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我在批量使用jdbc preparedStatement时遇到问题,并尝试从此创建生成的密钥。JDBC PreparedStatement,批量更新和生成的密钥
的代码:
PreparedStatement stmt = null;
...
connection.setAutoCommit(false);
stmt = connection.prepareStatement(insertSuspiciousElement,new String[] {"external_id","element_id"});
final int elementBatchSize = 5000;
int elementCount =0;
for(BlSuspiciousElement element : elements){
externalIds.add(element.getExternalId());
stmt.setInt(1, element.getBlElementType().getElementTypeId());
stmt.setString(2, element.getFirstname());
stmt.addBatch();
elementCount++;
if(elementCount % elementBatchSize == 0){
System.out.println("Running query with batch size for suspiciousElement");
stmt.executeBatch();
ResultSet keys = stmt.getGeneratedKeys();
while(keys.next()){
externalIdElementIdMapping.put(keys.getInt("external_id"),keys.getInt("element_id"));
}
keys.close();
stmt.clearBatch();
stmt.clearParameters();
stmt.clearWarnings();
System.out.println("Done query with batch size for suspiciousElement");
}
}
它未能在第一stmt.executeBatch()方法。
错误:
[30/01/12 15:54:41:684 CET] 00000029 RemoteExcepti E CNTR0020E: EJB threw an unexpected (non-declared) exception during invocation of method "processFullFeedForPepAndRelationUpdateOnly" on bean "BeanId(CoRelateEar#AmlKycToolBO.jar#FactivaDBUpdater, null)". Exception data: java.lang.ArrayIndexOutOfBoundsException
at oracle.jdbc.driver.T4CNumberAccessor.unmarshalOneRow(T4CNumberAccessor.java:201)
at oracle.jdbc.driver.T4C8Oall.readRXD(T4C8Oall.java:696)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:340)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1044)
at oracle.jdbc.driver.OraclePreparedStatement.executeForRowsWithTimeout(OraclePreparedStatement.java:10143)
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10249)
at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:230)
at com.ibm.ws.rsadapter.jdbc.WSJdbcStatement.executeBatch(WSJdbcStatement.java:748)
我都不明显...
看来,它不适合批量更新工作?仅用于陈述或准备陈述。在这种情况下,我想我应该尽我批量插入,然后运行另一个查询查找每个创建的元素生成的密钥...
感谢您的帮助,
˚F
这个链接是关于只使用preparedStatement。我的问题是当我试图检索批处理执行的preparedStatement中生成的密钥...稍有不同。 – Farid 2012-01-31 07:48:11
@Farid:你在准备陈述时是否尝试过指定RETURN_GENERATED_KEYS?就像:stmt = connection.prepareStatement(sql,Statement.RETURN_GENERATED_KEYS); – Olaf 2012-01-31 14:17:38
是的,同样的错误。 – Farid 2012-01-31 15:52:46