Here's how to implement a Dynamic FAQ (FAQ and Answer) Web site with SQL Server.
First, create a database FAQ, where the table FAQs has a field ID (int, autoincrement, and set as the primary key), subject (VARCHAR,200), Answers (text). This table can contain some common questions and answers about programming knowledge. Then, add system DSN to the ODBC DataSource module in Control Panel, name the FAQ, and point to the FAQ database. Create a JavaBean, named Faq.java, and save it in the C:\JBuilder4\tomcat\webapps\test directory.
The contents of Faq.java are as follows:
Package test;
Import java.sql.*;
public class FAQ {
String sdbdriver = "Sun.jdbc.odbc.JdbcOdbcDriver";
String sConnStr = "Jdbc:odbc:faq";
Connection conn = null;
ResultSet rs = null;
Public FAQ () {
try {
Class.forName (Sdbdriver);
}
catch (Java.lang.ClassNotFoundException e) {
System.err.println ("FAQ ():" + e.getmessage ());
}
}
Public ResultSet executequery (String sql) {
rs = null;
try {
conn = Drivermanager.getconnection (SCONNSTR);
Statement stmt = Conn.createstatement ();
rs = stmt.executequery (SQL);
}
catch (SQLException ex) {
System.err.println ("Aq.executequery:" + ex.getmessage ());
}
Return RS;
}
}
After compiling Faq.java with the method described in the previous section, create a JSP file faq.jsp under the Jc:\jbuilder4\tomcat\webapps\test directory, which reads as follows:
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<title> My FAQ!</title>
<body>
<p><b> this is my faq!</b></p>.
<%@ page language= "java" import= "java.sql.*"%>
<jsp:usebean id= "workm" scope= "page" class= "Test.faq"/>
<%
ResultSet RS = Workm.executequery ("SELECT * from FAQs");
String tt;
while (Rs.next ()) {
tt = rs.getstring ("Answer");
Out.print ("<LI>" + rs.getstring ("Subject") + "</LI>");
Out.print ("<pre>" + TT + "</pre>");
}
Rs.close ();
%>
Type http://localhost:8080/test/faq.jsp,faq.jsp call JavaBean in the address bar of the browser, read the content from the database and output, and get the results as shown in Figure 5.
