Question

我正在为我的存储过程获取XML，我需要迭代它并根据XML发送电子邮件。

我有另一个存储过程只是为了发送电子邮件：

MailingSystem..SP_SendEmail 
               @Cc = N'', -- nvarchar(500)
               @Bcc = N'', -- nvarchar(500)
               @FromEMailAddress = N'', -- nvarchar(500)
               @ReplyToEMailAddress = N'', -- nvarchar(500)
               @Subject = N'', -- nvarchar(500)
               @EmailRecipient = N'', -- nvarchar(500)
               @ContentType = N'', -- nvarchar(50)
               @Content = N'', -- nvarchar(max)

以下是XML的结构：

DECLARE @XMLData XML =          
        '<GenericXML>
             <GenericEmailsNotification>
                 <EmailMessage>
                     <From>John@Google.com</From>
                     <Recipients>Naomi@Yahoo.com</Recipients>
                     <CC>Tania@HotMail.com</CC>
                     <Subject>Follow The Sun </Subject>
                     <Body>Breathe, breathe in the air. Set your intentions.Dream with care. </Body>
                 </EmailMessage>
                 <EmailMessage>
                     <From>ron@Google.com</From>
                     <Recipients>Fake@Yahoo.com</Recipients>
                     <Subject>Second Email is best</Subject>
                     <Body>Second Email body...</Body>
                 </EmailMessage>
             </GenericEmailsNotification>
         </GenericXML>'

我想遍历每个EmailMessage节点并提取与此节点/电子邮件（主题，发件人，收件人，正文等）相关的数据，并将其发送到负责发送邮件的存储过程

每个XML都可以发送多封电子邮件（如果直到现在还不清楚..）

我该怎么办？有没有办法循环遍历XML元素？

提前致谢

Answer 1

您可以解析XML并使用cursor：

DECLARE @XMLData XML =          
'<GenericXML>
  <GenericEmailsNotification>
    <EmailMessage>
      <From>John@Google.com</From>
      <Recipients>Naomi@Yahoo.com</Recipients>
      <CC>Tania@HotMail.com</CC>
      <Subject>Follow The Sun </Subject>
      <Body>Breathe,breathe in the air.Set your intentions.Dream with care</Body>
    </EmailMessage>
    <EmailMessage>
      <From>ron@Google.com</From>
      <Recipients>Fake@Yahoo.com</Recipients>
      <Subject>Second Email is best</Subject>
      <Body>Second Email body...</Body>
    </EmailMessage>
  </GenericEmailsNotification>
</GenericXML>' ;

查询：

SELECT  [from]       = s.c.value('(./From)[1]', 'nvarchar(250)')
       ,[Recipients] = s.c.value('(./Recipients)[1]', 'nvarchar(250)')
       ,[CC]         = s.c.value('(./CC)[1]', 'nvarchar(250)')
       ,[Subject]    = s.c.value('(./Subject)[1]', 'nvarchar(250)')
       ,[body]       = s.c.value('(./Body)[1]', 'nvarchar(MAX)')
INTO #Emails       
FROM @XMLData.nodes('/GenericXML/GenericEmailsNotification/EmailMessage')
     AS s(c);

DECLARE cur CURSOR LOCAL FAST_FORWARD FOR 
SELECT [from],[Recipients],[CC],[Subject],[body] FROM #Emails;

DECLARE @from       NVARCHAR(250),
        @recipients NVARCHAR(250),
        @cc         NVARCHAR(250),
        @subject    NVARCHAR(250),
        @body       NVARCHAR(MAX);

OPEN cur;
FETCH NEXT FROM cur INTO @from, @recipients, @cc, @subject, @body;

WHILE @@FETCH_STATUS = 0
BEGIN
   -- send email, pass variables to SP call, handle `NULL` with `ISNULL` if needed
   -- EXEC MailingSystem..SP_SendEmail @Subject = @subject, ...

   SELECT 'Send email in cursor loop:', @from, @recipients, @cc, @subject, @body;

   FETCH NEXT FROM cur INTO @from, @recipients, @cc, @subject, @body;
END

CLOSE cur;
DEALLOCATE cur;

的 LiveDemo

迭代XML节点并在SQL Server中发送电子邮件

1 个答案: