Format HTML Styled Email using Java

This article is for creating simple HTML Styled Email using Java. Its difficult to manage HTML code in java. It will be clumsy when its needed to place some data in that HTML code. To avoid all these problems , I have created 3 simple steps

Prepare HTML mock-up of Email Body
Make your data ready in POJO class
Place your data in HTML code using TemplateMatcher

Prepare HTML mock-up

First of all, prepare your HTML Email mock-up by using any online HTML editor (codepen, cssdeck etc). Lets send student's progress report as email. Find below mock-up and HTML code for Email body

Mock-up

HTML Code

<div style="padding:20px">
<h2>Progress Report</h2>
<b>Student Name</b> : Srinivas Dasari<br/>
<b>Role No</b> : 690752021<br/>
<br/>
<table border="1" style="border-collapse:collapse;text-align:center">
  <tr>
    <th style="padding:5px">Subject</th>
    <th style="padding:5px">Grade</th>
  </tr>
  <tr>
    <td>Mathmatics</td>
    <td  style="color:blue">A</td>
  </tr>
   <tr>
    <td>Science</td>
    <td style="color:orange">C</td>
  </tr>
  <tr>
    <td>Economics</td>
    <td style="color:red">D</td>
  </tr> 
</table>
</div>

Make your Data ready

To fill above mock-up we need student name, id and marks. Lets create pojo with those fields.

public class ProgressReport
{
    private String rollNo;

    private String mathmatics;

    private String name;

    private String economics;

    private String science;

    public String getRollNo ()
    {
        return rollNo;
    }

    public void setRollNo (String rollNo)
    {
        this.rollNo = rollNo;
    }

    public String getMathmatics ()
    {
        return mathmatics;
    }

    public void setMathmatics (String mathmatics)
    {
        this.mathmatics = mathmatics;
    }

    public String getName ()
    {
        return name;
    }

    public void setName (String name)
    {
        this.name = name;
    }

    public String getEconomics ()
    {
        return economics;
    }

    public void setEconomics (String economics)
    {
        this.economics = economics;
    }

    public String getScience ()
    {
        return science;
    }

    public void setScience (String science)
    {
        this.science = science;
    }
}

TemplateMatcher Introduction

To use TemplateMatcher, you need to have jlibs-core jar in build-path. You can download this jar from https://code.google.com/p/jlibs/downloads/list

Create string template using TemplateMatcher
Use that template in strings
Replace the template with suitable data

import jlibs.core.util.regex.TemplateMatcher;

String msg = "Student Name : ${name} \n Student ID : ${id} ";
TemplateMatcher matcher = new TemplateMatcher("${", "}");
Map<String, String> vars = new HashMap<String, String>();
vars.put("name", "srinivas");
vars.put("id", "21");
System.out.println(matcher.replace(msg, vars));

Output will be

Student Name : srinivas 
Student ID : 21

Place Data in your HTML code

Its time to create templates in HTML and replace with pojo data. Lets create templates in HTML code.

<div style="padding:20px">
<h2>Progress Report</h2>
<b>Student Name</b> : ${name}<br/>
<b>Role No</b> : ${id}<br/>
<br/>
<table border="1" style="border-collapse:collapse;text-align:center">
  <tr>
    <th style="padding:5px">Subject</th>
    <th style="padding:5px">Grade</th>
  </tr>
  <tr>
    <td>Mathmatics</td>
    <td  style="color:blue">${mathmatics}</td>
  </tr>
   <tr>
    <td>Science</td>
    <td style="color:orange">${science}</td>
  </tr>
  <tr>
    <td>Economics</td>
    <td style="color:red">${economics}</td>
  </tr> 
</table>
</div>

Use Convert HTML or Text to Javascript or Java variable - Online online tool to convert HTML into Java string, it is easier way.
Final code will be

