每张具有相同结构的表中的一个DAO

public abstract class YourBaseEntityClass {
    private String fooProperty;
    private Long barProperty;
    // + getters and setters
}

public interface Dao<T> {
    T get(Long id);
    // you\'ll probably want more methods here :-)
}

public abstract class GenericRowMapper<T extends YourBaseEntityClass>
implements RowMapper<T> {

    public T mapRow(final ResultSet rs, final int rowNum)
    throws SQLException {
        final T entity = instantiateEntityClass();
        entity.setFooProperty(rs.getString(\"foo\"));
        entity.setBarProperty(rs.getLong(\"bar\"));
        return entity;
    }

    protected abstract T instantiateEntityClass();

}

public class GenericJdbcDao<T> implements Dao<T> {

    private String tableName;
    public void setTableName(final String tableName) {
        this.tableName = tableName;
    }

    private JdbcTemplate jdbcTemplate;
    public void setJdbcTemplate(final JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }

    private RowMapper<T> rowMapper;
    public void setRowMapper(final RowMapper<T> rowMapper) {
        this.rowMapper = rowMapper;
    }

    public T get(final Long id) {
        return jdbcTemplate.queryForObject(
            // please don\'t do it like this, this is just a quick example
            \"select * from \" + tableName + \" where id=\" + id, rowMapper);
    }
}

YourBaseEntityClass

GenericRowMapper