SpringBoot添加Email发送功能及常见异常详解

SpringBoot添加Email发送功能及常见异常详解

1、完整的邮件发送代码

1.1、依赖包

org.springframework

spring-support

2.0.8

javax.servlet

servlet-api

<groupId>javax.mail

mail

1.4.7

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

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http://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：

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：

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。

第三点：

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 = "

+ "

" +receiverName+" 您好,

+ "

    生产日程-"+title+"中的下列任务将于"+day+"天后开始启动，请关注:

+ "

+ "

+ "

+ "

+ "

+ emailTable

+ "

+ "

    每项任务的详细情况,请登陆 "

+ "项目综合管理&评价系统 查看!

+ "

项目综合管理&评价系统"+emailDate+"

+ "";

return html;

}

应用改模版后，发出的邮件显示效果如下：

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

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 http://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

如果运行过程中报上述异常，请再次核对收发邮件的邮箱账号是否有效。

3、总结

SpringBoot邮件发送主要是利用已封装好的两个jar包：mail-1.4.7.jar、spring-support-2.0.8.jar，使得配置邮件发送不再复杂。

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