在Enum字段（DB）中插入字符串值（java）获取“数据截断列”

Question

In my mysql table there is one enum field 'spe_gender'.

mysql> desc tbl_sswltdata_persons;
+-----------------+-----------------------+------+-----+---------+----------------+
| Field           | Type                  | Null | Key | Default | Extra          |
+-----------------+-----------------------+------+-----+---------+----------------+
| spe_id          | bigint(20) unsigned   | NO   | PRI | NULL    | auto_increment |
| spe_sen_id      | bigint(20) unsigned   | NO   | MUL | NULL    |                |
| spe_gender      | enum('male','female') | YES  |     | NULL    |                |
| spe_is_deceased | tinyint(1)            | NO   |     | 0       |                |
| spe_birth_place | varchar(255)          | YES  |     | NULL    |                |
| spe_create_date | datetime              | YES  |     | NULL    |                |
| spe_update_date | datetime              | YES  |     | NULL    |                |
+-----------------+-----------------------+------+-----+---------+----------------+
7 rows in set (0.00 sec)

So I created one POJO class as:

public class SswltdataPersons implements Serializable {
    private static final long serialVersionUID = 1L;

    private long spe_id;
    private long spe_sen_id;
    private String spe_gender;
    private String spe_is_deceased;
    private String spe_birth_place;
    private String spe_create_date;
    private String spe_update_date;

    // .........

    public String getSpe_gender() {
        return spe_gender;
    }
    public void setSpe_gender(String spe_gender) {
        this.spe_gender = spe_gender;
    }

    // ......

}

When I trying to write data into this table I am getting an exception

org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL 
    [INSERT INTO iwpro_imp.tbl_sswltdata_persons VALUES(?,?,?,?,?,?,?)]; 
    Data truncated for column 'spe_gender' at row 1; nested exception is java.sql.BatchUpdateException: Data truncated for column 'spe_gender' at row 1

I think the issue is While inserting String value (through java) in Enum field (in DB). Here is my methods where I am getting Exception.

@Transactional(value="transactionManager_iwpro_imp", rollbackFor = Exception.class)
    public void saveAllPersons(final List<SswltdataPersons> list) {


        String sql = "INSERT INTO iwpro_imp.tbl_sswltdata_persons VALUES(?,?,?,?,?,?,?)";

        try{
            jdbcTemplate.update("SET foreign_key_checks = 0");

            List<List<SswltdataPersons>> batchLists = Lists.partition(list, batchSize);

            for(final List<SswltdataPersons> batch : batchLists) {
                BatchPreparedStatementSetter bpss = new BatchPreparedStatementSetter() {
                    @Override
                    public void setValues(PreparedStatement ps, int index) throws SQLException {
                        SswltdataPersons dataObject = batch.get(index);
                        ps.setLong(1, dataObject.getSpe_id());
                        ps.setLong(2, dataObject.getSpe_sen_id());
                        ps.setString(3, dataObject.getSpe_gender());
                        ps.setString(4, dataObject.getSpe_is_deceased());
                        ps.setString(5, dataObject.getSpe_birth_place());
                        ps.setString(6, dataObject.getSpe_create_date());
                        ps.setString(7, dataObject.getSpe_update_date());
                    }

                    @Override
                    public int getBatchSize() {
                        return batch.size();
                    }
                };
                jdbcTemplate.batchUpdate(sql, bpss);
            }

            jdbcTemplate.update("SET foreign_key_checks = 1");

        }catch(Exception e){
            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            logger.error("\n\nUnexpected Exception:\n", e);
            e.printStackTrace();
        }
    }

Can't I insert this enum value in DB?

Answer 1

In your java code, declare spe_gender as an Enum type

private Gender spe_gender

where Gender is an Enum class

public enum Gender {
    MALE,
    FEMALE
}

Answer 2

In order to answer that, you would have to give an example of the data actually being inserted.

Anyway, regarding the exception that you get, you're most likely not inserting "male" or "female", since it says "Data truncated for column 'spe_gender' at row 1" it means that the data you're inserting differs, and is in fact bigger (as in more characters) than the allowed one.

Also, check if there's an actual method to insert enums rather than "setString". -> EDIT: it does not

Answer 3

Thanks Mick Mnemonic for the suggestion. It worked.

replacing

ps.setString(3, dataObject.getSpe_gender().isEmpty());

with

ps.setString(3, dataObject.getSpe_gender().isEmpty() ? null : dataObject.getSpe_gender());

worked for me. Thanks all.