SpringBoot添加Email发送功能及常见异常详解_Java教程

1、完整的邮件发送代码

1.1、依赖包

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									<dependency>

									      <groupId>org.springframework</groupId>

									      <artifactId>spring-support</artifactId>

									      <version>2.0.8</version>

									      <exclusions> 

									        <exclusion> 

									          <groupId>javax.servlet</groupId> 

									          <artifactId>servlet-api</artifactId>          

									        </exclusion> 

									      </exclusions>              

									</dependency>

									<dependency>

									      <groupId>javax.mail</groupId>

									      <artifactId>mail</artifactId>

									      <version>1.4.7</version>

									</dependency>

主要用到了两个jar包：mail-1.4.7.jar、spring-support-2.0.8.jar.

1.2、邮件发送类

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									package com.autonavi.utils;

									import java.util.Properties;

									import javax.mail.MessagingException;

									import javax.mail.internet.MimeMessage;

									import org.slf4j.Logger;

									import org.slf4j.LoggerFactory;

									import org.springframework.mail.javamail.JavaMailSenderImpl;

									import org.springframework.mail.javamail.MimeMessageHelper;

									import com.autonavi.constants.Constant;

									public class EmailUtils {

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

									  public static boolean sendHtmlMail(String subject,String content,String receiver){

									    boolean result = true;

									    try{

									      JavaMailSenderImpl senderImpl = new JavaMailSenderImpl(); 

									      // 设定mail server 

									      senderImpl.setHost("smtp.abcdefg.com"); 

									      senderImpl.setPort(345);

									      senderImpl.setUsername(Constant.email);               // 根据自己的情况,设置发件邮箱地址 

									      senderImpl.setPassword(Constant.email_password);          // 根据自己的情况, 设置password 

									      senderImpl.setDefaultEncoding("UTF-8");

									      Properties prop = new Properties(); 

									      prop.put("mail.smtp.auth", "true");                 // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确 

									      prop.put("mail.smtp.ssl.enable", "true");

									      prop.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

									      senderImpl.setJavaMailProperties(prop); 

									      // 建立邮件消息,发送简单邮件和html邮件的区别 

									      MimeMessage mailMessage = senderImpl.createMimeMessage(); 

									      MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage); 

									      // 设置收件人，寄件人 

									      messageHelper.setTo(receiver); 

									      messageHelper.setFrom(Constant.email); 

									      messageHelper.setSubject(subject);

									      // true 表示启动HTML格式的邮件 

									      messageHelper.setText(content,true); 

									      // 发送邮件 

									      senderImpl.send(mailMessage); 

									    } catch (MessagingException e) {

									      // TODO Auto-generated catch block

									      result = false;

									      logger.info("EmailUtils.method [sendHtmlMail]: email send result-" + result +",error message-" + e);

									    }

									    return result;

									  }

									}

以上设置中，有几个点需要注意：

第一点：

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									senderImpl.setUsername(Constant.email); 

									senderImpl.setPassword(Constant.email_password);

上面两个方法是用来设置发件的邮箱，邮箱地址要写全，如aba@abc.com。

如果设置得不对，会提示权限错误。

第二点：

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									senderImpl.setDefaultEncoding(“UTF-8”);

这个一定记得设置，否则会邮件发出去会是下面这种结果。

SpringBoot添加Email发送功能及常见异常详解

第三点：

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									Properties prop = new Properties(); 

									prop.put(“mail.smtp.auth”, “true”); 

									prop.put(“mail.smtp.ssl.enable”, “true”); 

									prop.put(“mail.smtp.socketFactory.class”, “javax.NET.ssl.SSLSocketFactory”); 

									senderImpl.setJavaMailProperties(prop);

一定要记得配置Properties，且上述配置缺一不可，如果没配置，大家会看见各种奇怪的异常。

1.3、邮件正文处理，使用HTML模版

下面的getHtmlStr()方法用来将待发送的内容处理为HTML模版。

public static String getHtmlStr(JSONArray data,String receiver,int day){

    JSONObject json = data.getJSONObject(0);

    String title = json.getString("task_tittle");

    // NO.1、获取收件人名

    String receiverName = getEmailStr(receiver);

    // NO.2、获取邮件表格

    String emailTable = getTableStr(data);

    // NO.3、获取邮件时间

    String emailDate = Date2Str.getCurrentDate2();

    String html = "<html><head></head><body>"

          + "<p>" +receiverName+" 您好,</p>"

          + "<p>    生产日程-<font size="4" color="#FF0000" face="Verdana" >"+title+"</font>中的下列任务将于<font size="4" color="#FF0000" face="Verdana" >"+day+"</font>天后开始启动，请关注:</p>"

          + "<div style="padding-left:20px">"

          + "<table border="1px" cellspacing="0px" style="border-collapse:collapse">"

          + "<tr>"

          + "<td>任务名</td><td>启动时间</td><td>结束时间</td>"

          + "</tr>"

          + emailTable

          + "</table></div>"

          + "<p>    每项任务的详细情况,请登陆 "

          + "<a href="http://100.78.205.244:8080"><font size="4" color="#FF0000">项目综合管理&评价系统</font></a> 查看!</p>"

          + "<p>项目综合管理&评价系统</br>"+emailDate+"</p>"

          + "</body></html>";

    return html;

  }

应用改模版后，发出的邮件显示效果如下：

SpringBoot添加Email发送功能及常见异常详解

至于具体业务场景，你想定义什么样的模版都行。

2、常见异常

503异常

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									2016-04-13-16-48 [scheduler-3] [org.springframework.scheduling.support.TaskUtils$LoggingErrorHandler] [ERROR] - Unexpected error occurred in scheduled task.

									 org.springframework.mail.MailSendException; nested exception details (1) are:

									Failed message 1:

									javax.mail.SendFailedException: Invalid Addresses;

									 nested exception is:

									  com.sun.mail.smtp.SMTPAddressFailedException: 503 RCPT account isn't a local account

									  at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1862)

									  at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1118)

									  at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:388)

									  at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:332)

									  at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:328)

									  at com.autonavi.utils.EmailUtils.sendHtmlMail(EmailUtils.java:50)

									  at com.autonavi.method.gaokuai.IssueForward.action(IssueForward.java:81)

									  at com.autonavi.task.ScheduledTasks.executeAutoAssignTask(ScheduledTasks.java:121)

									  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

									  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

									  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

									  at java.lang.reflect.Method.invoke(Method.java:606)

									  at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)

									  at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)

									  at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)

									  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

									  at java.util.concurrent.FutureTask.run(FutureTask.java:262)

									  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)

									  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)

									  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

									  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

									  at java.lang.Thread.run(Thread.java:745)

									Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 503 RCPT account isn't a local account

									  at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1715)

									  ... 21 more