这是我的模型类语法不好SQL异常,而使用读取值的RowMapper
//Model
public class CustomerData {
private String locomotive_id;
private String customer_name;
private String road_number;
private String locomotive_type_code;
private String in_service_date;
private String part_number;
private String emission_tier_type;
private String airbrake_type_code;
private String lms_fleet;
private String aar_road;
private String locomotive_status_code;
// Getters and Setters
这里是我的RowMapper实现
//RowMapper
public class CustomerDataResponseMapper implements RowMapper {
@Override
public Object mapRow(ResultSet rs, int count) throws SQLException {
CustomerData customerData = new CustomerData();
customerData.setLocomotive_id(rs.getString("locomotive_id"));
customerData.setCustomer_name(rs.getString("customer_name"));
customerData.setRoad_number(rs.getString("road_number"));
customerData.setLocomotive_type_code(rs.getString("locomotive_type_code"));
customerData.setIn_service_date(rs.getString("in_service_date"));
customerData.setPart_number(rs.getString("part_number"));
customerData.setEmission_tier_type(rs.getString("emission_tier_type"));
customerData.setAirbrake_type_code(rs.getString("airbrake_type_code"));
customerData.setLms_fleet(rs.getString("lms_fleet"));
customerData.setAar_road(rs.getString("aar_road"));
customerData.setLocomotive_status_code(rs.getString("locomotive_status_code"));
return customerData;
}
}
最后,我得到了我DaoImpl类在这里
//DaoImpl
public String getCustomersData(String locoId, String custName, String roadNumber) {
CustomerData resultSet = null;
String str = "";
if (locoId != null && locoId.length() > 0 && !(locoId.equals("0"))) {
str = "select locomotive_id,customer_name,road_number,model_type as locomotive_type_code,to_char(in_service_date,'yyyy-mm-dd') as in_service_date,loco_part_number as part_number, emission_tier_type as emission_tier_type, "
+ "air_brake_type as airbrake_type_code,lms_fleet,aar_road,locomotive_status_code from get_rdf_explorer.get_rdf_locomotive_detail where locomotive_id = ?";
resultSet = (CustomerData) jdbcTemplate.queryForObject(str, new CustomerDataResponseMapper(), locoId);
} else if ((custName != null && custName.length() > 0)
&& (roadNumber != null && roadNumber.length() > 0 && roadNumber != "0")) {
str = "select locomotive_id,customer_name,road_number,model_type as locomotive_type_code,to_char(in_service_date,'yyyy-mm-dd') as in_service_date,loco_part_number as part_number, emission_tier_type as emission_tier_type, "
+ "air_brake_type as airbrake_type_code,lms_fleet,aar_road,locomotive_status_code from get_rdf_explorer.get_rdf_locomotive_detail where customer_name = ? and road_number= ?";
resultSet = (CustomerData) jdbcTemplate.queryForObject(str, new CustomerDataResponseMapper(), custName, roadNumber);
} else {
str = "select distinct customer_name from get_rdf_explorer.get_rdf_locomotive_detail order by customer_name asc";
resultSet = (CustomerData) jdbcTemplate.queryForObject(str, new CustomerDataResponseMapper());
}
return resultSet.toString();
}
我怎样才能有条件地从resultSet中获取值是基于特定的列是否被pres或者不在结果集中。由于我没有通过我的查询获得所有列。
当特定列不存在于resultSet中时,我正在收到SQL错误的语法异常。例如,当获得不同客户名称的第三个查询得到执行时,在resultSet中,只有customerName将存在,但不包含其他列。
这将非常有帮助。提前致谢。
欢迎来到Stack Overflow!寻求调试帮助的问题(“为什么这个代码不工作?”)必须在问题本身中包含所需的行为,特定的问题或错误以及必要的最短代码**。没有明确问题陈述的问题对其他读者无益。请参阅:[如何创建最小,完整和可验证示例](http://stackoverflow.com/help/mcve)。 –
@JoeC由于这是我的项目特定的代码,我不能发布完整的代码。 –
那么_specific问题或error_?更不用说_ **最短的代码必要_? –