Java发送邮件(文本和附件)

SpringBoot整合JavaMail通过阿⾥云企业邮箱发送邮件的实现JavaMail是Java开发中邮件处理的开源类库，⽀持常⽤协议如：SMTP、POP3、IMAP⼀、SpringBoot整合1、需要在pom⽂件中添加依赖spring-boot-starter-mail<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>构建项⽬，加载相关jar包2、在application.yml中配置邮件发送的相关信息spring:mail:host: #阿⾥云发送服务器地址port: 25 #端⼝号username: XXX@ #发送⼈地址password: ENC(Grg2n2TYzgJv9zpwufsf37ndTe+M1cYk) #密码3、编写邮件发送⼯具类MailUtilMailUtil.java/*** @author chenzan* @version V1.0* @description 邮件发送*/@Componentpublic class MailUtil {@AutowiredJavaMailSendermailSender;@AutowiredMailPropertiesmailProperties;/*** 发送邮件测试⽅法*/public void sendMail(MailBean mailBean) {SimpleMailMessage mimeMessage =new SimpleMailMessage();mimeMessage.setFrom(mailProperties.getUsername());mimeMessage.setTo(mailBean.getToAccount());mimeMessage.setSubject(mailBean.getSubject());mimeMessage.setText(mailBean.getContent());mailSender.send(mimeMessage);}/*** 发送邮件-附件邮件* @param boMailBean*/public boolean sendMailAttachment(MailBean mailBean) {try {MimeMessage mimeMessage =mailSender.createMimeMessage();MimeMessageHelper helper =new MimeMessageHelper(mimeMessage, true);helper.setFrom(mailProperties.getUsername());helper.setTo(boMailBean.getToAccount());helper.setSubject(mailBean.getSubject());helper.setText(mailBean.getContent(), true);// 增加附件名称和附件helper.addAttachment(MimeUtility.encodeWord(boMailBean.getAttachmentFileName(), "utf-8", "B"), mailBean.getAttachmentFile());mailSender.send(mimeMessage);return true;}catch (MessagingException e) {e.printStackTrace();return false;}}MailBean.java/*** @author chenzan* @version V1.0*/@Datapublic class MailBean {private Stringsubject;private String content;private String toAccount;private File attachmentFile;private String attachmentFileName;}4.发送String email = "XXX@";String content="测试内容";String subject = "测试主题";MailBean mailBean =new MailBean ();mailBean .setToAccount(email);boMailBean.setSubject(subject );boMailBean.setContent(content);boolean resultSend =mailUtil.sendMailAttachment(boMailBean);⼆、查看阿⾥云邮箱设置⽀持SMTP/POP3/IMAP功能，轻松通过客户端软件（outlook、foxmail等）收发邮件。

JavaWeb（⼗三）使⽤javamail进⾏发送邮件，（使⽤QQ，163，新浪邮箱服务器） 加油加油。

--WZY⼀、发送邮件的原理 在了解其原理之前，先要知道两个协议，SMTP和POP3 SMTP:Simple Mail Transfer Protocol，即简单邮件传输协议，发送邮件的协议，默认端⼝，25 POP3:Post Office Protocol 3，即邮局协议，接收邮件的协议，默认端⼝，110 知道了这两个协议，下⾯来说说邮件发送和接收的原理图，分两种，相同邮件(QQ邮箱给QQ邮箱)和不同邮件(QQ邮箱给163邮箱)是不⼀样的。

解释： 为了⽅便起见，将新浪邮箱，list@称为⽤户A，将搜狐邮箱，wangwu@ 称为⽤户B ⽤户A(新浪邮箱，list@)给⽤户B(搜狐邮箱，wangwu@)发送⼀封邮件，那么整个过程就为图中的实线部分，⽤户A通过OutLook(浏览器或者客户端)登录⾃⼰的邮箱帐号，编写邮件，使⽤Smtp协议发送给Sina的邮件服务器中的Smtp服务器(专门⽤来发送的服务器)，然后在通过SMTP协议，传输给Sohu的邮件服务器中的Smtp服务器，然后通过Sohu的Smtp服务器将邮件发送给⽤户B的存储设备进⾏存储(每个⽤户都会有⼀个存储空间⽤来存储邮件的)，到这⾥，⽤户A就相当于发送成功了，因为已经到达了⽬的地，如果B⽤户需要查看邮件内容，必须通过POP3服务器将从⾃⼰的存储设备中拿到，然后返回到浏览器或者客户端中显⽰。

