Question

我已经有了这个代码正在运行...我从MS SQL数据库中读取了表中的一些行，然后为每一行发送了一封电子邮件。

我即将在我的SQL数据库中添加一个“附件”字段，我想在我的身体末尾添加附件。

我有两个问题：1）我应该在MS SQL上使用什么数据类型？（二进制字段，也许）和2）如果其他人有一些示例代码，我真的很感激。

一个额外的问题：在这个脚本的更高级版本上，我首先运行结果集中的所有结果，从消息中获取ID，然后在MS SQL表上更新它们的状态。然后我尝试再次运行相同的结果集，实际执行发送.... 不知怎的，在第二次运行中，我从第1行开始遇到问题，使用的代码与下面的代码相同...有什么最好的方法可以做什么？：我的要求是我必须运行两次结果集。：）

提前致谢。

    Option Public 
    Uselsx "*LSXODBC"

    Sub Initialize
    Dim session As New NotesSession
    Dim db As NotesDatabase
    Dim doc As NotesDocument
    Dim subject As String, cc As String, bcc As String, sender As String, OID As String, mailto As String, bodyNotMIME As String
    Dim body As NotesMIMEEntity


    On Error Goto errorCounter

    Set db = session.CurrentDatabase

    Gosub SendMailGeneral

    Exit Sub

    SendMailGeneral:
    Dim con As New ODBCConnection
    Dim qry As New ODBCQuery
    Dim result As New ODBCResultSet
    Dim defaultQuery As String
    Set qry.Connection = con    
    con.SilentMode = True
    If con.ConnectTo("DSN_Name","USER_NAME", "PASSWORD") Then
        Set result.Query = qry
        defaultQuery = "select TOP (10)  * from Message  where StatusType=0"
        qry.SQL = defaultQuery      
            result.Execute
            If (result.IsResultSetAvailable) Then
                Do


  result.NextRow

                Gosub GetRowFields

                Gosub SendMail

            Loop Until result.IsEndOfData
        End If
        End If
        result.Close(DB_CLOSE)  
        Return
        End Sub


    GetRowFields:
        mailto = result.GetValue("To")
        cc = result.GetValue("CC")
        bcc = result.GetValue("Bcc")
        sender = result.GetValue("Sender")
        subject = result.GetValue("Subject")
        bodyNotMIME = result.GetValue("Body")               
        OID = result.GetValue("OID")

        Return


    SendMail:
            Dim mail As NotesDocument
            Set mail = New NotesDocument(db)
            Dim stream As NotesStream
        Set stream = session.CreateStream

    'Recipients 
        mail.SendTo = mailto
        mail.CopyTo = cc
        mail.BlindCopyTo = bcc

    ' Set all sender-related fields 
        mail.ReplyTo = sender
        mail.Principal = sender
        mail.From = sender
        mail.AltFrom = sender
        mail.SendFrom = sender
        mail.INetFrom = sender
        mail.tmpDisplaySentBy = sender
        mail.tmpDisplayFrom_Preview = sender
        mail.DisplaySent = sender 

    'Body   

        Call stream.WriteText(bodyNotMIME)
        Set body = mail.CreateMIMEEntity
        Call body.SetContentFromText _
        (stream, "text/html; charser=iso-8859-1", ENC_NONE)

    'Subject    
        mail.Subject = subject

    'Send

        Call mail.Send(False, False)

        Return

Answer 1

不是这一行：

result.NextRowcode

应该是：

result.NextRow

我不了解MSSQL，但在DB2中我们经常使用Blob / Clob二进制数据类型来存储任何类型的文件。
我听说许多MSSQL专家建议在文件系统中存储文件，只在数据库中存储路径和文件名。

Answer 2

好的，这是我的Java ScriptLibrary中的缩写代码，它使用JDBC连接到DB2并执行查询（您只需要导入db的jar-s并使用com.microsoft.sqlserver.jdbc.SQLServerDriver进行MS SQL）：

import java.sql.*;
import com.ibm.db2.jcc.DB2Driver;

public class DB2Connection {
    protected String server;
    protected String port;
    protected String dbName;
    protected String userdb2;
    protected String pwddb2;
    protected java.sql.Connection con;


    public DB2Connection( String srv, String port, String db, String user, String pass ){
        this.server = srv;
        this.port = port;
        this.dbName = db;
        this.userdb2 = user;
        this.pwddb2 = pass;

        connectDB2();
    }


    public void connectDB2() {
        try {
            Class.forName("com.ibm.db2.jcc.DB2Driver"); // .newInstance();
            String url = "jdbc:db2://" + server + ":" + port + "/" + dbName;
            con = DriverManager.getConnection(url, userdb2, pwddb2);
            System.out.println("Connection to DB2 succeded");

        } catch (Exception e) {
            System.out.println("Error connecting DB2 Server") ;
            e.printStackTrace();
        }
    }

    protected ResultSet executeQuery( String queryString ) throws SQLException, Exception {
        System.out.println( "Preparing query:\t" + queryString );
        ResultSet rs = null;
        try {
            Statement stmt = con.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
            rs = stmt.executeQuery(queryString);

        } catch (SQLException sqle) {
            String error = ("SQLException : Could not execute query");
            throw new SQLException(error);
        } catch (Exception e) {
            String error1 = ("Exception : An Unknown error occurred.");
            throw new Exception(error1);
        }
        return rs;
    }

    protected int executeCountQuery( StringBuffer queryStr ){
        System.out.println( "Preparing query:\t" + queryStr );
        try {
            ResultSet rs = executeQuery( queryStr.toString( ) );
            rs.next();  //only one row in result set
            return rs.getInt(1);

        } catch (SQLException sqle) {
            System.out.println("SQLException: Could not get ResultSet from DB2Connection.executeQuery");
            sqle.printStackTrace();
        } catch (Exception e) {
            System.out.println("Exception : An Unknown error occurred while calling.");
            e.printStackTrace();
        }
        return 0;
    }

    protected int executeCountQuery( PreparedStatement ps ){
        //System.out.println( "Preparing prepared statement - query:\t" );  //+ ps.getQuery( ) );
        try {
            ResultSet rs = ps.executeQuery( );
            rs.next();  //only one row in result set
            return rs.getInt(1);

        } catch (SQLException sqle) {
            System.out.println("SQLException: Could not get ResultSet from DB2Connection.executeQuery");
            sqle.printStackTrace();
        } catch (Exception e) {
            System.out.println("Exception : An Unknown error occurred while calling.");
            e.printStackTrace();
        }
        return 0;
    }


    public Connection getConnection(){
        return con;
    }
}

要查看使用LS2J直接从您的LotusScript代码中使用Java类的示例，请从Julian Robichaux下载这个伟大的LS2J示例数据库：
http://www.nsftools.com/tips/NotesTips.htm#ls2jexamples

这是一个很好的链接，解释了如何将JDBC与MS SQL服务器一起使用：
http://support.microsoft.com/kb/313100

lotusscript：关于连接SQL DB的一些问题

2 个答案: