JavaMail Exchange Authentication

问题:

I'm trying to use Exchange authentication from my app using JavaMail to do this. Could some one give me a guide to do this? After authentication I need to send mails that's the main reason that I'm using JavaMail. All the links that I found talks about problems with this but I think this must be an easy task to do from Java. Thanks in advance.

回答1:

After authentication I need to send mails

The below example works fine here with Exchange servers:

Properties properties = new Properties();
properties.put("mail.transport.protocol", "smtp");
properties.put("mail.smtp.host", "mail.example.com");
properties.put("mail.smtp.port", "2525");
properties.put("mail.smtp.auth", "true");

final String username = "username";
final String password = "password";
Authenticator authenticator = new Authenticator() {
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(username, password);
    }
};

Transport transport = null;

try {
    Session session = Session.getDefaultInstance(properties, authenticator);
    MimeMessage mimeMessage = createMimeMessage(session, mimeMessageData);
    transport = session.getTransport();
    transport.connect(username, password);
    transport.sendMessage(mimeMessage, mimeMessage.getAllRecipients());
} finally {
    if (transport != null) try { transport.close(); } catch (MessagingException logOrIgnore) {}
}

回答2:

It is a good question! I have solved this issue.

First, you should import the jar ews-java-api-2.0.jar. if you use maven, you would add the following code into your pom.xml

<dependency>
  <groupId>com.microsoft.ews-java-api</groupId>
  <artifactId>ews-java-api</artifactId>
  <version>2.0</version>
</dependency>

Secondly, you should new java class named MailUtil.java.Some Exchange Servers don't start SMTP service by default, so we use Microsoft Exchange WebServices(EWS) instead of SMTP service.

MailUtil.java

package com.spacex.util;


import microsoft.exchange.webservices.data.core.ExchangeService;
import microsoft.exchange.webservices.data.core.enumeration.misc.ExchangeVersion;
import microsoft.exchange.webservices.data.core.service.item.EmailMessage;
import microsoft.exchange.webservices.data.credential.ExchangeCredentials;
import microsoft.exchange.webservices.data.credential.WebCredentials;
import microsoft.exchange.webservices.data.property.complex.MessageBody;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.net.URI;

/**
 * Exchange send email util
 *
 * @author vino.dang
 * @create 2017/01/08
 */
public class MailUtil {

    private static Logger logger = LoggerFactory.getLogger(MailUtil.class);



    /**
     * send emial
     * @return
     */
    public static boolean sendEmail() {

        Boolean flag = false;
        try {
            ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP1); // your server version
            ExchangeCredentials credentials = new WebCredentials("vino", "abcd123", "spacex"); // change them to your email username, password, email domain
            service.setCredentials(credentials);
            service.setUrl(new URI("https://outlook.spacex.com/EWS/Exchange.asmx")); //outlook.spacex.com change it to your email server address
            EmailMessage msg = new EmailMessage(service);
            msg.setSubject("This is a test!!!"); //email subject
            msg.setBody(MessageBody.getMessageBodyFromText("This is a test!!! pls ignore it!")); //email body
            msg.getToRecipients().add("[e-mail]"); //email receiver
//        msg.getCcRecipients().add("[e-mail]"); // email cc recipients
//        msg.getAttachments().addFileAttachment("D:\\Downloads\\EWSJavaAPI_1.2\\EWSJavaAPI_1.2\\Getting started with EWS Java API.RTF"); // email attachment
            msg.send(); //send email
            flag = true;
        } catch (Exception e) {
            e.printStackTrace();
        }

        return flag;

    }


    public static void main(String[] args) {

        sendEmail();

    }
}

if you want to get more detail, pls refer to https://github.com/OfficeDev/ews-java-api/wiki/Getting-Started-Guide

回答3:

Works for me:

Properties props = System.getProperties();
// Session configuration is done using properties. In this case, the IMAP port. All the rest are using defaults
props.setProperty("mail.imap.port", "993");
// creating the session to the mail server
Session session = Session.getInstance(props, null);
// Store is JavaMails name for the entity holding the mails
Store store = session.getStore("imaps");
// accessing the mail server using the domain user and password
store.connect(host, user, password);
// retrieving the inbox folder
Folder inbox = store.getFolder("INBOX");

This code is based on the sample code arrives with the download of java mail.

回答4:

Microsoft released an open sourced API for connecting to Exchange Web Service

https://github.com/OfficeDev/ews-java-api

回答5:

Exchange does not start SMTP service by default, so we can't use SMTP protocol to connect to Exchange server and try to send email. BalusC can work fine with the above code because your mailserver administrator enabled SMTP service on Exchange.while in most cases SMTP is disabled.I am also looking for solution.

This is the best answer among what i have found, but what a frustration is that you have to pay for it after 60 days.

回答6:

Some Exchange servers don't have smtp protocol enabled.
In these cases you can use DavMail.

回答7:

Tried the ews-java-api, as mentioned by Populus on a previous comment. It was done on a Java SE environment with jdk1.6 and it works like a charm.
These are the libs that I had to associate with my sample:

• commons-cli-1.2.jar
• commons-codec-1.10.jar
• commons-lang3-3.1.jar
• commons-logging-1.2.jar
• ews-java-api-2.0.jar
• httpclient-4.4.1.jar
• httpcore-4.4.5.jar

Hope it helps.