Client browser sends request for page to server – May contain form data and other information • Server sends response page and sends to client • May need to generate response page dynamically – Form parameters – Previous requests (such as items purchased so far) – Information in database Focus of this course 3 Client-Server Web Architecture Client Browser www.cis.ysu.edu/ ~john/Syllabus.htm Request to www.cis.ysu.edu for Syllabus.htm Server john public_html Syllabus.htm port Response containing Syllabus.htm as a long string (<html><head><title>CSCI 6962 Syllabus</title></head><body>…) 4 Form Handling • Form data appended to request string Generates the request: http://frodo.cis.ysu.edu/~john/cgi-bin/test.pl&quantity=3 <FORM NAME="purchaseform" METHOD=GET ACTION=http://frodo.cis.ysu.edu/~john/cgi-bin/test.pl> Quantity: <INPUT TYPE="text" SIZE="8" NAME="quantity" /> <BR /><BR /> <INPUT TYPE="submit" VALUE="SUBMIT"> </FORM> 5 Form Handling Server must: – Listen on port for requests – Parse request to determine values of parameters – Generate appropriate response page based on parameter values – Send response page back to client 6 Course Topics • Server-side Web Containers • Java Server Pages • Web Site Architecture • Session Handling • Database Manipulation • Mobile Device Handling • Security 7 Web Containers • Program running continuously on server • Runs code to handle requests and generate responses • Handles other important functions: – Session tracking – Database access – Email generation – Security and encryption 8 Server Pages • Perl/cgi-bin approach: Generate response page one character at a time • Server page approach: Create html “template” with “spaces” to be filled in <HTML> <HEAD><TITLE>cgi-bin response</TITLE></HEAD> <BODY> <P> Thank you for your order of insert value of quantity here widgets! </P> </BODY> </HTML> 9 Java Server Pages <HTML> <HEAD><TITLE>cgi-bin response</TITLE></HEAD> <BODY> <P> Thank you for your order of <%= request.getParameter(“quantity”) %> widgets! </P> </BODY> </HTML> 10 Control-View Architecture • Different user input might require different response pages – Different types of request – Errors/missing field values, etc. • Servlets: Code to determine and redirect to appropriate response JSP request Control servlet JSP JSP JSP response JSPs for views [...]... • Database driver provides access to databases • JDBC: classes to query/manipulate database • Efficiency issues – Prepared statements – Connection pooling web container database server control servlet JSP database driver DBMS database JDBC 14 Tools We will be Using • Jakarta Tomcat web container • Java programming language • NetBeans IDE • MySQL database server • WURFL and WALL for mobile devices All . etc. • Servlets: Code to determine and redirect to appropriate response JSP request Control servlet JSP JSP JSP response JSPs for views 11 User-friendly Error Handling • Tell user what went wrong • Don’t. database • Efficiency issues – Prepared statements – Connection pooling web container control servlet JSP database database driver JDBC DBMS database server 15 Tools We will be Using • Jakarta Tomcat

Bài Giảng Lập Trình JSP _P1

Thông tin tài liệu

Từ khóa liên quan

Mục lục

Server-side Web Programming

Client-Server Web Architecture

Slide 3

Form Handling

Slide 5

Course Topics

Web Containers

Server Pages

Java Server Pages

Control-View Architecture

User-friendly Error Handling

Session Handling

Slide 13

Database Manipulation

Tools We will be Using

Background Knowledge

Assignments

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