⽤户B给⽤户A发送⼀封邮件，那么整个过程就为图中的虚线部分，是和A给B发⼀样的步骤 ⽤户A给⼀个同样使⽤新浪邮箱的⽤户C发送⼀封邮件，那么其过程就简单的多了，先通过Smtp服务器，然后smtp服务器会将其发送到⽤户C的存储设备上，A发送邮件就成功了，⽤户C要显⽰⾃⼰邮箱中的邮件，那么就通过POP3服务器从⾃⼰存储设备中拿取所有邮件进⾏查看。

⼆、通过Java代码实现发送邮件 2.1、准备jar包 核⼼：mail.jar 依赖：activation.jar，邮件需要发送附件时使⽤ 2.2、使⽤163邮箱发送邮件 2.2.1、⾸先在163邮箱中注册⼀个帐号。

Java实现发送邮件,图⽚,附件1、JavaMail 介绍JavaMail 是sun公司（现以被甲⾻⽂收购）为⽅便Java开发⼈员在应⽤程序中实现邮件发送和接收功能⽽提供的⼀套标准开发包，它⽀持⼀些常⽤的邮件协议，如前⾯所讲的SMTP，POP3，IMAP,还有MIME等。

我们在使⽤JavaMail API 编写邮件时，⽆须考虑邮件的底层实现细节，只要调⽤JavaMail 开发包中相应的API类就可以了。

JavaMail 下载地址:2、JavaMail APIJavaMail API 按照功能可以划分为如下三⼤类：①、创建和解析邮件的API②、发送邮件的API③、接收邮件的API以上三种类型的API在JavaMail 中由多个类组成，但是主要有四个核⼼类，我们在编写程序时，记住这四个核⼼类，就很容易编写出Java邮件处理程序。

Message 类:javax.mail.Message 类是创建和解析邮件的核⼼ API，这是⼀个抽象类，通常使⽤它的⼦类javax.mail.internet.MimeMessage 类。

它的实例对象表⽰⼀份电⼦邮件。

客户端程序发送邮件时，⾸先使⽤创建邮件的 JavaMail API 创建出封装了邮件数据的 Message 对象，然后把这个对象传递给邮件发送API（Transport 类）发送。

客户端程序接收邮件时，邮件接收API把接收到的邮件数据封装在Message 类的实例中，客户端程序在使⽤邮件解析API从这个对象中解析收到的邮件数据。

Transport 类：javax.mail.Transport 类是发送邮件的核⼼API 类，它的实例对象代表实现了某个邮件发送协议的邮件发送对象，例如 SMTP 协议，客户端程序创建好Message 对象后，只需要使⽤邮件发送API 得到 Transport 对象，然后把 Message 对象传递给 Transport 对象，并调⽤它的发送⽅法，就可以把邮件发送给指定的 SMTP 服务器。

hutool mail用法Hutool Mail 详细使用指南简介Hutool Mail 是一个功能强大且易于使用的 Java 邮件发送工具。

它提供了发送简单文本邮件、HTML 邮件以及附件邮件等功能，可以满足各种场景下的邮件发送需求。

用法引入依赖首先，在项目的 `` 文件中添加以下依赖：<dependency><groupId></groupId><artifactId>hutool-mail</artifactId><version></version></dependency>发送简单文本邮件Hutool Mail 可以轻松地发送简单的文本邮件。

以下是发送简单文本邮件的示例代码：// 创建邮件配置MailAccount account = new MailAccount();("");(25);(true);("");("username");("password");// 创建邮件SimpleMail mail = new SimpleMail(account);("Hello Hutool Mail");(true);("This is a simple text email.");// 添加收件人("");// 发送邮件();发送 HTML 邮件Hutool Mail 还支持发送 HTML 邮件，可以发送富文本内容。