ProgressReport pr = new ProgressReport();
pr.setName("srinivas");
pr.setRollNo("21");
pr.setMathmatics("A");
pr.setScience("C");
pr.setEconomics("D");
StringBuilder body = new StringBuilder(); 
body.append("<div style=\"padding:20px\">")
     .append("<h2>Progress Report</h2>")
     .append("<b>Student Name</b> : ${name}<br/>")
     .append("<b>Role No</b> : ${id}<br/>")
     .append("<br/>")
     .append("<table border=\"1\" style=\"border-collapse:collapse;text-align:center\">")
     .append("  <tr>")
     .append("    <th style=\"padding:5px\">Subject</th>")
     .append("    <th style=\"padding:5px\">Grade</th>")
     .append("  </tr>")
     .append("  <tr>")
     .append("    <td>Mathmatics</td>")
     .append("    <td  style=\"color:blue\">${mathmatics}</td>")
     .append("  </tr>")
     .append("   <tr>")
     .append("    <td>Science</td>")
     .append("    <td style=\"color:orange\">${science}</td>")
     .append("  </tr>")
     .append("  <tr>")
     .append("    <td>Economics</td>")
     .append("    <td style=\"color:red\">${economics}</td>")
     .append("  </tr> ")
     .append("</table>")
     .append("</div>");
TemplateMatcher matcher = new TemplateMatcher("${", "}");
Map<String, String> vars = new HashMap<String, String>();
vars.put("name", pr.getName());
vars.put("id", pr.getRollNo());
vars.put("mathmatics", pr.getMathmatics());
vars.put("science", pr.getScience());
vars.put("economics", pr.getEconomics());
String emailBody = matcher.replace(body.toString(), vars);

Java function to Send Email

Just send email using below java function

    public static void sendMail(String mail,String sub,String mess) throws AddressException, MessagingException {
        Logger.info(className, "entering sendMail "+mail);
        Properties props = new Properties();
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");
 
        Session session = Session.getDefaultInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("enter your gmail here","enter your password here");
                }
            });
 
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress("enter your email here"));
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(mail));
            message.setSubject(sub);
            message.setContent(mess,
                    "text/html" );
            Transport.send(message);
        Logger.info(className, "leaving sendMail");
    }

Thank you for reading. I hope it helps

12 comments:

Unknown15 July 2018 at 23:40
Here we will read about the styled email using java which is a different technique. In this way we can read the things as rushmyessay.com review devlopment and other bloggimng benefits. Gamers will like this blog so much because they are connected with java.
Jessica Wil11 December 2018 at 21:36
A quality cleaning kit can extend the longevity of your game discs. When purchasing a used game, it could be in any kind of condition. These kits can help you restore your games to working condition, even if they used to be really grungy. Make sure you do your homework to see which one is a good fit for you. There are several options available when it comes to which kit you purchase. https://hackeroffice.com/
Muhammad Hassan19 April 2019 at 05:31
I am hoping the same best effort from you in the future as well. In fact your creative writing skills has inspired me. Email List
Muhammad Rafey3 July 2019 at 11:02
You there, this is really good post here. Thanks for taking the time to post such valuable information. Quality content is what always gets the visitors coming. buy email list
morphigo12 September 2019 at 19:18
live net tv apk
live nettv app
framerootapk apk
framerootapk app
fmwhatsapp apk
fmwhatsapp app
Muhammad Hassan24 June 2020 at 09:56
The article looks magnificent, but it would be beneficial if you can share more about the suchlike subjects in the future. Keep posting. veja aqui como entrar no Hotmail.com da Microsoft
Muhammad Hassan4 August 2020 at 03:53
This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value of providing a quality resource for free. hotmail login
mastoom10 September 2020 at 04:22
Thanks for the blog loaded with so many information. Stopping by your blog helped me to get what I was looking for. LinkedIn Scraper
Prince3 October 2020 at 10:36
I am happy to find your distinguished way of writing the post. Now you make it easy for me to understand and implement the concept. Thank you for the post. Email Extractor - Online tool for extracting any email address
Ghazi11 November 2020 at 02:26
i read a lot of stuff and i found that the way of writing to clearifing that exactly want to say was very good so i am impressed and ilike to come again in future.. email extractor vs atomic
Unknown12 November 2020 at 11:05
Excellent to be visiting your blog again, it has been months for me. Rightly, this article that I've been served for therefore long. I want this article to finish my assignment within the faculty, and it has the same topic together with your article. Thanks for the ton of valuable help, nice share. what is gmass in gmail

→	Convert XML or JSON to Java Pojo Classes
→	Change Icon Color Online

SodhanaLibrary