Imap

Whenever I encounter a situation where I have to mix a blend of different services and endpoints and apply one or more of the traditional enterprise integration patterns then Apache Camel often is my weapon of choice. I simply love how easy it is to set up some datasources, add some routing magic, data transformers, load balancers, content enrichers and enjoy the result. Another thing that I’m beginning to love is Scala and so this is the perfect time to write an article about using Scala and Apache Camel together. ...

Having written some e-mail handling, sending or receiving library you’d like to run some integration tests against a real mail server? Then GreenMail might help you out here .. the framework is not quite new on the market but it is really easy to setup IMAP,SMTP or POP3 services with it and it comes with some helpful libraries making your life a bit easier here. That’s why I’ve come to the idea to share some examples for setting up different server instances, creating user accounts and – at last – fetching and validating e-mails… ...

Building a simple IMAP Client that displays the subject of the messages in the “inbox” Folder using Maven (I just like Maven). Project Setup / Maven Create a new Maven project mvn archetype:create -DgroupId=com.hascode.imap -DartifactId=imap-client Edit your pom.xml and add some dependencies <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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.hascode.imap</groupId> <artifactId>imap-client</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.8.1</version> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4.2</version> </dependency> </dependencies> </project> Creating the E-Mail Client Create a package .. something like com.hascode.imap.client ;) Create a simple mail client using javax.mail in a class named ImapClient package com.hascode.imap.client; import javax.mail.Folder; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Store; public class ImapClient { private Session session = null; private Store store = null; private String host = null; private String userName = null; private String password = null; public ImapClient(String host, String userName, String password){ this.host = host; this.userName = userName; this.password = password; } public boolean getMail() throws MessagingException { session = Session.getDefaultInstance(System.getProperties(),null); // session.setDebug(true); System.out.println("get store.."); store = session.getStore("imaps"); System.out.println("connect.."); store.connect(this.host, this.userName, this.password); System.out.println("get default folder .."); Folder folder = store.getDefaultFolder(); folder = folder.getFolder("inbox"); folder.open(Folder.READ_ONLY); System.out.println("reading messages.."); Message[] messages = folder.getMessages(); for(Message m:messages){ System.out.println(m.getSubject()); } return false; } } ...