以下是发送 HTML 邮件的示例代码：// 创建邮件配置（同上述示例）// 创建邮件HtmlMail mail = new HtmlMail(account);("Hello Hutool Mail");(true);("<h1>This is a HTML email.</h1>");// 添加收件人（同上述示例）// 发送邮件（同上述示例）();发送带附件的邮件如果需要发送带附件的邮件，Hutool Mail 也提供了相应的功能。

javamaven项⽬实现发送邮件1，先导⼊⼀个jar包在pom.xml 中写⼊<!-- 邮件start --><dependency><groupId>javax.mail</groupId><artifactId>mail</artifactId><version>1.4.7</version></dependency><!-- 邮件end -->2，写⼀个邮件的类包括，发送内容，端⼝等public class MailSenderInfo {// 发送邮件的服务器的IP和端⼝private String mailServerHost;private String mailServerPort = "25";// 邮件发送者的地址private String fromAddress;// 邮件接收者的地址private String toAddress;// 登陆邮件发送服务器的⽤户名和密码private String userName;private String password;// 是否需要⾝份验证private boolean validate = false;// 邮件主题private String subject;// 邮件的⽂本内容private String content;// 邮件附件的⽂件名private String[] attachFileNames;private String iwallHost ;/*** 获得邮件会话属性*/public Properties getProperties(){Properties p = new Properties();p.put("mail.smtp.host", this.mailServerHost);p.put("mail.smtp.port", this.mailServerPort);p.put("mail.smtp.auth", validate ? "true" : "false");return p;}public String getMailServerHost() {return mailServerHost;}public void setMailServerHost(String mailServerHost) {this.mailServerHost = mailServerHost;}public String getMailServerPort() {return mailServerPort;}public void setMailServerPort(String mailServerPort) {this.mailServerPort = mailServerPort;}public boolean isValidate() {return validate;}public void setValidate(boolean validate) {this.validate = validate;}public String[] getAttachFileNames() {return attachFileNames;}public void setAttachFileNames(String[] fileNames) {this.attachFileNames = fileNames;}public String getFromAddress() {return fromAddress;}public void setFromAddress(String fromAddress) {this.fromAddress = fromAddress;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getToAddress() {return toAddress;}public void setToAddress(String toAddress) {this.toAddress = toAddress;}public String getUserName() {return userName;}public void setUserName(String userName) {erName = userName;}public String getSubject() {return subject;}public void setSubject(String subject) {this.subject = subject;}public String getContent() {return content;}public void setContent(String textContent) {this.content = textContent;}public String getIwallHost() {return iwallHost;}public void setIwallHost(String iwallHost) {this.iwallHost = iwallHost;}}3，为了可配置性，可将上⾯的类的所需信息写⼊配置⽂件⾥<bean id = "mailInfo" class = "xxxxxxx.MailSenderInfo" ><property name="mailServerHost" value = ""></property> <property name="mailServerPort" value = "25"></property><property name="fromAddress" value = "xxxxxxx@xx.xxx"></property><property name="userName" value = "xxxxxxxx"></property><property name="password" value = "xxxxx"></property><property name="iwallHost" value = "http://localhost:8080/xxxxx"></property> </bean>4，写⼀个简单的发送邮件的类，包含发送text或者 html的⽅法public class SimpleMailSender {/*** 以⽂本格式发送邮件* @param mailInfo 待发送的邮件的信息*/public boolean sendTextMail(MailSenderInfo mailInfo) {// 判断是否需要⾝份认证MyMailAuthenticator