6. JSP – Handling Forms The form: <html> <body> <form action="welcome.jsp" method="post"> Name: <input type="text" name="name" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> Handler: <html> <body> Welcome <%request.getParameter("name”)%> .<br /> You are <%request.getParameter("age”)%> years old. </body> </html>
7. PHP – Handling Forms The form: <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> Handler: <html> <body> Welcome <?php echo $_REQUEST["name"]; ?> .<br /> You are <?php echo $_REQUEST["age"]; ?> years old. </body> </html>
8. JSP - Session <html> <body> <% //Get current session or create a new session HtppSession session = request.getSession(true); //Add information to the session session.setAttribute(“name”, “Pramati”); //Print the information out.println(session.getAttribute(“name”); %> </body> </html>
9. PHP - Session //Getting or starting a new session <?php session_start(); ?> <html> <body> <?php //Add information to the session $_SESSION['name']= “Pramati”; //Print the information echo $_SESSION['name']; ?> </body> </html>
12. JSP – Mail sender bean – Page 1 import javax.mail.*; //JavaMail packages import javax.mail.internet.*; //JavaMail Internet packages import java.util.*; //Java Util packages public class SendMailBean { public String send(String p_from, String p_to, String p_subject, String p_message, String p_smtpServer) { // Gets the System properties Properties l_props = System.getProperties(); // Puts the SMTP server name to properties object l_props.put("mail.smtp.host",p_smtpServer); // Get the default Session using Properties Object Session l_session = Session.getDefaultInstance(l_props, null); l_session.setDebug(true); // Enable the debug mode
13. JSP – Mail sender bean – Page 2 try { MimeMessage l_msg = new MimeMessage(l_session); // Create a New message l_msg.setFrom(new InternetAddress(p_from)); // Set the From address l_msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(p_to, false)); l_msg.setSubject(p_subject); // Sets the Subject MimeBodyPart l_mbp = new MimeBodyPart(); l_mbp.setText(p_message); // Create the Multipart and its parts to it Multipart l_mp = new MimeMultipart(); l_mp.addBodyPart(l_mbp); // Add the Multipart to the message l_msg.setContent(l_mp); // Set the Date: header l_msg.setSentDate(new Date());
14. JSP – Mail sender bean – Page 3 // Send the message Transport.send(l_msg); // If here, then message is successfully sent. // Display Success message return “Mail sent”; } catch (Exception e) { return “Mail failed”; }
22. JSP and Database - II try { // Class.forName("com.mysql.jdbc.Driver").newInstance(); Class.forName("org.gjt.mm.mysql.Driver").newInstance(); conn = DriverManager.getConnection( "jdbc:mysql://localhost/jsp?user=xxx&password=xxx"); st = conn.createStatement(); rs = st.executeQuery("select * from employees"); while(rs.next()) { %> <TR><TD><%= rs.getString("lname_txt") %></TD> <TD><%= rs.getString("fname_txt") %></TD></TR> <% } %> </TABLE>
23. JSP and Database - III <% } catch (Exception ex) { ex.printStackTrace(); %> </TABLE> Ooops, something bad happened: <% } finally { if (rs != null) rs.close(); if (st != null) st.close(); if (conn != null) conn.close(); } %> </BODY> </HTML>
24. PHP and Database - I <? $username="username"; $password="password"; $database="your_database"; mysql_connect(localhost,$username,$password); @mysql_select_db($database) or die( "Unable to select database"); $query="SELECT * FROM contacts"; $result=mysql_query($query); $num=mysql_numrows($result); mysql_close();