如何使用SimpleJdbcInsert和executeBatch与MYSQL JDBC驱动程序生成密钥？

Question

I want to insert multiple records at a time and get the id of each record which is auto-increment. I am doing in following way but getting number of updated rows instead of generated key which is id in this case.

public int[] addPersons(List<Person> persons)
{
   SqlParameterSource[] records= new BeanPropertySqlParameterSource[persons.size()] ;

    int i = 0;
    for (Person person: persons) 
   {
         records[i]= new BeanPropertySqlParameterSource(person);
         i++;   
    }

  SimpleJdbcInsert insertPerson=new SimpleJdbcInsert(dsource).withTableName("PersonTable").usingGeneratedKeyColumns("id");
 int [] ids= insertPerson.executeBatch(records);

  return ids;
}

Here Person is the bean. So how can I get the auto generated key which is id, for the records added ?

Answer 1

Spring JDBC does not allow to retrieve the generated keys when you invoke executeBatch method. This is because internally it invokes executeBatch() method of java.sql.PreparedStatement , which only returns the count of rows affected. An alternate approach would be to execute the insert statement using executeAndReturnKey method multiple times.