authenticator = null;Properties pro = mailInfo.getProperties();if (mailInfo.isValidate()) {// 如果需要⾝份认证，则创建⼀个密码验证器authenticator = new MyMailAuthenticator(mailInfo.getUserName(), mailInfo.getPassword()); }// 根据邮件会话属性和密码验证器构造⼀个发送邮件的sessionSession sendMailSession = Session.getDefaultInstance(pro,authenticator);try {// 根据session创建⼀个邮件消息Message mailMessage = new MimeMessage(sendMailSession);// 创建邮件发送者地址Address from = new InternetAddress(mailInfo.getFromAddress());// 设置邮件消息的发送者mailMessage.setFrom(from);// 创建邮件的接收者地址，并设置到邮件消息中Address to = new InternetAddress(mailInfo.getToAddress());mailMessage.setRecipient(Message.RecipientType.TO,to);// 设置邮件消息的主题mailMessage.setSubject(mailInfo.getSubject());// 设置邮件消息发送的时间mailMessage.setSentDate(new Date());// 设置邮件消息的主要内容String mailContent = mailInfo.getContent();mailMessage.setText(mailContent);// 发送邮件Transport.send(mailMessage);return true;} catch (MessagingException ex) {ex.printStackTrace();}return false;}/*** 以HTML格式发送邮件* @param mailInfo 待发送的邮件信息*/public static boolean sendHtmlMail(MailSenderInfo mailInfo){// 判断是否需要⾝份认证MyMailAuthenticator authenticator = null;Properties pro = mailInfo.getProperties();//如果需要⾝份认证，则创建⼀个密码验证器if (mailInfo.isValidate()) {authenticator = new MyMailAuthenticator(mailInfo.getUserName(), mailInfo.getPassword()); }// 根据邮件会话属性和密码验证器构造⼀个发送邮件的sessionSession sendMailSession = Session.getDefaultInstance(pro,authenticator);try {// 根据session创建⼀个邮件消息Message mailMessage = new MimeMessage(sendMailSession);// 创建邮件发送者地址Address from = new InternetAddress(mailInfo.getFromAddress());// 设置邮件消息的发送者mailMessage.setFrom(from);// 创建邮件的接收者地址，并设置到邮件消息中Address to = new InternetAddress(mailInfo.getToAddress());// Message.RecipientType.TO属性表⽰接收者的类型为TOmailMessage.setRecipient(Message.RecipientType.TO,to);// 设置邮件消息的主题mailMessage.setSubject(mailInfo.getSubject());// 设置邮件消息发送的时间mailMessage.setSentDate(new Date());// MiniMultipart类是⼀个容器类，包含MimeBodyPart类型的对象Multipart mainPart = new MimeMultipart();// 创建⼀个包含HTML内容的MimeBodyPartBodyPart html = new MimeBodyPart();// 设置HTML内容html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");mainPart.addBodyPart(html);// 将MiniMultipart对象设置为邮件内容mailMessage.setContent(mainPart);// 发送邮件Transport.send(mailMessage);return true;} catch (MessagingException ex) {ex.printStackTrace();}return false;}}5，在类中，实现发送邮件，建议另起线程发送邮件/*** 发送邮件内部类**/class SendEmailThread implements Runnable {private MailSenderInfo mailInfo;public SendEmailThread(MailSenderInfo mailInfo) {this.mailInfo = mailInfo;}@Overridepublic void run() {try {if (this.mailInfo != null) {SimpleMailSender.sendHtmlMail(mailInfo);}} catch (Exception e) {e.printStackTrace();}}}/*** 发送邮件⽅法** @param account* @param code*/public void sendEmail(String account, String code) {WebApplicationContext ac = ContextLoader.getCurrentWebApplicationContext();// 获取当前服务IPMailSenderInfo mailInfo = (MailSenderInfo) ac.getBean("mailInfo");mailInfo.setValidate(Boolean.TRUE);mailInfo.setToAddress(account);mailInfo.setSubject("验证码邮件");mailInfo.setContent("<p>您好!</p><p>感谢您注册成为xxxxxx⽤户！</p><p>您的验证码是：" + code + "。

