Email sending with an attachment example

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This is email.properties properties file and these properties are used in the application.

mail.subject=SubjectGoesHere mail.smtp.host=smtp.sendgrid.net port=25 to.address=XXXXX@gmail.com cc.address=XXX@gmail.com,YYY@gmail.com bcc.address=XXX@gmail.com from.address=XXX@gmail.com username=username password=password mail.smtp.auth=true mail.smtp.starttls.enable=true attachment.mail.body=Hi, <br><br> Please find the file attached for the date : : APPEND_DATE. <br><br>Regards,<br> XXXXX

This is AppInit.java file having the source code to execute business logic.

package com.cv.mail; import java.util.Properties; import org.apache.log4j.Logger; /**  * @author Chandra Vardhan  *  */ public class AppInit {   private static final Logger LOGGER = Logger.getLogger(AppInit.class);   static Properties mailProperties = new Properties();   static {     mailProperties = readPropertiesFile();   }   private static Properties readPropertiesFile() {     Properties props = new Properties();     try {       LOGGER.debug("email.properties file read successfully...");       props.load(AppInit.class.getClassLoader().getResourceAsStream("email.properties"));     } catch (Exception e) {       LOGGER.error("Problem while reading email properties file : : " + e.getMessage());     }     return props;   } }

This is EmailUtils.java file having the source code to execute business logic.

package com.cv.mail; import java.io.File; import java.util.Properties; import javax.activation.DataHandler; import javax.activation.DataSource; import javax.activation.FileDataSource; import javax.mail.BodyPart; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Multipart; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; import org.apache.log4j.Logger; /**  * @author  Chandra Vardhan  *  */ public class EmailUtils {   private static final Logger LOGGER = Logger.getLogger(EmailUtils.class);   public static void sendEmail(final Properties emailProperties, String content, final File attachment) {     LOGGER.debug("In EmailUtils.sendEmail(- -) method");     try {       if (emailProperties != null && !emailProperties.isEmpty()) {         // Get the session object         final String userName = (String) emailProperties.get("username");         final String password = (String) emailProperties.get("password");         String log = "Mail with attachment sent successfully...";         Session session = Session.getInstance(emailProperties, new javax.mail.Authenticator() {           protected PasswordAuthentication getPasswordAuthentication() {             return new PasswordAuthentication(userName, password);           }         });         if (content != null) {           content = "<p><span face=\"Calibri\" style=\"font-family: Calibri;\"><font size=\"4\">" + content + "</font></p>";         }         Message message = new MimeMessage(session);         if (attachment != null) {           log = "Mail with attachment sent successfully...";           // Create the message part           BodyPart messageBodyPart = new MimeBodyPart();           // Create a multipar message           messageBodyPart.setContent(content, "text/html");           Multipart multipart = new MimeMultipart();           // Set text message part           multipart.addBodyPart(messageBodyPart);           // Part two is attachment           messageBodyPart = new MimeBodyPart();           DataSource source = new FileDataSource(attachment);           messageBodyPart.setDataHandler(new DataHandler(source));           messageBodyPart.setFileName(attachment.getName());           multipart.addBodyPart(messageBodyPart);           // Send the complete message parts           message.setContent(multipart);         } else {           message.setContent(content, "text/html");         }         log = "Mail sent successfully...";         message.setRecipients(Message.RecipientType.TO,             InternetAddress.parse((String) emailProperties.get("to.address")));         message.setRecipients(Message.RecipientType.CC,             InternetAddress.parse((String) emailProperties.get("cc.address")));         message.setRecipients(Message.RecipientType.BCC,             InternetAddress.parse((String) emailProperties.get("bcc.address")));         message.setFrom(new InternetAddress((String) emailProperties.get("from.address")));         message.setSubject((String) emailProperties.get("mail.subject"));         // Now set the actual message         Transport.send(message);         LOGGER.debug(log);       } else {         LOGGER.error("Please provide email properties. There are no email properties.");       }     } catch (     AddressException e) {       LOGGER.error("Problem while sending mail...");       e.printStackTrace();     } catch (MessagingException e) {       LOGGER.error("Problem while sending mail...");       e.printStackTrace();     }     LOGGER.debug("Out EmailUtils.sendEmail(- -) method");   } }

This is TestEmail.java file having the source code to execute business logic.

/**  *   */ package com.cv.mail; import java.io.File; import java.io.IOException; import java.util.Date; /**  * @author Chandra Vardhan  *  */ public class TestEmail {   /**    * @param args    */   public static void main(String[] args) {     //Send normal email     EmailUtils.sendEmail(AppInit.mailProperties,"Content", null);          File file = new File("test.txt");     try {       file.createNewFile();     } catch (IOException e) {       e.printStackTrace();     }     String body = AppInit.mailProperties.getProperty("attachment.mail.body");     body = body.replace("APPEND_DATE", ""+new Date());     //Send attached mail         EmailUtils.sendEmail(AppInit.mailProperties,body, file);      } }

This is pom.xml file having the entries of dependency jars and information to build the application .

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.cv.email</groupId> <artifactId>EmailSending</artifactId> <version>1.0</version> <packaging>jar</packaging> <name>Maven Quick Start Archetype</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4</version> </dependency> </dependencies> </project>

This is log4j.properties file having the entries for logging the information into the console/file.

#By default enabling Console appender # Root logger option log4j.rootLogger=INFO, stdout # Redirect log messages to console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n # Redirect log messages to a log file #log4j.appender.file=org.apache.log4j.RollingFileAppender #log4j.appender.file.File=C:\servlet-application.log #log4j.appender.file.MaxFileSize=5MB #log4j.appender.file.MaxBackupIndex=10 #log4j.appender.file.layout=org.apache.log4j.PatternLayout #log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n