Oracle 10 g फ़ॉर्म का उपयोग करके ईमेल कैसे भेजें

मैं मेल भेजने के लिए इस सामान्य प्रक्रिया का उपयोग करता हूं। यह अनुलग्नक (केवल सादा पाठ) का भी समर्थन करता है और मेल 32767 वर्णों तक सीमित नहीं हैं।

अगर आपको अटैचमेंट की बिल्कुल भी आवश्यकता नहीं है, तो इसे हटाने में आपको कोई समस्या नहीं होनी चाहिए।

PRIORITY_HIGH           CONSTANT INTEGER := 1;
PRIORITY_NORMAL         CONSTANT INTEGER := 3;
PRIORITY_LOW            CONSTANT INTEGER := 5;


PROCEDURE SendMail(
    Subject IN VARCHAR2, 
    Message IN OUT CLOB, 
    ToMail IN VARCHAR2,   
    FromMail IN VARCHAR2, FromName IN VARCHAR2,
    Attachment IN OUT CLOB, FileName IN VARCHAR2,
    Priority IN INTEGER DEFAULT PRIORITY_NORMAL) IS

    MIME_BOUNDARY   CONSTANT VARCHAR2(50) := '====Multipart.Boundary.689464861147414354====';
    MIME_MIXED      CONSTANT VARCHAR2(50) := 'multipart/mixed;';
    MIME_TEXT       CONSTANT VARCHAR2(50) := 'text/plain;';
    MIME_HTML       CONSTANT VARCHAR2(50) := 'text/html;';  
    MAIL_HOST       CONSTANT VARCHAR2(50) := '192.168.0.6'; -- try also 'mailhost'

    con UTL_SMTP.connection;
    ret UTL_SMTP.reply;
    Charset VARCHAR2(20);
    Footer VARCHAR2(1000);

    ClobLen PLS_INTEGER;
    amount BINARY_INTEGER := 8192;
    buffer VARCHAR2(16384);
    offset PLS_INTEGER := 1;
    isHTML BOOLEAN := REGEXP_LIKE(DBMS_LOB.SUBSTR(Message, 1000, 1), '<(html)|(body)', 'i');

BEGIN

    SELECT UTL_I18N.MAP_CHARSET(VALUE)
    INTO Charset
    FROM V$NLS_PARAMETERS
    WHERE PARAMETER = 'NLS_CHARACTERSET';

    -- setup mail header
    con := UTL_SMTP.OPEN_CONNECTION(MAIL_HOST, 25);
    ret := UTL_SMTP.helo(con, SYS_CONTEXT('USERENV', 'DB_DOMAIN')); -- assuming your database is in the same domain as your mail server
    ret := UTL_SMTP.Mail(con, FromMail);
    ret := UTL_SMTP.rcpt(con, ToMail);
    -- simply call "UTL_SMTP.rcpt(con, ...);" again in order to add further recipient
    ret := UTL_SMTP.open_data(con);

    IF FromName IS NOT NULL THEN
        UTL_SMTP.write_data(con, 'From: "'||FromName||'" <'||FromMail||'>'||Utl_Tcp.CRLF);
    ELSE
        UTL_SMTP.write_data(con, 'From: <'||FromMail||'>'||Utl_Tcp.CRLF);
    END IF;
    UTL_SMTP.write_data(con, 'To: <'||ToMail||'>'||Utl_Tcp.CRLF);
    --  UTL_SMTP.write_data(con, 'Cc: <'||CcMail||'>'||Utl_Tcp.CRLF);       
    UTL_SMTP.write_data(con, 'Subject: '||Subject||Utl_Tcp.CRLF);
    UTL_SMTP.write_data(con, 'X-Priority: '||Priority||Utl_Tcp.CRLF);

    IF Attachment IS NOT NULL AND FileName IS NOT NULL THEN
        UTL_SMTP.write_data(con, 'Mime-Version: 1.0' || Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, 'Content-Type: '||MIME_MIXED||' boundary="'||MIME_BOUNDARY||'"' || Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, 'This is a multipart message in MIME format.' || Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, '--'||MIME_BOUNDARY || Utl_Tcp.CRLF);
    END IF;

    Footer := 'Message from '||SYS_CONTEXT('USERENV', 'DB_NAME')||' sent at '||TO_CHAR(SYSDATE,'yyyy-mm-dd hh24:mi:ss');
    IF isHTML THEN
        UTL_SMTP.write_data(con, 'Content-type: '||MIME_HTML||' charset='||Charset || Utl_Tcp.CRLF);
        Message := REPLACE(message, '</body>', '<p>'||Footer||'</p></body>');
    ELSE 
        UTL_SMTP.write_data(con, 'Content-type: '||MIME_TEXT||' charset='||Charset || Utl_Tcp.CRLF);
    END IF;

    -- Mail Body
    UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
    ClobLen := DBMS_LOB.GETLENGTH(Message);
    LOOP
        EXIT WHEN offset > ClobLen;
        DBMS_LOB.READ(Message, amount, offset, BUFFER);
        UTL_SMTP.write_raw_data(con, UTL_RAW.cast_to_raw(BUFFER));
        offset := offset + amount;
    END LOOP;   
    UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
    IF NOT isHTML THEN
        UTL_SMTP.write_data(con, Utl_Tcp.CRLF || Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, Footer);
        UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
    END IF;