java邮件发送（单⼈，多⼈，抄送，Excel附件） 直接上代码保存吧package com.westvalley.ceiec.page.report.sendmail;import weaver.email.EmailEncoder;import javax.mail.*;import javax.mail.internet.*;import javax.mail.util.ByteArrayDataSource;import javax.activation.*;import mons.logging.Log;import mons.logging.LogFactory;import ermodel.HSSFWorkbook;import crivia.db.i.DataSet;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.util.*;/**邮件发送⼯具类* @author whh*/public class Email {Log log = LogFactory.getLog(this.getClass());//发件⼈地址private String mail_from;public void setMail_from(String mailFrom) {mail_from = mailFrom;}public String getMail_from() {return mail_from;}//发件⼈密码private String password;public void setPassword(String password) {this.password = password;}public String getPassword() {return password;}//收件地址private String mail_to;public void setMail_to(String mailTo) {mail_to = mailTo;}public String getMail_to() {return mail_to;}//主题private String title;public void setTitle(String title) {this.title = title;}public String getTitle() {return title;}//内容private String message;public void setMessage(String message) {this.message = message;}public String getMessage() {return message;}//发件⼈邮件服务器如： 191.0.0.6private String send_server;public void setSend_server(String sendServer) {send_server = sendServer;}public String getSend_server() {return send_server;}/** 单个发送 setMail_to(String mailTo)* @return是否正确发送* @throws AddressException*/public boolean SendMail()throws AddressException{try{int n = this.mail_from.indexOf('@');int m = this.mail_from.length();//取邮件的服务器String server = this.mail_from.substring(n+1, m);//建⽴邮件会话Properties pro = new Properties();pro.put("mail.smtp.host", "smtp."+server);pro.put("mail.smtp.auth", "true");Session sess = Session.getInstance(pro);sess.setDebug(true);//新建⼀个消息对象MimeMessage message = new MimeMessage(sess);//设置发件⼈InternetAddress from_address = new InternetAddress(this.mail_from); message.setFrom(from_address);//设置收件⼈InternetAddress to_address = new InternetAddress(this.mail_to);message.setRecipient(Message.RecipientType.TO, to_address);//设置主题message.setSubject(title);//设置内容message.setContent(this.message, "text/html;charset=UTF-8");//设置发送时间message.setSentDate(new Date());//发送邮件message.saveChanges(); //保存邮件信息//设置发送的格式Transport transport = sess.getTransport("smtp");if(this.send_server == null){transport.connect("191.0.0.6", this.mail_from, password);}else{transport.connect(this.send_server, this.mail_from, password);}transport.sendMessage(message, message.getAllRecipients());transport.close();("向"+this.mail_to+"发送邮件成功");return true;}catch(Exception e){("发送邮件失败，原因可能是"+e.toString());return false;}}/**群发* @param addresses 地址list* @return* @throws AddressException*/public boolean SendMail(List<String> addresses) throws AddressException{ try{int n = this.mail_from.indexOf('@');int m = this.mail_from.length();//取邮件的服务器String server = this.mail_from.substring(n+1, m);//建⽴邮件会话Properties pro = new Properties();pro.put("mail.smtp.host", "smtp."+server);pro.put("mail.smtp.auth", "true");Session sess = Session.getInstance(pro);sess.setDebug(true);//新建⼀个消息对象MimeMessage message = new MimeMessage(sess);//设置发件⼈InternetAddress from_address = new InternetAddress(this.mail_from); message.setFrom(from_address);//设置收件⼈，多个final int num = addresses.size();InternetAddress to_address[] = new InternetAddress[num];for(int i=0; i<num; i++){to_address[i] = new InternetAddress(addresses.get(i));}message.setRecipients(Message.RecipientType.TO, to_address);//设置主题message.setSubject(title);//设置内容message.setContent(this.message, "text/html;charset=UTF-8");//设置发送时间message.setSentDate(new Date());//发送邮件message.saveChanges(); //保存邮件信息//设置发送的格式Transport transport = sess.getTransport("smtp");if(this.send_server == null){transport.connect("191.0.0.6", this.mail_from, password);}else{transport.connect(this.send_server, this.mail_from, password);}transport.sendMessage(message, message.getAllRecipients());transport.close();("发送邮件成功");return true;}catch(Exception e){("发送邮件失败，原因可能是"+e.getMessage());return false;}}/** 多⼈发送并抄送增加：2017-04-25 whh* @param addresses 收件邮箱（多个）* @param ccAddresses 抄送邮箱（多个）* @return* @throws AddressException*/public boolean SendMail(List<String> addresses, List<String> ccAddresses) throws AddressException{if(0==ccAddresses.size()){ //20170428 whhreturn SendMail(addresses);}try{int n = this.mail_from.indexOf('@');int m = this.mail_from.length();//取邮件的服务器String server = this.mail_from.substring(n+1, m);//建⽴邮件会话Properties pro = new Properties();pro.put("mail.smtp.host", "smtp."