如何解决org.springframework.jdbc.BadSqlGrammarException：PreparedStatementCallback；

Question

我使用 HSQLDB 作为我的数据库。我想获取最新插入行的主键。为此，我在我的java类中返回了一个查询，如下所示：

final String query = "INSERT INTO polling_log (start_date,status,action) VALUES(CURRENT_TIMESTAMP,?,?); CALL IDENTITY();";
    GeneratedKeyHolder generatedKeyHolder = new GeneratedKeyHolder();
    int update = adapterJdbcTemplate.update(new PreparedStatementCreator() {
        @Override
        public PreparedStatement createPreparedStatement(
                Connection connection) throws SQLException {

            PreparedStatement preparedStatement = connection
                    .prepareStatement(query);
            preparedStatement.setInt(1, pollingLogVO.getStatus());
            preparedStatement.setString(2, pollingLogVO.getAction());
            System.out.println(preparedStatement.getGeneratedKeys().getFetchSize());
            return preparedStatement;
        }
    }, generatedKeyHolder);

    System.out.println("###################### "+ update);

    Number logId = generatedKeyHolder.getKey();
    pollingLogId = logId.intValue();

并存储我使用GenerateKeyHolder的查询。但在运行时我得到一个异常：

org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar []; nested exception is java.sql.SQLException: unexpected token: IDENTITY
    at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:98)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:602)
    at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:817)
    at com.platysgroup.lmex.adapter.moodle.dao.LogDao.insertPollingLog(LogDao.java:36)
    at com.platysgroup.lmex.adapter.MoodlePostingTask.insertPollingLog(MoodlePostingTask.java:134)
    at com.platysgroup.lmex.adapter.MoodlePostingTask.run(MoodlePostingTask.java:55)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
Caused by: java.sql.SQLException: unexpected token: IDENTITY
    at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCPreparedStatement.<init>(Unknown Source)
    at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source)
    at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:248)
    at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:302)
    at com.platysgroup.lmex.adapter.moodle.dao.LogDao$1.createPreparedStatement(LogDao.java:41)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:580)
    ... 6 more
Caused by: org.hsqldb.HsqlException: unexpected token: IDENTITY
    at org.hsqldb.error.Error.parseError(Unknown Source)
    at org.hsqldb.ParserBase.unexpectedToken(Unknown Source)
    at org.hsqldb.ParserCommand.compileStatement(Unknown Source)
    at org.hsqldb.Session.compileStatement(Unknown Source)
    at org.hsqldb.StatementManager.compile(Unknown Source)
    at org.hsqldb.Session.execute(Unknown Source)
    ... 12 more

Answer 1

问题出在这一行（为了清楚起见，将其换行）：

最终字符串查询 =“INSERT INTO polling_log (start_date,status,action) VALUES(CURRENT_TIMESTAMP,?,?); CALL IDENTITY();”;

问题在于 IDENTITY是SQL中的保留字；它已经具有预定义的含义，因此不能像在 CALL 语句中那样使用。 （我不知道它的实际用途是什么；SQL 的完整定义非常庞大，并且有大量保留字。）立即的解决方法是将有问题的单词用双引号引起来（这需要由于位于 Java 字符串中而被反斜杠引用）：

最终字符串查询 = "INSERT INTO polling_log (start_date,status,action) VALUES(CURRENT_TIMESTAMP,?,?); CALL \"IDENTITY\"();";

但是，如果您只是调用要获取插入的行，停止！ 只要让 Spring 为您完成工作，假设您有 JDBC 3.0 或更高版本（即 Java 5 或更高版本）。

Answer 2

据我所知，您不能将多个语句放入一个要执行的字符串中。执行两个单独的操作来代替此操作。

Answer 3

以下链接包含您需要的内容：

http:// /www.devdaily.com/blog/post/jdbc/spring-jdbc-insert-auto- generated-key