"UCAExc:::4.0.2 unknown token:" 用于带有日期和时间文字的 INSERT

Posted 2023-04-19

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【中文标题】"UCAExc:::4.0.2 unknown token:" 用于带有日期和时间文字的 INSERT【英文标题】："UCAExc:::4.0.2 unknown token:" for INSERT with date and time literals 【发布时间】：2017-09-20 14:07:43 【问题描述】：

我有一个正在尝试更新的应用程序，因为它使用的是 jdbc 驱动程序 (sun.jdbc.odbc.jdbcodbcdriver)，现在正在使用 Ucanaccess。目前应用程序正确访问数据库，但未能对 Access 数据库进行更改，我认为这可能是由于日期格式或时间格式。

相关，当日期格式从 #01/02/08# 更改为 #01/02/2008# 时，从表中删除行的函数运行成功。

这是查询字符串的输出：

Insert into
follow(
f_c_id,
f_date,
f_time_begin,
f_time_end,
f_flag_begin_in,
f_flag_end_in,
start_map_number,
end_map_number,
b_observer,
map_observer,
start_Map_Time,
end_Map_Time,
f_duration) values (
'ert',
#11/11/1989#,
#11:11#,
#12:12#,
-1,
-1,
1,
21,
'sf',
'sdg',
#12:12#,
#13:13#,
61)

这里是函数的sn-p：

try 

        Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
        conn = DriverManager.getConnection("jdbc:ucanaccess://C:/Data/Example.mdb", "", "");
        stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);

        queryString = "Insert into following (f_c_id, f_date, f_time_begin, f_time_end, " +
                "f_flag_begin_in, f_flag_end_in, start_map_number, end_map_number, b_observer," +
                "map_observer, start_Map_Time, end_Map_Time,f_duration)" +
                " values ('" + IDText.getText() +
                "'," + "#" + focalDate + "#" +
                "," + "#" + focalTimeStart + "#" +
                "," + "#" + focalTimeEnd + "#" +
                "," + startNestCheck + "," + endNestCheck +
                "," + startMapNumText.getText() +
                "," + endMapNumText.getText() +
                ",'" + bObserverText.getText() +
                "','" + mapObserverText.getText() +
                "'," + "#" + startMapTime + "#" +
                "," + "#" + endMapTime + "#" +
                "," + fDuration +
                ")";
        System.out.print(queryString);
        stmt.executeUpdate(queryString);
        conn.close();
     catch (Exception e) 
        if (!(e.getMessage().equalsIgnoreCase("No ResultSet was produced"))) 
            e.printStackTrace();
            System.exit(1);

和堆栈跟踪：

net.ucanaccess.jdbc.UcanaccessSQLException: UCAExc:::4.0.2 unknown token: 
at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:221)
at Test.clearTable(Test.java:2335)
at Test.genericButtonActionPerformed(Test.java:2266)
at Test.access$1200(Test.java:20)
at Test$14.actionPerformed(Test.java:801)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.sql.SQLSyntaxErrorException: unknown token: 
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.JDBCStatement.executeUpdate(Unknown Source)
at net.ucanaccess.jdbc.ExecuteUpdate.executeWrapped(ExecuteUpdate.java:67)
at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:208)
at net.ucanaccess.jdbc.ExecuteUpdate.execute(ExecuteUpdate.java:50)
at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:219)
... 40 more
Caused by: org.hsqldb.HsqlException: unknown token: 
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.ParserBase.read(Unknown Source)
at org.hsqldb.ParserDQL.XreadPredicateRightPart(Unknown Source)
at org.hsqldb.ParserDQL.XreadBooleanPrimaryOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadBooleanTestOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadBooleanFactorOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadBooleanTermOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadBooleanValueExpression(Unknown Source)
at org.hsqldb.ParserDML.compileDeleteStatement(Unknown Source)
at org.hsqldb.ParserCommand.compilePart(Unknown Source)
at org.hsqldb.ParserCommand.compileStatements(Unknown Source)
at org.hsqldb.Session.executeDirectStatement(Unknown Source)
at org.hsqldb.Session.execute(Unknown Source)
... 46 more

Process finished with exit code 1

【问题讨论】：

您不应该将值连接到这样的查询字符串中，而是使用带有参数的准备好的语句。您的代码容易受到 SQL 注入的攻击。相关：***.com/q/21955256/1531971 & ***.com/q/28439400/1531971 UCanAccess SQL Insert failing; query works fine in MS Access unexpected token (UcanaccessStatement.java:222)的可能重复感谢 cmets。我可以考虑遵循准备好的陈述。我觉得错误在于时间格式，但我无法找到答案。我可以使用以类似格式编写的函数删除一行，但如果日期在 #01/01/12# 与 #01/01/2012# 中，则会失败。我也研究了上面的相关问题。 【参考方案1】：

UCanAccess（当前）不识别仅包含小时和分钟的纯时间文字。但是，它确实可以识别包含小时、分钟和秒的文字。

所以这将失败......

UCanAccess>INSERT INTO Table4 (dtmField) VALUES (#11:11#);
UCanAccess>UCAExc:::4.0.2 unknown token:

...但这有效：

UCanAccess>INSERT INTO Table4 (dtmField) VALUES (#11:11:00#);
UCanAccess>1 row(s) affected

同样，它不识别具有两位数年份的日期文字，因此失败...

UCanAccess>INSERT INTO Table4 (dtmField) VALUES (#12/25/17#);
UCanAccess>UCAExc:::4.0.2 unknown token:

...但这成功了：

UCanAccess>INSERT INTO Table4 (dtmField) VALUES (#12/25/2017#);
UCanAccess>1 row(s) affected

【讨论】：

谢谢，我相信这会回答我的问题！

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