我想执行下列确切SQL查询:如何获取包含在批处理例外
(从处理数据库的读取行转移到PRESENTATION DB一排)
PreparedStatement stmt;
Statement st;
Connection conn = ConnectionManager.getInstance().getConnection(ConnectionManager.PRESENTATION_DB);
try {
conn.setAutoCommit(false);
stmt = conn.prepareStatement(
"insert into customer (name,category,age) values (?,?,?)");
stmt.clearParameters();
stmt.setString(1,"name2");
stmt.setString(2,"cat2");
stmt.setInt(3,25);
stmt.addBatch();
stmt.clearParameters();
stmt.setString(1,"name3");
stmt.setString(2,"cat3");
stmt.setInt(3,25);
stmt.addBatch();
stmt.clearParameters();
stmt.setString(1,"name4");
stmt.setString(2,"cat2");
stmt.setInt(3,25);
stmt.addBatch();
stmt.clearParameters();
stmt.setString(1,"name4");
stmt.setString(2,"cat2");
//stmt.setInt(3,25);
//this is parameter with false input
stmt.setString(3,"null");
stmt.addBatch();
stmt.clearParameters();
stmt.setString(1,"name5");
stmt.setString(2,"cat5");
stmt.setInt(3,25);
stmt.addBatch();
stmt.clearParameters();
int [] updateCounts = stmt.executeBatch();
conn.commit();
conn.setAutoCommit(true);
stmt.close();
conn.close();
}
catch(BatchUpdateException b) {
System.err.println("-----BatchUpdateException-----");
System.err.println("SQLState: " + b.getSQLState());
System.err.println("Message: " + b.getMessage());
System.err.println("Vendor: " + b.getErrorCode());
System.err.print("Update counts: ");
int [] updateCounts = b.getUpdateCounts();
for (int i = 0; i < updateCounts.length; i++) {
System.err.print(updateCounts[i] + " ");
}
System.err.println("");
}
catch (Exception e) {
e.printStackTrace();
}
如何识别导致异常能够在没有这个特定行的情况下重新执行批处理的行? (通过更新行的字段hasError)。
目前我不是通过批量保存对象,因此如果它导致错误并跳过该行并继续处理(即保存/传输和删除)另一行,则可以标记该行。
谢谢!
更新:
好的,我用下面的代码来跟踪行(如果有的话行导致错误):
public static void processUpdateCounts(int[] updateCounts) {
for (int i=0; i<updateCounts.length; i++) {
if (updateCounts[i] >= 0) {
// Successfully executed; the number represents number of affected rows
logger.info("Successfully executed: number of affected rows: "+updateCounts[i]);
} else if (updateCounts[i] == Statement.SUCCESS_NO_INFO) {
// Successfully executed; number of affected rows not available
logger.info("Successfully executed: number of affected rows not available: "+updateCounts[i]);
} else if (updateCounts[i] == Statement.EXECUTE_FAILED) {
logger.info("Failed to execute: "+updateCounts[i]);
// Failed to execute
}
}
}
而且增加了行:
processUpdateCounts(updateCounts);
所以我可以看到有或没有任何错误的变化,但它看起来像BatchUpdateException不起作用?从的BatchUpdateException的的Javadoc
嗨,感谢您的即时回复,我已更新我的问题,并希望能为此输入任何信息,谢谢! – eunique0216 2011-03-08 05:50:24