- index.html will get the input from user
- MailApp.java servlet file will control the request and response. It will invoke send() of SendMail class that we have created to send the mail.
- SendMail.java, a java class that contains method to send mail.
index.html
<form action="mail" method="post"> To:<input type="text" name="to" /><br/> Subject:<input type="text" name="subject" /><br/> Message:<input type="text" name="message" /><br/> Your Email id:<input type="text" name="user" ><br/> Password<;input type="password" name="pass" /><br/> <input type="submit" value="send" /> </form>
MailApp.java
import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class MailApp extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String to = request.getParameter("to"); String subject = request.getParameter("subject"); String message = request.getParameter("message"); String user = request.getParameter("user"); String pass = request.getParameter("pass"); SendMail.send(to,subject, message, user, pass); out.println("Mail send successfully"); } }
SendMail.java
import java.io.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; public class SendMail { public static void send(String to, String sub, String msg, final String user,final String pass) { //create an instance of Properties Class Properties props = new Properties(); /* Specifies the IP address of your default mail server for e.g if you are using gmail server as an email sever you will pass smtp.gmail.com as value of mail.smtp host. As shown here in the coding. Change accordingly, if your email id is not an gmail id*/ props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.smtp.port", "587"); //this is optional props.put("mail.smtp.auth", "true"); props.put("mail.smtp.starttls.enable", "true"); /*Pass Properties object(props) and Authenticator object for authentication to Session instance */ Session session = Session.getInstance(props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(user,pass); } }); try { /* Create an instance of MimeMessage, it accept MIME types and headers */ MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(user)); message.addRecipient(Message.RecipientType.TO,new InternetAddress(to)); message.setSubject(sub); message.setText(msg); /* Transport class is used to deliver the message to the recipients */ Transport.send(message); }catch(Exception e) { e.printStackTrace(); } } }
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <servlet> <servlet-name>mail</servlet-name> <servlet-class>MailApp</servlet-class> </servlet> <servlet-mapping> <servlet-name>mail</servlet-name> <url-pattern>/mail</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app>
- Java Servlets Overview
- Servlet Life Cycle
- Servlet Example
- Difference between ServletConfig and ServletContext
- Difference between GenericServlet and HttpServlet
- What is web application?
- Advantages of Servlets over CGI
- GenericServlet Example
- RequestDispatcher Example
- ServletConfig
- ServletContext
- Servlet Filter Example
- Database Access Example using Sevlet
- File Uploading Example using Servlet