Java 8 和 JDBC：Access 中的 ODBC 驱动程序

Posted 2023-04-19

【中文标题】Java 8 和 JDBC：Access 中的 ODBC 驱动程序

【英文标题】：Java 8 and JDBC:ODBC Drivers in Access

【发布时间】：2015-01-23 08:23:11

【问题描述】：

从版本 8 开始，Java 不再支持 JDBC:ODBC 驱动程序。 我尝试更改我的应用程序的源代码以使用 UcanAccess Ver.2.0.9.3 但这会引发许多异常，例如：

net.ucanaccess.jdbc.UcanaccessSQLException: unknown token:
---
net.ucanaccess.jdbc.UcanaccessSQLException: unexpected token: AS required: )

这是一个错误代码示例：

    String selectString = "SELECT [Maintenance input Check Due List].InputRepairStation, [Maintenance input Check Due List].[Interval (Mos)], [Maintenance input Check Due List].InputAircraftHours, [Maintenance input Check Due List].InputAircraftLandings,  [Maintenance input Check Due List].Check, [Maintenance input Check Due List].Title, [Maintenance input Check Due List].InputNumber,[Maintenance input Check Due List].InputDescription, [Maintenance input Check Due List].AircraftCurrentTSN, [Maintenance input Check Due List].AircraftCurrentCSN, [Maintenance input Check Due List].Aircraft, [Maintenance input Check Due List].InputDateOUT, [Maintenance input Check Due List].[Interval (Hrs)], [Maintenance input Check Due List].[Interval(Ldgs)], [Maintenance input Check Due List].NextDueCheckMonth, [Maintenance input Check Due List].NextDueCheckHours, [Maintenance input Check Due List].NextDueCheckLdgs, [Maintenance input Check Due List].RemainCheckMonth, [Maintenance input Check Due List].RemainCheckHours,[Maintenance input Check Due List].RemainCheckLdgs, [Maintenance Schedule Check].MSC_Input, [Maintenance input Check Due List].Check "
            + "FROM [Maintenance input table] RIGHT JOIN ([Maintenance Schedule Check] RIGHT JOIN ("
            + "SELECT  [Maintenance input table].InputRepairStation, [Maintenance input table].InputAircraftHours, [Maintenance input table].InputAircraftLandings, [Check Table].Check, [Check Table].Title, [Maintenance input table].InputNumber, [Maintenance input table].InputDescription,[Aircraft].AircraftCurrentTSN,[Aircraft].AircraftCurrentCSN, [Check Table].Aircraft, [Maintenance input table].InputDateOUT,  [Check Table].[Interval (Mos)], [Check Table].[Interval (Hrs)], [Check Table].[Interval(Ldgs)], IIf([Interval (Mos)] Is Null,Null,DateAdd('m',[Interval (Mos)],[InputDateOUT])) AS NextDueCheckMonth, [Interval (Hrs)]+[InputAircraftHours] AS NextDueCheckHours, [Interval(Ldgs)]+[InputAircraftLandings] AS NextDueCheckLdgs, IIf([NextDueCheckMonth] Is Null,Null,DateDiff('d',Now(), [NextDueCheckMonth],1,1)) AS RemainCheckMonth, IIf([NextDueCheckHours] Is Null,Null,[NextDueCheckHours]-[AircraftCurrentTSN]) AS RemainCheckHours, [NextDueCheckLdgs]-[AircraftCurrentCSN] AS RemainCheckLdgs "
            + "FROM (([Aircraft] INNER JOIN [Check Table] ON [Aircraft].AicraftVar = [Check Table].Aircraft) INNER JOIN (((SELECT [Check Aircraft Status].CAS_Check, Max([Maintenance input table].InputDateOUT) AS MaxDeInputDateOUT "
            + "FROM ([Maintenance input table] INNER JOIN [Work Order table] ON [Maintenance input table].InputNumber = [Work Order table].WOInput) "
            + "INNER JOIN [Check Aircraft Status] ON [Work Order table].WONumber = [Check Aircraft Status].CAS_WO "
            + "GROUP BY [Check Aircraft Status].CAS_Check) AS [Maintenance input check wo select] "
            + "INNER JOIN [Maintenance input table] ON [Maintenance input check wo select].MaxDeInputDateOUT = [Maintenance input table].InputDateOUT)  INNER JOIN [Check Aircraft Status] ON [Maintenance input check wo select].CAS_Check = [Check Aircraft Status].CAS_Check) ON [Check Table].Check = [Check Aircraft Status].CAS_Check) INNER JOIN [Work Order table] ON ([Work Order table].WONumber = [Check Aircraft Status].CAS_WO) AND ([Maintenance input table].InputNumber = [Work Order table].WOInput) "
            + "WHERE ((([Check Table].Aircraft)='"
            + ac.getAicraftVAR()
            + "') AND (([Check Table].[Interval (Mos)]) Is Not Null)) "
            + "OR ((([Check Table].Aircraft)='"
            + ac.getAicraftVAR()
            + "') AND (([Check Table].[Interval (Hrs)]) Is Not Null)) "
            + "OR ((([Check Table].Aircraft)='"
            + ac.getAicraftVAR()
            + "') AND (([Check Table].[Interval(Ldgs)]) Is Not Null)) "
            + "ORDER BY [Check Table].[Interval (Mos)]) AS [Maintenance input Check Due List] "
            + "ON [Maintenance Schedule Check].MSC_Check = [Maintenance input Check Due List].Check) "
            + "ON [Maintenance input table].InputNumber = [Maintenance Schedule Check].MSC_Input "
            + "WHERE ((([Maintenance input Check Due List].RemainCheckMonth)<"
            + AircraftList.getMonth()
            + "*30) AND (([Maintenance input table].InputAircraft)='"
            + ac.getAicraftVAR()
            + "' Or ([Maintenance input table].InputAircraft) Is Null)) OR  "
            + "((([Maintenance input Check Due List].RemainCheckHours)<"
            + ac.hoursEstimation * AircraftList.getMonth()
            + ") AND (([Maintenance input table].InputAircraft)='"
            + ac.getAicraftVAR()
            + "' Or ([Maintenance input table].InputAircraft) Is Null)) OR "
            + "((([Maintenance input Check Due List].RemainCheckLdgs)<"
            + ac.ldgsEstimation
            * AircraftList.getMonth()
            + ") AND (([Maintenance input table].InputAircraft)='"
            + ac.getAicraftVAR()
            + "' Or ([Maintenance input table].InputAircraft) Is Null)) "
            + "ORDER BY IIf([RemainCheckMonth] IS Null, IIf([RemainCheckHours] IS Null, IIf([RemainCheckLdgs] IS Null, null, [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30), IIf([RemainCheckLdgs] IS Null, [RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30, IIF([RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30< [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30, [RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30, [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30))), IIf([RemainCheckHours] IS Null, IIf([RemainCheckLdgs] IS Null, RemainCheckMonth, IIF(RemainCheckMonth < [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30, RemainCheckMonth, [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30)), IIf([RemainCheckLdgs] IS Null, IIF(RemainCheckMonth <[RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30, RemainCheckMonth, [RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30), IIf([RemainCheckMonth] < [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30, IIf([RemainCheckMonth] < [RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30, [RemainCheckMonth], [RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30), IIf([RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30<[RemainCheckHours]/"
            + ac.hoursEstimation
            + "*30, [RemainCheckLdgs]/"
            + ac.ldgsEstimation
            + "*30, [RemainCheckHours]/"
            + ac.hoursEstimation + "*30)))))";

