前言

在我們?nèi)粘９ぷ髦校]件發(fā)送服務(wù)經(jīng)常會(huì)用到，我們常用的java郵件服務(wù)實(shí)現(xiàn)方案有：java原生自帶的javamail、apache commons mail工具包、spring mail。但是個(gè)人使用這么久而言，感覺(jué)使用起來(lái)都不太順手，也略顯復(fù)雜

在此推薦一個(gè)簡(jiǎn)單易用的類庫(kù)simple-java-mail

github地址: http://www.simplejavamail.org

下面我會(huì)介紹一下這個(gè)mail工具類的基本用法，不過(guò)基本都是來(lái)自于官網(wǎng)，隨后我會(huì)基于這個(gè)mail工具類去封裝一個(gè)基本通用的郵件服務(wù)。

maven引入

<dependency> <groupId>org.simplejavamail</groupId> <artifactId>simple-java-mail</artifactId> <version>4.2.3-java6-release</version></dependency>

例子

發(fā)送一封簡(jiǎn)易郵件

寫(xiě)法1 Builder模式：

Email email = new EmailBuilder().from('Michel Baker', '[email protected]').to('mom', '[email protected]').to('dad', '[email protected]').subject('My Bakery is finally open!').text('Mom, Dad. We did the opening ceremony of our bakery!!!').build();

new Mailer('server', 25, 'username', 'password').sendMail(email);

寫(xiě)法二 常規(guī)模式：

Email email = new Email();

email.setFromAddress('Michel Baker', '[email protected]');email.addRecipient('mom', '[email protected]', RecipientType.TO);email.addRecipient('dad', '[email protected]', RecipientType.TO);email.setSubject('My Bakery is finally open!');email.setText('Mom, Dad. We did the opening ceremony of our bakery!!!');

new Mailer('server', 25, 'username', 'password').sendMail(email);

和spring結(jié)合使用

<bean class='org.simplejavamail.mailer.Mailer'> <constructor-arg value='server' /> <constructor-arg value='25' /> <constructor-arg value='username' /> <constructor-arg value='password' /></bean>@Autowired Mailer inhouseMailer; inhouseMailer.sendMail(email);inhouseMailer.sendMail(anotherEmail);

添加多個(gè)接收者

//添加多個(gè)接收者email.addRecipients(yourRecipient1, yourRecipient2...);//也可以通過(guò)逗號(hào)“,”分割多個(gè)抄送人String list = '[email protected],[email protected];[email protected]';emailNormal.addRecipients(list, RecipientType.BCC);

builder模式：.to(yourRecipient1, yourRecipient2...).bcc('[email protected],[email protected];[email protected]')....build();

支持異步發(fā)送

// 第二個(gè)參數(shù)是true則是異步發(fā)送，false則是同步發(fā)送mailer.sendMail(email, true);

配置SSL或TLS

Email email = new Email();

mailer.sendMail(email, TransportStrategy.SMTP_PLAIN); // 此為默認(rèn)值，不加嵌套任何傳輸協(xié)議mailer.sendMail(email, TransportStrategy.SMTP_SSL);mailer.sendMail(email, TransportStrategy.SMTP_TLS);

我們也可以在初始化郵件服務(wù)器配置時(shí)聲明傳輸協(xié)議

new Mailer('smtp.gmail.com', 25, 'your user', 'your password', TransportStrategy.SMTP_TLS).sendMail(email);new Mailer('smtp.gmail.com', 587, 'your user', 'your password', TransportStrategy.SMTP_TLS).sendMail(email);new Mailer('smtp.gmail.com', 465, 'your user', 'your password', TransportStrategy.SMTP_SSL).sendMail(email);

發(fā)送附件

Email email = new Email();

email.addAttachment('dresscode.txt', new ByteArrayDataSource('Black Tie Optional', 'text/plain'));email.addAttachment('location.txt', 'On the moon!'.getBytes(Charset.defaultCharset()), 'text/plain');

// 當(dāng)然，你可以傳輸任何文件格式的附件

email.addAttachment('invitation.pdf', new FileDataSource('invitation_v8.3.pdf'));

內(nèi)容嵌套圖片

Email email = new Email();

email.addEmbeddedImage('smiley', new FileDataSource('smiley.jpg'));

String base64String = 'iVBORw0KGgoAAAANSUhEUgAAA ...snip';email.addEmbeddedImage('thumbsup', parseBase64Binary(base64String), 'image/png');

// 圖片需要在html文本中通過(guò)cid:xxxx,的方式引用<p>Let’s go!</p><br/><p>Smile!</p>

自定義發(fā)送頭

Email email = new Email();

email.addHeader('X-Priority', 2);email.addHeader('X-MC-GoogleAnalyticsCampaign', 'halloween_sale');email.addHeader('X-MEETUP-RECIP-ID', '71415272');email.addHeader('X-my-custom-header', 'foo');

驗(yàn)證郵箱合法性

具體使用的工具類是email-rfc2822-validator

github地址：https://github.com/bbottema/email-rfc2822-validator

//經(jīng)過(guò)使用發(fā)現(xiàn)，貌似只是用正則表達(dá)式去驗(yàn)證郵箱是否合法EmailAddressValidator.isValid('[email protected]',EmailAddressCriteria.RFC_COMPLIANT);EmailAddressValidator.isValid('[email protected]',EnumSet.of(EmailAddressCriteria.ALLOW_QUOTED_IDENTIFIERS, EmailAddressCriteria.ALLOW_PARENS_IN_LOCALPART));

使用代理發(fā)送

// anonymous proxynew Mailer(serverConfig, new ProxyConfig('proxy.host.com', 1080));

// authenticated proxynew Mailer(serverConfig, new ProxyConfig('proxy.host.com', 1080, 'proxy username', 'proxy password'));

總結(jié)

此工具類方便易用，簡(jiǎn)潔明了，而且支持Builder模式鏈?zhǔn)秸{(diào)用。有興趣的同學(xué)可以嘗試使用，個(gè)人感覺(jué)比原生mail，spring mail等易用，更多用法請(qǐng)自行查看官網(wǎng)例子。至于一開(kāi)始說(shuō)到的封裝通用的郵件服務(wù)，這個(gè)由于時(shí)間關(guān)系，我放到下一次再實(shí)現(xiàn)。謝謝大家的支持，如果此文對(duì)你有所幫助，請(qǐng)點(diǎn)個(gè)贊，謝謝。

https://github.com/bbottema/simple-java-mail/

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持好吧啦網(wǎng)。