已在 Jenkins的 job-构建后操作设置了邮件发送通知：（但是发送不成功，且报错）
1、跑完工程后，发送邮件触发失败 ？
Email was triggered for: Failure - Any Sending email for trigger: Failure - Any An attempt to send an e-mail to empty list of recipients, ignored. Finished: FAILURE
2、使用上一次跑的测试报告index.html（因为跑一份新的需要1个多小时，成本太大，），来打包发邮件，会报这个错误：
+ zip -r report.zip test-output/index.html
updating: test-output/index.html (deflated 96%)
Recording test results
ERROR: Step ‘Publish JUnit test result report’ failed: Test reports were found but none of them are new. Did leafNodes run?
For example, /Users/XXX/.jenkins/workspace/YYY-project/test-output/index.html is 23 分 old
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any
An attempt to send an e-mail to empty list of recipients, ignored.
Finished: FAILURE
这个问题找到解决办法：
Jenkins在执行JUnit报告时报错Test reports were found but none of them are new. Did leafNodes run? 问题解决：https://blog.csdn.net/lhh08hasee/article/details/82588539
——提到说，如果测试运行和JUnit插件运行间隔超过3秒，则插件将忽略这些文件。
——解决办法：更新这个文件的时间
3、同时需要确保已经配置了 "Extended E-mail Notification"
—— inspired by 【Jenkins Email sending fails 】
（在Jerkins-->Manage Jenkins -->Configure System -->"Extended E-mail Notification" 中进行配置 ）
——Extended E-mail Notification Plugin 插件的详细讲解
设置了邮箱之后，又报这个错：
+ zip -r report.zip test-output/index.html
updating: test-output/index.html (deflated 96%)
Recording test results
ERROR: Step ‘Publish JUnit test result report’ failed: Test reports were found but none of them are new. Did leafNodes run?
For example, /Users/yyy/.jenkins/workspace/CXXX/test-output/index.html is 1 小时 39 分 old
Checking for post-build
Performing post-build step
Checking if email needs to be generated
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any
messageContentType = text/html; charset=UTF-8
Collecting change authors...
build: 47
Adding recipients from trigger recipient list
Successfully created MimeMessage
An attempt to send an e-mail to empty list of recipients, ignored.
Some error occurred trying to send the email...check the Jenkins log
Finished: FAILURE
4、根据另一个接口自动化的Jenkins任务，参考其具体的配置，对此UI自动化工程进行配置，如下：
在：Jenkins --系统管理 --配置系统。
4.1）Jenkins Location
4.2）Extended E-mail Notification
4.3）邮件通知
5、build #55 又发生下面这个错： —— Publish Junit test result report的问题，换成 Publish HTML Report 就不会报此错了。（详见：Jenkins安装 HTML Publisher plugin插件）
+ zip -r report.zip test-output/index.html
adding: test-output/index.html (deflated 94%)
Recording test results
ERROR: Step ‘Publish JUnit test result report’ aborted due to exception:
org.xml.sax.SAXParseException; lineNumber: 670; columnNumber: 36; 在实体引用中, 实体名称必须紧跟在 '&' 后面。
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1472)
6、出现的终极大问题：
【SendFailedException message: 451 5.7.3 STARTTLS is required to send mail [SHAPR01CA039.CHNPR01.prod.partner.outlook.cn] 】
按照对应的内容配置好了，项目构建也成功了，发送报告邮件的时候，报错。
百度了这个错，并没有找到，最后通过FQGoogle找到的一个回答是：
需要去修改Jenkins启动命令文件，在该文件中加一句命令： -Dmail.smtp.starttls.enable=true
可是找到这个一个类似的文件：是jenkins_runner.sh，发现它里面已经有上述的那句命令了……（晕了）
所以，这个也解决不了……
7、问了下IT负责人，建议SMTP服务器和端口换一个试试，于是试了如下：
smtp服务器：XXX-com.mail.protection.partner.outlook.cn
端口 25
——然后测试邮件发送就可以了！！！
【Reference】
1、Jenkins在执行JUnit报告时报错Test reports were found but none of them are new. Did leafNodes run? 问题解决：https://blog.csdn.net/lhh08hasee/article/details/82588539
—— 提示需要配置 "Extended E-mail Notification"
——Extended E-mail Notification Plugin 插件的详细讲解
4、jenkins邮件持续集成之后，显示发送成功，未收到邮件问题：https://blog.csdn.net/zhichuan0307/article/details/105930543
5、Jenkins构建Job，通过Extended E-mail Notification发送邮件时遇到的问题：https://blog.csdn.net/Eri_Feng/article/details/80410701