In this post we will learn how To, Cc and Bcc mails are sent and also how the file is attached to the mail. Some jar files are available in java for the development of mails, which is javax.mail jar file, as well as a jar named SendMailA143mk, download both the jar file and the names of the jar SendMailA143mk in which two methods / functions have been used, the names of the methods are as follows:    

There are some parameters in both the methods, which we initialize by creating and object like this.

  package testSendMailJar; import SendMailA143mk.SendMailA143mk; public class testmail { @SuppressWarnings("unused") public static void main(String[] args) throws Exception { String noReplayEmailID="noreplyMail@mailDomen.com"; String noReplayEmailPass="mailPassword"; String host="smtp.office365.com"; String port="587"; String sentTomail="toMail@mailDomen.com"; String sentToCCmail="ccMail@mailDomen.com"; String sentToBCCmail="bccMail@mailDomen.com"; String Subject="SMTP Implementation Using Java"; String bodyText=" Hi A143mk blogs Test Mail. Thanks. "; String PathFile="D:\\logo.png"; SendMailA143mk getJarfielF=new SendMailA143mk(); String returnSuWithFileApth=getJarfielF.SendMaleWPathFile(noReplayEmailID, noReplayEmailPass, host, port, sentTomail, sentToCCmail, sentToBCCmail, Subject, bodyText, PathFile); System.out.println("File and Email Send Success!"+returnSuWithFileApth); String returnSuWithMailBody=getJarfielF.SendMaleWBody(noReplayEmailID, noReplayEmailPass, host, port, sentTomail, sentToCCmail, sentToBCCmail, Subject, bodyText); System.out.println("Mail Body and Email Send Success!"+returnSuWithFileApth); } }

Important Information: We develop/implement this type of web application or other user application in online platform like How to send To, Cc and Bcc mails to online user providing security and also we are able to send email to user through OTP in this development Whether or not your personal information such as password/email OTP is neither in the database of the online platform nor in the possession of anyone else. By this we identify the authenticity of the user.

The Send Email Application has been created Using java with jdbc:oracle DataBase,with Multiple File convert to 7Zip File and attachments Through the Email .
Project  Folder and Jar File Position: 



