10 分鐘實(shí)現(xiàn) Spring Boot 發(fā)送郵件功能

    @Autowired    private JavaMailSenderImpl mailSender;
    public void sendMail() throws MessagingException {
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();        simpleMailMessage.setFrom("[email protected]");        simpleMailMessage.setTo("[email protected]");        simpleMailMessage.setSubject("Happy New Year");        simpleMailMessage.setText("新年快樂(lè)！");        mailSender.send(simpleMailMessage);

        MimeMessage mimeMessage = mailSender.createMimeMessage();        MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage);        messageHelper.setFrom("[email protected]");        messageHelper.setTo("[email protected]");        messageHelper.setSubject("Happy New Year");        messageHelper.setText("新年快樂(lè)！");        messageHelper.addInline("doge.gif", new File("xx/xx/doge.gif"));        messageHelper.addAttachment("work.docx", new File("xx/xx/work.docx"));        mailSender.send(mimeMessage);    }

@Configuration@ConditionalOnProperty(prefix = "spring.mail", name = "host")class MailSenderPropertiesConfiguration {    private final MailProperties properties;    MailSenderPropertiesConfiguration(MailProperties properties) {        this.properties = properties;    }    @Bean    @ConditionalOnMissingBean    public JavaMailSenderImpl mailSender() {        JavaMailSenderImpl sender = new JavaMailSenderImpl();        applyProperties(sender);        return sender;????}

@ConfigurationProperties(prefix = "spring.mail")public class MailProperties {    private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;    private String host;    private Integer port;    private String username;    private String password;    private String protocol = "smtp";    private Charset defaultEncoding = DEFAULT_CHARSET;    private Map<String, String> properties = new HashMap<>();}

    <dependencies>        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-starter-webartifactId>        dependency>        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-starter-thymeleafartifactId>        dependency>        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-starter-mailartifactId>        dependency>        <dependency>            <groupId>org.webjarsgroupId>            <artifactId>webjars-locator-coreartifactId>        dependency>        <dependency>            <groupId>org.webjarsgroupId>            <artifactId>jqueryartifactId>            <version>3.3.1version>        dependency>        <dependency>            <groupId>org.webjarsgroupId>            <artifactId>bootstrapartifactId>            <version>3.3.7version>        dependency>        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-devtoolsartifactId>            <scope>runtimescope>        dependency>        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-starter-testartifactId>            <scope>testscope>        dependency>????dependencies>

spring:  mail:    host: smtp.163.com #SMTP服務(wù)器地址    username:  socks #登陸賬號(hào)    password: 123456 #登陸密碼（或授權(quán)碼）    properties:      from: [email protected] #郵件發(fā)信人（即真實(shí)郵箱）  thymeleaf:    cache: false    prefix: classpath:/views/  servlet:    multipart:      max-file-size: 10MB #限制單個(gè)文件大小      max-request-size: 50MB #限制請(qǐng)求總量

package com.hehe.vo;public class MailVo {    private String id;    private String from;    private String to;    private String subject;    private String text;    private Date sentDate;    private String cc;    private String bcc;    private String status;    private String error;    @JsonIgnore    private MultipartFile[] multipartFiles;}

