juventusryp (huwen)

想用脚本修改 sql2005 表中数据如何操作

juventusryp — Wed, 14 Nov 2012 00:37:32 +0800


require 'win32ole'

class SqlServer
    # This class manages database connection and queries
    attr_accessor :connection, :data, :fields
    attr_writer :username, :password

    def initialize(host, username = 'sa', password='')
        @connection = nil
        @data = nil
    @host = host
    @username = username
    @password = password
    end

    def open(database)
        # Open ADO connection to the SQL Server database
        connection_string =  "Provider=SQLOLEDB.1;"
        connection_string << "Persist Security Info=False;"
        connection_string << "User ID=#{@username};"
        connection_string << "password=#{@password};"
        connection_string << "Initial Catalog=#{database};"
        connection_string << "Data Source=#{@host};"
        connection_string << "Network Library=dbmssocn"
        @connection = WIN32OLE.new('ADODB.Connection')
        @connection.Open(connection_string)
    end

    def query(sql)
        # Create an instance of an ADO Recordset
        recordset = WIN32OLE.new('ADODB.Recordset')
        # Open the recordset, using an SQL statement and the
        # existing ADO connection
        recordset.Open(sql, @connection)
        # Create and populate an array of field names
        @fields = []
        recordset.Fields.each do |field|
            @fields << field.Name
        end
        begin
            # Move to the first record/row, if any exist
            recordset.MoveFirst
            # Grab all records
            @data = recordset.GetRows
        rescue
            @data = []
        end
        recordset.Close
        # An ADO Recordset's GetRows method returns an array 
        # of columns, so we'll use the transpose method to 
        # convert it to an array of rows
        @data = @data.transpose
    end

    def add_person
        puts "Enter groupname:"
        groupname = gets.chomp
        puts "Enter username:"
        username = gets.chomp
        puts "Enter loginID:"
        loginID = gets.chomp
        puts "Enter password:"
        password = gets.chomp
        db.execute("INSERT INTO dbo.OtherUser (groupname,username,loginID,password)VALUES(?,?,?,?)",groupname,username,loginID,password)
    end




    def close
        @connection.Close
    end
end

db = SqlServer.new('ryp', 'sa', 'dallasryp123')
db.open('TowerBook')
db.add_person
db.query("select * from TowerBook;")
puts field_names = db.fields
cust = db.data
puts cust.size
puts cust[0].inspect
db.close

脚本如上，可是当使用 add_person 时却发生错误 (如下),请教是哪里的问题

D:/ruby/sql.rb:64:in add_person': undefined local variable or methoddb' for # SqlServer:0x2944e18 (NameError) from D:/ruby/sql.rb:77:in `

帮我看看这个脚本怎么用的

juventusryp — Fri, 09 Nov 2012 15:03:22 +0800

网上找了一个这样的代码，但是不知道怎么用，麻烦说的详细一点，本人小白，跪谢！

require 'win32ole'

class SqlServer # This class manages database connection and queries attr_accessor :connection, :data, :fields attr_writer :username, :password

def initialize(host, username = 'sa', password='') @connection = nil @data = nil @host = host @username = username @password = password end

def open(database) # Open ADO connection to the SQL Server database connection_string = "Provider=SQLOLEDB.1;" connection_string << "Persist Security Info=False;" connection_string << "User ID=#{@username};" connection_string << "password=#{@password};" connection_string << "Initial Catalog=#{database};" connection_string << "Data Source=#{@host};" connection_string << "Network Library=dbmssocn" @connection = WIN32OLE.new('ADODB.Connection') @connection.Open(connection_string) end

def query(sql) # Create an instance of an ADO Recordset recordset = WIN32OLE.new('ADODB.Recordset') # Open the recordset, using an SQL statement and the # existing ADO connection recordset.Open(sql, @connection) # Create and populate an array of field names @fields = [] recordset.Fields.each do |field| @fields << field.Name end begin # Move to the first record/row, if any exist recordset.MoveFirst # Grab all records @data = recordset.GetRows rescue @data = [] end recordset.Close # An ADO Recordset's GetRows method returns an array # of columns, so we'll use the transpose method to # convert it to an array of rows @data = @data.transpose end

def close @connection.Close end end

How to use it: db = SqlServer.new('localhost', 'sa', 'SOMEPASSWORD') db.open('Northwind') db.query("SELECT * from Customers;") puts field_names = db.fields cust = db.data puts cust.size puts cust[0].inspect db.close

新手求助 ruby 怎么连接 sql2005

juventusryp — Fri, 09 Nov 2012 11:50:14 +0800

因为需要经常在客户的服务器上修改 sql2005 里的数据，就想能不能用 ruby 写一个小程序，在需要的时候在自己电脑上用小程序就可以连接服务器上的 sql2005 同时修改数据

可是不知道怎么连接 sql2005，因为是新手，求详细点的教程，谢谢~~

求教 rtesseract 安装失败

juventusryp — Mon, 22 Oct 2012 18:37:53 +0800

win7 下使用命令 gem install rtesseract 是如下错误

Building native extensions. This could take a while... ERROR: Error installing rtesseract: ERROR: Failed to build gem native extension.

C:/Ruby186/bin/ruby.exe extconf.rb checking for Ruby version >= 1.8.5... yes 无效驱动器规格。 Unable to get ImageMagick version *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options.

如果使用本地安装命令

G:>gem install rtesseract-0.0.13.gem -l ERROR: Error installing rtesseract-0.0.13.gem: rtesseract requires rmagick (>= 2.10.1, runtime)

是这个错误求大牛指导下该怎么安装

juventusryp (huwen)

想用脚本修改 sql2005 表中数据 如何操作

帮我看看这个脚本怎么用的

新手求助 ruby 怎么连接 sql2005

求教 rtesseract 安装失败

想用脚本修改 sql2005 表中数据如何操作