错误：MySQL中第1行的“ MEDIUMBLOB”列的数据“ imagen”的数据过长

Question

I'm storing images ranging from 1MB and maximum 7mb in a MySQL database. To do this I created a table with a field MEDIUMBLOB type having a capacity of 16,777,215 bytes which is the same 16mb. When I save images up to 2.2MB it is perfectly stored, but when saving images larger but not exceeding the 7mb get the following error:

com.mysql.jdbc.MysqlDataTruncation: Data truncation: 
Data too long for column 'imagen' at row 1

This is the definition of the image field in my entity image:

@Entity
@Access(AccessType.FIELD)
@Table(name = "Imagen")
@XmlRootElement
public class Imagen implements Serializable {
    // otros campos
    @Lob
    @Column(name = "imagen", columnDefinition = "mediumblob")
    private byte[] imagen;

   // getters and setters
}

My repository class:

public interface ImagenRepository extends BaseRepository<Imagen, Integer> {

    // other query operations

}

Base class repository:

@NoRepositoryBean
public interface BaseRepository<T, ID extends Serializable> extends Repository<T, ID>, Finder<T>, Counter {

    public T save(T save);

    public void delete(ID id);

    public void delete(T entity);

    public Optional<T> findOne(ID id);

}

Image table:

CREATE TABLE Imagen (
    id INT(10) NOT NULL AUTO_INCREMENT,
    -- Otros campos
    imagen MEDIUMBLOB,
    type VARCHAR(10) COLLATE UTF8_SPANISH_CI,
    PRIMARY KEY (id)
);

For query operations and persistence use spring-data-jpa.

I do not understand why not save images of more than 2.2MB, please help

Answer 1

You might need to increase your server settings for innodb_log_file_size in my.cnf. Then restart MySQL.