jdbcTemplate.update用于自动递增的唯一ID字段

Question

I have an EMPLOYEE table that has 4 fields; ID , NAME , AGE , SALARY . ID is unique and auto-increment.

Below is the code to insert a row in the table, using Spring's JDBCTemplate . Please suggest, how can I auto increment ID field.

String sql = "insert into employee values (?,?,?,?)"
jdbcTemplate.update( sql, ID, bean.getName(), bean.getAge(), bean.getSalary())

Answer 1

I see, you tag your question Oracle , use Oracle sequence then.

String sql = "insert into Employee values (id_seq.nextval, ?, ?, ?)";
jdbcTemplate.update(sql, bean.getName(), bean.getAge(), bean.getSalary());

Ref: How to create Sequence in Oracle .

Answer 2

Just add following code to your domain: Ref: http://docs.spring.io/spring/docs/2.5.x/reference/jdbc.html#jdbc-auto-genereted-keys

import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.jdbc.support.KeyHolder;

final String INSERT_SQL = "insert into my_test (name) values(?)";
                final String name = "Rob";
                KeyHolder keyHolder = new GeneratedKeyHolder();
                jdbcTemplate.update(
                        new PreparedStatementCreator() {
                            public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {
                                PreparedStatement ps =
                                        connection.prepareStatement(INSERT_SQL, new String[] {"id"});
                                ps.setString(1, name);
                                return ps;
                            }
                        },
                        keyHolder);