如何从 JdbcTemplate 获取受影响的行数？
How to get number of affected rows from JdbcTemplate?
我正在使用 spring JdbcTemplate 执行 sql 查询：
JdbcTemplate template = new JdbcTemplate(ds);
template.execute(sqlInsert); //returns void
如何获得受影响的行数，因为 execute() 方法 returns 无效？
对于这种情况，您或许可以使用 JdbcTemplate.update()。这将 return 更新或删除的行数。
调用JdbcTemplate的update方法。它会给你受影响的行数作为 return 值。
update
public int update(PreparedStatementCreator psc)
throws DataAccessException
Description copied from interface: JdbcOperations
Issue a single SQL update operation (such as
an insert, update or delete statement) using a
PreparedStatementCreator to provide SQL and any required parameters.
A PreparedStatementCreator can either be implemented directly or
configured through a PreparedStatementCreatorFactory.
Specified by:
update in interface JdbcOperations
Parameters:
psc - object that provides SQL and any necessary parameters
Returns:
the number of rows affected
Throws:
DataAccessException - if there is any problem issuing the update
See Also:
PreparedStatementCreatorFactory
我正在使用 spring JdbcTemplate 执行 sql 查询：
JdbcTemplate template = new JdbcTemplate(ds);
template.execute(sqlInsert); //returns void
如何获得受影响的行数，因为 execute() 方法 returns 无效？
对于这种情况，您或许可以使用 JdbcTemplate.update()。这将 return 更新或删除的行数。
调用JdbcTemplate的update方法。它会给你受影响的行数作为 return 值。
update
public int update(PreparedStatementCreator psc) throws DataAccessExceptionDescription copied from interface:
JdbcOperationsIssue a single SQL update operation (such as an insert, update or delete statement) using a
PreparedStatementCreatorto provide SQL and any required parameters. APreparedStatementCreatorcan either be implemented directly or configured through aPreparedStatementCreatorFactory.Specified by:
update in interfaceJdbcOperationsParameters:
psc - object that provides SQL and any necessary parametersReturns:
the number of rows affectedThrows:
DataAccessException- if there is any problem issuing the updateSee Also:
PreparedStatementCreatorFactory