    IF Attachment IS NOT NULL AND FileName IS NOT NULL THEN
        -- Mail Attachment
        UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, '--'||MIME_BOUNDARY || Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, 'Content-Type: '||MIME_TEXT||' name="'||Filename||'"'|| Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, 'Content-Disposition: attachment; filename="'||Filename||'"'|| Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, Utl_Tcp.CRLF);

        offset := 1;
        ClobLen := DBMS_LOB.GETLENGTH(Attachment);
        LOOP
            EXIT WHEN offset > ClobLen;
            DBMS_LOB.READ(Attachment, amount, offset, BUFFER);
            UTL_SMTP.write_raw_data(con, Utl_Raw.cast_to_raw(BUFFER));
            offset := offset + amount;
        END LOOP;
        UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
        UTL_SMTP.write_data(con, '--'||MIME_BOUNDARY||'--' || Utl_Tcp.CRLF);
    END IF;

    -- finish mail
    ret := UTL_SMTP.close_data(con);
    ret := UTL_SMTP.quit(con);

EXCEPTION
    WHEN UTL_SMTP.TRANSIENT_ERROR OR UTL_SMTP.PERMANENT_ERROR THEN
        UTL_SMTP.quit(con);
        RAISE;
END SendMail;

बस एक नोट, याद न करें UTL_SMTP.write_data(con, UTL_TCP.CRLF) लाइनें। वे बेमानी दिख रहे हैं, हालांकि उनमें से अधिकांश की आवश्यकता है! साथ ही शिष्टाचार संदेश जैसे "यह MIME प्रारूप में एक मल्टीपार्ट संदेश है।" संलग्नक के मामले में आपके मेल के उचित प्रदर्शन के लिए आवश्यक है।

यदि आप अभी भी समस्याओं का सामना कर रहे हैं तो एक dbms_output.put_line(ret.code||': '||ret.text); बनाएं प्रत्येक समारोह के बाद UTL_SMTP पर कॉल करें।

यहां वही प्रक्रिया है लेकिन आपकी आवश्यकताओं के लिए कम है:

FUNCTION SendMail(
    Subject IN VARCHAR2, 
    Message IN VARCHAR2, 
    FromMail IN VARCHAR2, FromName IN VARCHAR2, 
    ToMail IN VARCHAR2) RETURN VARCHAR2 IS

    MIME_TEXT       CONSTANT VARCHAR2(50) := 'text/plain;';
    MIME_HTML       CONSTANT VARCHAR2(50) := 'text/html;';  
    MAIL_HOST       CONSTANT VARCHAR2(50) := '192.168.0.6'; -- try also 'mailhost'

    con UTL_SMTP.connection;
    ret UTL_SMTP.reply;
    Charset VARCHAR2(20);
    isHTML BOOLEAN := REGEXP_LIKE(DBMS_LOB.SUBSTR(Message, 1000, 1), '<(html)|(body)', 'i');

BEGIN

    SELECT UTL_I18N.MAP_CHARSET(VALUE)
    INTO Charset
    FROM V$NLS_PARAMETERS
    WHERE PARAMETER = 'NLS_CHARACTERSET';

    -- setup mail header
    con := UTL_SMTP.OPEN_CONNECTION(MAIL_HOST, 25);
    ret := UTL_SMTP.helo(con, SYS_CONTEXT('USERENV', 'DB_DOMAIN')); -- assuming your database is in the same domain as your mail server
    ret := UTL_SMTP.Mail(con, FromMail);
    ret := UTL_SMTP.rcpt(con, ToMail);
    ret := UTL_SMTP.open_data(con);

    UTL_SMTP.write_data(con, 'From: "'||FromName||'" <'||FromMail||'>'||Utl_Tcp.CRLF);
    UTL_SMTP.write_data(con, 'To: <'||ToMail||'>'||Utl_Tcp.CRLF);
    UTL_SMTP.write_data(con, 'Subject: '||Subject||Utl_Tcp.CRLF);
    UTL_SMTP.write_data(con, 'X-Priority: 3'||Utl_Tcp.CRLF);

    IF isHTML THEN
        UTL_SMTP.write_data(con, 'Content-type: '||MIME_HTML||' charset='||Charset || Utl_Tcp.CRLF);
    ELSE 
        UTL_SMTP.write_data(con, 'Content-type: '||MIME_TEXT||' charset='||Charset || Utl_Tcp.CRLF);
    END IF;

    -- Mail Body
    UTL_SMTP.write_data(con, Utl_Tcp.CRLF);
    UTL_SMTP.write_raw_data(con, UTL_RAW.cast_to_raw(Message));
    UTL_SMTP.write_data(con, Utl_Tcp.CRLF);

    -- finish mail
    ret := UTL_SMTP.close_data(con);
    ret := UTL_SMTP.quit(con);
    RETURN '0';    
EXCEPTION
    WHEN UTL_SMTP.TRANSIENT_ERROR OR UTL_SMTP.PERMANENT_ERROR THEN
        UTL_SMTP.quit(con);
        RETURN SQLERRM;
END SendMail;