Properties File: "dataBase.properties" is file Name
Application Code:
1. Zip7AutoTOEmail.java
package zip7autotoemail; import java.io.File; import java.io.FileInputStream; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Properties; import static zip7autotoemail.ZipCompress.muliZip; public class Zip7AutoTOEmail { /** * * @author manoj */ public static void main(String[] args) throws IOException { Properties prop = new Properties(); String DATABASE_URL = ""; String DATABASE_USER = ""; InputStream input; String DATABASE_PASSWORD = ""; ResultSet rs = null; Connection con = null; String TABLE_NAME = ""; String TABLE_FILE_NAME = ""; String TABLE_TO_EMAIL = ""; String EMAIL_USER_NAME = ""; String EMAIL_USER_PASSWORD = ""; String EMAIL_HOST = ""; String EMAIL_PORT = ""; String EMAIL_SUBJECT = ""; String EMAIL_TEXTBODY = ""; String ATTACHED_FILE_URL = ""; String ATTACHED_FILE7ZIP_URL = ""; String FILE_EXTATION = ""; String FILE_Name = ""; String result = ""; PrintWriter out = null; Map<String, String> map = new HashMap<String, String>(); SendMail sendTo = new SendMail(); //Create sending Log file Name EmailLogFile.txt out = new PrintWriter(new FileWriter("EmailLogFile.txt", true), true); try { System.out.print("Precessing......\n"); // Create properties File.. input = new FileInputStream("dataBase.properties"); prop.load(input); /*Database Connection*/ DATABASE_URL = prop.getProperty("DATABASE_URL"); DATABASE_USER = prop.getProperty("DATABASE_USER"); DATABASE_PASSWORD = prop.getProperty("DATABASE_PASSWORD"); /*Database Table Connection*/ TABLE_NAME = prop.getProperty("TABLE_NAME"); TABLE_FILE_NAME = prop.getProperty("TABLE_FILE_NAME"); TABLE_TO_EMAIL = prop.getProperty("TABLE_TO_EMAIL"); /*Email Connection With File Name*/ EMAIL_USER_NAME = prop.getProperty("EMAIL_USER_NAME"); EMAIL_USER_PASSWORD = prop.getProperty("EMAIL_USER_PASSWORD"); EMAIL_HOST = prop.getProperty("EMAIL_HOST"); EMAIL_PORT = prop.getProperty("EMAIL_PORT"); EMAIL_SUBJECT = prop.getProperty("EMAIL_SUBJECT"); EMAIL_TEXTBODY = prop.getProperty("EMAIL_TEXTBODY"); ATTACHED_FILE_URL = prop.getProperty("ATTACHED_FILE_URL"); ATTACHED_FILE7ZIP_URL = prop.getProperty("ATTACHED_FILE7ZIP_URL"); String sql = "Select " + TABLE_FILE_NAME + "," + TABLE_TO_EMAIL + " from " + TABLE_NAME +" ORDER by "+ TABLE_FILE_NAME; DriverManager.registerDriver(new oracle.jdbc.OracleDriver()); con = DriverManager.getConnection(DATABASE_URL, DATABASE_USER, DATABASE_PASSWORD); Statement st = con.createStatement(); rs = st.executeQuery(sql); String Attachfile = ""; String AttachfileZip = ""; while (rs.next()) { if(rs.getString(TABLE_TO_EMAIL)!=null && !rs.getString(TABLE_TO_EMAIL).trim().isEmpty()){ map.put(rs.getString(TABLE_FILE_NAME), rs.getString(TABLE_TO_EMAIL)); }else{ out.println(rs.getString(TABLE_FILE_NAME)+" IS EMAIL NOT FOUND IN DATEBASE"); } } // get the property value and print it out File[] files = new File(ATTACHED_FILE_URL).listFiles(); Arrays.sort(files); String fileName = ""; String toEmail = ""; for(String fileNameDb: map.keySet()){ fileName = fileNameDb; toEmail = map.get(fileNameDb); //System.out.println(fileNameDb+" - " + map.get(fileNameDb)); if(toEmail!=null && !toEmail.trim().isEmpty() ){ List<string> fileAnme = new ArrayList<string>(); for (File file : files) { if (file.isFile()) { FILE_EXTATION = file.getName().substring(4, 12); FILE_Name = file.getName().substring(0, 4); if (FILE_Name.equalsIgnoreCase(fileName)) { Attachfile = ATTACHED_FILE_URL + file.getName(); fileAnme.add(file.getName()); // convert multiple files to 7Zip Function. muliZip(fileAnme, ATTACHED_FILE_URL, ATTACHED_FILE7ZIP_URL, fileName); } } } File[] files7Zip = new File(ATTACHED_FILE7ZIP_URL).listFiles(); for (File filezip : files7Zip) { if (filezip.isFile()) { FILE_Name = filezip.getName().substring(0, 4); int lastIndex = filezip.getName().lastIndexOf('.'); String str = filezip.getName().substring(lastIndex); if (FILE_Name.equalsIgnoreCase(fileName) && str.equalsIgnoreCase(".zip")) { AttachfileZip = ATTACHED_FILE7ZIP_URL + filezip.getName(); System.out.println(AttachfileZip); // Send multiple files attachments through SendToEmail Function. result =sendTo.SendToEmail(EMAIL_USER_NAME, EMAIL_USER_PASSWORD, EMAIL_HOST, EMAIL_PORT, toEmail, EMAIL_SUBJECT, EMAIL_TEXTBODY, AttachfileZip); if (result.equalsIgnoreCase("success")) { out.println("File Name is: " + filezip.getName() + " Email ID is: " + toEmail + " -> Mail Status is Success! \n And Send DateTime:" + new Date()); File indexzip = new File(AttachfileZip); if (indexzip.exists()) { indexzip.delete(); } } else { out.println("File Name is: " + filezip.getName() + " Email ID is: " + toEmail + " -> Mail Status is Failed! \n And Send DateTime:" + new Date()); } } } } } } con.close(); } catch (Exception ex) { out.println(ex.getMessage() + " Log DateTime is : " + new Date()); } out.flush(); out.close(); } }
2. ZipCompress.java
package zip7autotoemail; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.Arrays; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; /** * * @author manoj */ public class ZipCompress { int i=0; public static void muliZip(List<string> srcFiles, String Pathpdf, String zipPath, String fileName) throws Exception{ FileOutputStream fos = new FileOutputStream(zipPath+fileName+".zip"); ZipOutputStream zipOut = new ZipOutputStream(fos); for (String srcFile : srcFiles) { File fileToZip = new File(Pathpdf+srcFile); FileInputStream fis = new FileInputStream(fileToZip); ZipEntry zipEntry = new ZipEntry(fileToZip.getName()); zipOut.putNextEntry(zipEntry); byte[] bytes = new byte[1024]; int length; while((length = fis.read(bytes)) >= 0) { zipOut.write(bytes, 0, length); } fis.close(); } zipOut.close(); fos.close(); } }
3. SendMail.java
package zip7autotoemail; 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.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; /** * * @author manoj */ public class SendMail { String success=""; int i=0; public String SendToEmail(String username, String password, String host, String port, String sentTomail, String Subject, String bodyText, String PathFile) throws Exception{ Properties props = new Properties(); props.put("mail.smtp.starttls.enable", "true"); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.host", host); props.put("mail.smtp.port", port); String filePath = PathFile; Session session = Session.getInstance(props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }); try { if (sentTomail != null && sentTomail.matches("^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$")) { Message message = new MimeMessage(session); message.setFrom(new InternetAddress(username)); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(sentTomail)); message.setSubject(Subject); message.setText(bodyText); BodyPart messageBodyPart1 = new MimeBodyPart(); messageBodyPart1.setText(bodyText); // 4) create new MimeBodyPart object and set DataHandler object to this object MimeBodyPart messageBodyPart2 = new MimeBodyPart(); DataSource source = new FileDataSource(filePath); messageBodyPart2.setDataHandler(new DataHandler(source)); messageBodyPart2.setFileName(filePath); // 5) create Multipart object and add MimeBodyPart objects to this object Multipart multipart = new MimeMultipart(); multipart.addBodyPart(messageBodyPart1); multipart.addBodyPart(messageBodyPart2); message.setContent(multipart); Transport tr = session.getTransport("smtp"); tr.connect(host, username, password); tr.sendMessage(message, message.getAllRecipients()); tr.close(); success = "success"; System.out.println(success +"send ZIP Count :"+i++); } else { success = "Unable To Send or Some Error"; } } catch (MessagingException e) { success = RuntimeException(e); } return success; } private String RuntimeException(MessagingException e) { throw new RuntimeException(e); } }