这会引发以下异常：

net.ucanaccess.jdbc.UcanaccessSQLException: unexpected token: AS required: )

我的问题如下：

是否有任何解决方案可以找到旧的和坏的但功能强大的 JDBC:ODBC 库，因此我可以将它导入我的代码中？

有没有办法绕过这些异常而不改变查询（里面有很多查询）？

【问题讨论】：

您可以使用 Java 8 与使用您的驱动程序的运行 Java 6 或 7 的服务通信。

你读过 Robert Petermeier 对这个问题的回答吗？ ***.com/questions/14229072/…

我从来没有找到这个帖子。事实上，java应用程序是一种触发器，通过读取存在一个非常大的应用程序的访问数据库来生成一些PDF：我不能改变数据库技术，它是为了咀嚼工作（我认为至少6个月全职）。目前我使用的是 JAVA 7，但我会在听到 java 7 中的“大安全”问题或错误更新之前解决这个问题。

你使用的是 2.0.9.3. ?请附上引发这些错误的 sql 代码，它们可能很容易解决。

@jamadei 我很好奇，所以我将 Java 语句粘贴到 Eclipse 中，让它用一些虚拟值替换 ac.getAicraftVAR() 等，然后转储生成的 SQL 语句。然后我重新格式化并粘贴here。

【参考方案1】：

请尝试将 ucanaccess 发行版中的 hsqldb.jar 替换为当前的 2.3.2。（从 hsqldb 网站下载）。请注意，到 hsqldb 2.3.2 的移植尚未完成，但在您的特定情况下，它可能会起作用。无论如何，感谢 Gord 能够在 ucanaccess 帮助论坛上重现该问题。