获得数据库自动生成的主键

示例：

packagecom.hbsi.test;

importjava.sql.Connection;

importjava.sql.PreparedStatement;

importjava.sql.ResultSet;

importjava.sql.SQLException;

importjava.sql.Statement;

importcom.hbsi.utils.DBManager;

public class Demo4{

      /**

       *@param args

       */

      public static void main(String[] args) {

           // TODO Auto-generated method stub

           Connection con=null;

           PreparedStatement st=null;

           ResultSet rs=null;

           try {

                 con=DBManager.getConnection();

                 String sql="insert intousers (name,password) values (?,?)";

                 st=con.prepareStatement(sql);

                 st.setString(1,"Jerry");

                 st.setString(2,"QAZ");

                 st.executeUpdate();

                 rs=st.getGeneratedKeys();//结果集单行单列

                 if(rs.next()){

                      System.out.println(rs.getInt(1));

                 }

           } catch (SQLException e) {

                 // TODO Auto-generated catchblock

                 e.printStackTrace();

           } finally{

        &