在PL/SQL中发送带有Blob附件的基于HTML的邮件可以通过以下步骤实现:
CREATE OR REPLACE PROCEDURE send_email_with_blob_attachment (
p_sender IN VARCHAR2,
p_recipient IN VARCHAR2,
p_subject IN VARCHAR2,
p_body IN CLOB,
p_attachment IN BLOB,
p_filename IN VARCHAR2
) AS
l_mail_conn UTL_SMTP.CONNECTION;
l_boundary VARCHAR2(50) := '----=_NextPart_' || DBMS_RANDOM.STRING('X', 20);
l_clob CLOB;
l_blob_len INTEGER;
l_buffer RAW(32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
BEGIN
-- 建立与SMTP服务器的连接
l_mail_conn := UTL_SMTP.OPEN_CONNECTION('your_smtp_server', 25);
-- 启动SMTP会话
UTL_SMTP.HELO(l_mail_conn, 'your_domain');
-- 登录SMTP服务器(如果需要身份验证)
UTL_SMTP.MAIL(l_mail_conn, p_sender);
-- 指定邮件的接收者
UTL_SMTP.RCPT(l_mail_conn, p_recipient);
-- 开始邮件内容
UTL_SMTP.OPEN_DATA(l_mail_conn);
-- 发送邮件头部
UTL_SMTP.WRITE_DATA(l_mail_conn, 'From: ' || p_sender || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'To: ' || p_recipient || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'Subject: ' || p_subject || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'MIME-Version: 1.0' || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'Content-Type: multipart/mixed; boundary="' || l_boundary || '"' || UTL_TCP.CRLF || UTL_TCP.CRLF);
-- 发送邮件正文
UTL_SMTP.WRITE_DATA(l_mail_conn, '--' || l_boundary || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'Content-Type: text/html; charset=UTF-8' || UTL_TCP.CRLF || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, p_body || UTL_TCP.CRLF || UTL_TCP.CRLF);
-- 发送附件
UTL_SMTP.WRITE_DATA(l_mail_conn, '--' || l_boundary || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'Content-Type: application/octet-stream' || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(l_mail_conn, 'Content-Disposition: attachment; filename="' || p_filename || '"' || UTL_TCP.CRLF || UTL_TCP.CRLF);
-- 将Blob数据写入邮件
l_blob_len := DBMS_LOB.GETLENGTH(p_attachment);
WHILE l_pos < l_blob_len LOOP
DBMS_LOB.READ(p_attachment, l_amount, l_pos, l_buffer);
UTL_SMTP.WRITE_RAW_DATA(l_mail_conn, l_buffer, l_amount);
l_pos := l_pos + l_amount;
END LOOP;
-- 结束邮件内容
UTL_SMTP.WRITE_DATA(l_mail_conn, UTL_TCP.CRLF || UTL_TCP.CRLF || '--' || l_boundary || '--');
UTL_SMTP.CLOSE_DATA(l_mail_conn);
-- 关闭SMTP会话
UTL_SMTP.QUIT(l_mail_conn);
EXCEPTION
WHEN OTHERS THEN
-- 处理异常
-- 可以根据需要进行日志记录或错误处理
RAISE;
END;
/
DECLARE
l_attachment BLOB;
BEGIN
-- 从数据库中获取Blob数据
SELECT attachment_blob INTO l_attachment FROM your_table WHERE attachment_id = 123;
-- 调用存储过程发送邮件
send_email_with_blob_attachment(
p_sender => 'sender@example.com',
p_recipient => 'recipient@example.com',
p_subject => 'Test Email with Blob Attachment',
p_body => '<html><body><h1>Hello, World!</h1></body></html>',
p_attachment => l_attachment,
p_filename => 'attachment.txt'
);
END;
/
在上述代码中,你需要根据实际情况修改SMTP服务器的地址、端口号,以及从数据库中获取Blob数据的SQL查询语句。
需要注意的是,以上代码仅适用于Oracle数据库中使用PL/SQL发送带有Blob附件的基于HTML的邮件。对于其他数据库或编程语言,可能需要使用不同的API或库来实现相同的功能。
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