用Python创建jTDS连接字符串

Question

我正在尝试使用Python建立jTDS连接。任何人都可以帮助我实现这一目标吗？

通常从SQL Server使用以下连接字符串进行连接：

jdbc:jtds:sqlserver://DBServer:port/DBInstance;useNTLMv2=true;domain=Domain

我正在尝试在Python中执行以下操作：

import pyodbc
conn = pyodbc.connect('Driver={SQL Server};'
                      'Server=DBName,port;'
                      'Database=database;'
                      'Truster_Connection=yes;'
                      'uid=user;'
                      'pwd=password;'
                )

cursor = conn.cursor()
cursor.execute('SELECT * from Table')

for row in cursor:
    print(row)

错误：

pyodbc.InterfaceError: ('28000', "[28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'USER'. (18456) (SQLDriverConnect); [28000] [Microsoft][ODBC SQL Server Driver]Invalid connection string attribute (0); [28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'USER'. (18456); [28000] [Microsoft][ODBC SQL Server Driver]Invalid connection string attribute (0)"))

Answer 1

如果您专门尝试使用jTDS（而不是ODBC）连接到MS SQL Server，则可以使用jaydebeapi python软件包。

请参见以下代码（Python 3）：

import sys
import jaydebeapi


def main():
    try:
        # jTDS Driver.
        driver_name = "net.sourceforge.jtds.jdbc.Driver"

        # jTDS Connection string.
        connection_url = "jdbc:jtds:sqlserver://<server_hostname>:<port>/<database_name>"

        # jTDS Connection properties.
        # Some additional connection properties you may want to use
        # "domain": "<domain>"
        # "ssl": "require"
        # "useNTLMv2": "true"
        # See the FAQ for details http://jtds.sourceforge.net/faq.html
        connection_properties = {
            "user": "username",
            "password": "password",
        }

        # Path to jTDS Jar
        jar_path = "<path_to>\\jtds-1.3.1.jar"

        # Establish connection.
        connection = jaydebeapi.connect(driver_name, connection_url, connection_properties, jar_path)
        cursor = connection.cursor()

        # Execute test query.
        cursor.execute("select 1 as test_connection")
        res = cursor.fetchall()
        if res:
            print(str(res))  # Should print [(1,)]

    except Exception as err:
        print(str(err))


if __name__ == "__main__":
    sys.exit(main())

在此之前，您需要完成以下步骤：

1. [从here下载并安装JDK / JRE
2. pip安装jaydebeapi或从here下载
3. 从here下载jtds
4. 更新connection_url，connection_properties，jar_path。