package?com.hehe.service;@Servicepublic class MailService {    private Logger logger = LoggerFactory.getLogger(getClass());    @Autowired    private JavaMailSenderImpl mailSender;    public MailVo sendMail(MailVo mailVo) {        try {            checkMail(mailVo);             sendMimeMail(mailVo);             return saveMail(mailVo);         } catch (Exception e) {            logger.error("發(fā)送郵件失敗:", e);            mailVo.setStatus("fail");            mailVo.setError(e.getMessage());            return mailVo;        }    }    private void checkMail(MailVo mailVo) {        if (StringUtils.isEmpty(mailVo.getTo())) {            throw new RuntimeException("郵件收信人不能為空");        }        if (StringUtils.isEmpty(mailVo.getSubject())) {            throw new RuntimeException("郵件主題不能為空");        }        if (StringUtils.isEmpty(mailVo.getText())) {            throw new RuntimeException("郵件內(nèi)容不能為空");        }    }    private void sendMimeMail(MailVo mailVo) {        try {            MimeMessageHelper messageHelper = new MimeMessageHelper(mailSender.createMimeMessage(), true);            mailVo.setFrom(getMailSendFrom());            messageHelper.setFrom(mailVo.getFrom());            messageHelper.setTo(mailVo.getTo().split(","));            messageHelper.setSubject(mailVo.getSubject());            messageHelper.setText(mailVo.getText());            if (!StringUtils.isEmpty(mailVo.getCc())) {                messageHelper.setCc(mailVo.getCc().split(","));            }            if (!StringUtils.isEmpty(mailVo.getBcc())) {                messageHelper.setCc(mailVo.getBcc().split(","));            }            if (mailVo.getMultipartFiles() != null) {                for (MultipartFile multipartFile : mailVo.getMultipartFiles()) {                    messageHelper.addAttachment(multipartFile.getOriginalFilename(), multipartFile);                }            }            if (StringUtils.isEmpty(mailVo.getSentDate())) {                mailVo.setSentDate(new Date());                messageHelper.setSentDate(mailVo.getSentDate());            }            mailSender.send(messageHelper.getMimeMessage());            mailVo.setStatus("ok");            logger.info("發(fā)送郵件成功：{}->{}", mailVo.getFrom(), mailVo.getTo());        } catch (Exception e) {            throw new RuntimeException(e);        }    }    private MailVo saveMail(MailVo mailVo) {        return mailVo;    }    public String getMailSendFrom() {        return mailSender.getJavaMailProperties().getProperty("from");    }}

@RestControllerpublic class MailController {    @Autowired    private MailService mailService;
    @GetMapping("/")    public ModelAndView index() {        ModelAndView mv = new ModelAndView("mail/sendMail");        mv.addObject("from", mailService.getMailSendFrom());        return mv;    }
    @PostMapping("/mail/send")    public MailVo sendMail(MailVo mailVo, MultipartFile[] files) {        mailVo.setMultipartFiles(files);        return mailService.sendMail(mailVo);    }}

<html xmlns:th="http://www.thymeleaf.org">
<head>    <meta charset="UTF-8"/>    <title>發(fā)送郵件title>    <link th:href="@{/webjars/bootstrap/css/bootstrap.min.css}" rel="stylesheet" type="text/css"/>    <script th:src="@{/webjars/jquery/jquery.min.js}">script>    <script th:href="@{/webjars/bootstrap/js/bootstrap.min.js}">script>
head>
<body><div>    <marquee behavior="alternate" onfinish="alert(12)"             onMouseOut="this.start();$('#egg').text('嗯 真聽(tīng)話！');"             onMouseOver="this.stop();$('#egg').text('有本事放開(kāi)我呀！');">        <h5>祝大家新年快樂(lè)！h5><img src="http://pics.sc.chinaz.com/Files/pic/faces/3709/7.gif" alt="">    marquee>
    <form>        <div>            <label>郵件發(fā)信人:label>            <div>                <input ${from}" readonly="readonly">            div>        div>        <div>            <label>郵件收信人:label>            <div>                <input >            div>        div>        <div>            <label>郵件主題:label>            <div>                <input >            div>        div>        <div>            <label>郵件內(nèi)容:label>            <div>                <textarea >textarea>            div>        div>        <div>            <label>郵件附件:label>            <div>                <input >            div>        div>        <div>            <label>郵件操作:label>            <div>                <a onclick="sendMail()">發(fā)送郵件a>            div>            <div>                <a onclick="clearForm()">清空a>            div>        div>    form>
    <script th:inline="javascript">        var appCtx = [[${#request.getContextPath()}]];
        function sendMail() {
            var formData = new FormData($('#mailForm')[0]);            $.ajax({                url: appCtx + '/mail/send',                type: "POST",                data: formData,                contentType: false,                processData: false,                success: function (result) {                    alert(result.status === 'ok' ? "發(fā)送成功！" : "你被Doge嘲諷了：" + result.error);                },                error: function () {                    alert("發(fā)送失敗！");                }            });        }
        function clearForm() {            $('#mailForm')[0].reset();        }
        setInterval(function () {            var total = $('#mq').width();            var width = $('#doge').width();            var left = $('#doge').offset().left;            if (left <= width / 2 + 20) {                $('#doge').css('transform', 'rotateY(180deg)')            }            if (left >= total - width / 2 - 40) {                $('#doge').css('transform', 'rotateY(-360deg)')            }        });script>div>body>html>