获得数据库自动生成的主键
Connectionconn = JdbcUtil.getConnection();
Stringsql = "insert into user(name,password,email,birthday)
? values('abc','123','abc@sina.com','1978-08-08')";
PreparedStatement st =conn.
? prepareStatement(sql,Statement.RETURN_GENERATED_KEYS );
st.executeUpdate();
ResultSet rs =st.getGeneratedKeys();?//得到插入行的主键
if(rs.next())
? System.out.println(rs.getObject(1));
l注:此参数仅对insert操作有效。?