+server);pro.put("mail.smtp.auth", "true");Session sess = Session.getInstance(pro);sess.setDebug(true);//新建⼀个消息对象MimeMessage message = new MimeMessage(sess);//设置发件⼈InternetAddress from_address = new InternetAddress(this.mail_from);message.setFrom(from_address);//设置收件⼈，多个final int num = addresses.size();InternetAddress to_address[] = new InternetAddress[num];for(int i=0; i<num; i++){to_address[i] = new InternetAddress(addresses.get(i));}message.setRecipients(Message.RecipientType.TO, to_address);//设置抄送⼈final int ccSize = ccAddresses.size();if(ccSize > 0){InternetAddress cc_Address[] = new InternetAddress[ccSize];for(int i=0; i<ccSize; i++){cc_Address[i] = new InternetAddress(ccAddresses.get(i));}message.setRecipients(, cc_Address);}//设置主题message.setSubject(title);//设置内容message.setContent(this.message, "text/html;charset=UTF-8");//设置发送时间message.setSentDate(new Date());//发送邮件message.saveChanges(); //保存邮件信息//设置发送的格式Transport transport = sess.getTransport("smtp");if(this.send_server == null){transport.connect("191.0.0.6", this.mail_from, password);}else{transport.connect(this.send_server, this.mail_from, password);}transport.sendMessage(message, message.getAllRecipients());transport.close();("发送邮件成功");return true;}catch(Exception e){("发送邮件失败，原因可能是"+e.getMessage());return false;}}/** 多⼈发送并抄送增加：2019-06-14 whh* @param addresses 收件邮箱（多个）* @param ccAddresses 抄送邮箱（多个）* @param is 附件* @return* @throws AddressException*/public boolean SendMail(List<String> addresses, List<String> ccAddresses,HSSFWorkbook workBook,String workBookName) throwsAddressException{try{int n = this.mail_from.indexOf('@');int m = this.mail_from.length();//取邮件的服务器String server = this.mail_from.substring(n+1, m);//建⽴邮件会话Properties pro = new Properties();pro.put("mail.smtp.host", "smtp."+server);pro.put("mail.smtp.auth", "true");Session sess = Session.getInstance(pro);sess.setDebug(true);//新建⼀个消息对象MimeMessage message = new MimeMessage(sess);//设置发件⼈InternetAddress from_address = new InternetAddress(this.mail_from);message.setFrom(from_address);//设置收件⼈，多个final int num = addresses.size();InternetAddress to_address[] = new InternetAddress[num];for(int i=0; i<num; i++){to_address[i] = new InternetAddress(addresses.get(i));}message.setRecipients(Message.RecipientType.TO, to_address);//设置抄送⼈final int ccSize = ccAddresses.size();if(ccSize > 0){InternetAddress cc_Address[] = new InternetAddress[ccSize];for(int i=0; i<ccSize; i++){cc_Address[i] = new InternetAddress(ccAddresses.get(i));}message.setRecipients(, cc_Address);}//附件ByteArrayOutputStream baos = new ByteArrayOutputStream();workBook.write(baos);baos.flush();byte[] bt = baos.toByteArray();InputStream is = new ByteArrayInputStream(bt, 0, bt.length);baos.close();/*添加正⽂内容*/Multipart multipart = new MimeMultipart();BodyPart contentPart = new MimeBodyPart();// contentPart.setText(this.message);// contentPart.setHeader("Content-Type", "text/html;charset=UTF-8");contentPart.setContent(this.message, "text/html;charset=UTF-8");multipart.addBodyPart(contentPart);/*添加附件*/MimeBodyPart fileBody = new MimeBodyPart();DataSource source = new ByteArrayDataSource(is, "application/msexcel"); fileBody.setDataHandler(new DataHandler(source));// 中⽂乱码问题fileBody.setFileName(MimeUtility.encodeText(workBookName+".xls"));multipart.addBodyPart(fileBody);//设置主题message.setSubject(title);//设置内容message.setContent(multipart);//设置发送时间message.setSentDate(new Date());//发送邮件message.saveChanges(); //保存邮件信息//设置发送的格式Transport transport = sess.getTransport("smtp");if(this.send_server == null){transport.connect("191.0.0.6", this.mail_from, password);}else{transport.connect(this.send_server, this.mail_from, password);}transport.sendMessage(message, message.getAllRecipients());transport.close();("发送邮件成功");return true;}catch(Exception e){("发送邮件失败，原因可能是"+e.getMessage());return false;}}/**邮箱初始化，发件⼈邮箱、密码及服务器信息的获取* @return正确获取时返回Email对象，否则为null*/public static Email intiEmail(){// Log log = LogFactory.getLog(this.getClass());Email email = new Email();//获取系统的邮箱信息DataSet data = SQL.select(SQL.sql_Array(" select defmailpassword" +",defmailserver,defmailfrom from SystemSet "));if(data.next()){//发件⼈邮箱地址email.setMail_from(data.get("defmailfrom"));//获取并解析邮箱密码email.setPassword(EmailEncoder.DecoderPassword(data.get("defmailpassword")));// ("Password:"+EmailEncoder.DecoderPassword(data.get("defmailpassword"))); //服务器信息email.setSend_server(data.get("defmailserver"));}if(email.getMail_from().equals("")||email.getPassword().equals("")||email.getSend_server().equals("")){// ("发送⼈邮箱错误");// ("From："+email.getMail_from()+"Password:"+// email.getPassword()+"Server:"+email.getSend_server());return null;}return email;}}。

