I want to send an email in Java.

I was looking for what to do ... Apache Commons Email looked good, so I decided to use it.

I also use Apache Commons Lang in my project I think this is more unified than putting in a strange library.

How to use ①

There is Sample code, so copy it for the time being.

Email email = new SimpleEmail();
email.setAuthenticator(new DefaultAuthenticator("username", "password"));
email.setFrom("[email protected]");
email.setMsg("This is a test mail ... :-)");
email.addTo("[email protected]");

Looking at the sample code, it is sent using google's mail server. So, using your Google information, modify the following. --ʻUsername ........... User ID when logging in to Google --password ........... Password for logging in to Google --ʻ[email protected] ..... Google email address --" [email protected] " ...... Destination email address (* Don't use someone else's email address !!!)

And execute.

only this! simple! Great! Congratulations!

How to use ②: Attach attachment

Email email = new SimpleEmail();

If this is the case, the file cannot be attached. To attach a file ..... there is also a sample code.

// Create the attachment
EmailAttachment attachment = new EmailAttachment();
attachment.setPath("mypictures/john.jpg ");
attachment.setDescription("Picture of John");

// Create the email message
MultiPartEmail email = new MultiPartEmail();
email.addTo("[email protected]", "John Doe");
email.setFrom("[email protected]", "Me");
email.setSubject("The picture");
email.setMsg("Here is the picture you wanted");

// add the attachment

// send the email

A very simple configuration that just specifies the path where the file is located. Great.

However, with this, only one file can be attached. How can I attach multiple files? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? When I looked it up, I found an article like this. http://d.hatena.ne.jp/hiro_nemu/20091109/1257760767

It seems that you just need to new as much as you want to attach and ʻemail.attach (attachment)`. Great.


Apache Commons Great.

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