Java基于JavaMail实现向QQ邮箱发送邮件最近项⽬在做新闻爬⾍，想实现这个功能：爬⾍某个页⾯失败后，把这个页⾯的 url 发到邮箱。

最终实现的效果图如下，后期可以加上过滤标签、失败状态码等，⽅便分类搜索异常。

开发⼈员可以根据邮件⾥的 url 和堆栈信息，分析爬⾍失败的原因。

是不是服务器 down 了？还是爬⾍的 Dom 解析没有解析到内容?还是正则表达式对于这个页⾯不适⽤?开启SMTP服务在 QQ 邮箱⾥的设置->账户⾥开启 SMTP 服务注意开启完之后，QQ 邮箱会⽣成⼀个授权码，在代码⾥连接邮箱使⽤这个授权码⽽不是原始的邮箱密码，这样可以避免使⽤明⽂密码。

⽹上查了⼀下例⼦，根据这篇⽂章 Java Mail(⼆)：JavaMail介绍及发送⼀封简单邮件的⽰例代码。

Properties props = new Properties();// 开启debug调试props.setProperty("mail.debug", "true");// 发送服务器需要⾝份验证props.setProperty("mail.smtp.auth", "true");// 设置邮件服务器主机名props.setProperty("mail.host", "");// 发送邮件协议名称props.setProperty("mail.transport.protocol", "smtp");Session session = Session.getInstance(props);//邮件内容部分Message msg = new MimeMessage(session);msg.setSubject("seenews 错误");StringBuilder builder = new StringBuilder();builder.append("url = " + "/never_cxb/article/details/50524571");builder.append("页⾯爬⾍错误");builder.append("\n data " + TimeTool.getCurrentTime());msg.setText(builder.toString());//邮件发送者msg.setFrom(new InternetAddress("**发送⼈的邮箱地址**"));//发送邮件Transport transport = session.getTransport();transport.connect("", "**发送⼈的邮箱地址**", "**你的邮箱密码或者授权码**");transport.sendMessage(msg, new Address[] { new InternetAddress("**接收⼈的邮箱地址**") });transport.close();但是报错了DEBUG SMTP: AUTH LOGIN command trace suppressedDEBUG SMTP: AUTH LOGIN failedException in thread "main" javax.mail.AuthenticationFailedException: 530Error: A secure connection is requiered(such as ssl). More information at /cgi-bin/help?id=28因为⽰例代码是⽤的163邮箱，⽽笔者是 QQ 邮箱，看 Log 分析是 QQ 邮箱需要 SSL 加密。