1. public class Demo

    {
    public static void main(String[] args) {
    try {
    String sql="insert into person values(?,?)";
    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
    Connection conn=DriverManager.getConnection("jdbc:sqlserver://localhost:1433;databaseName=pubs","sa","");
    //需要增加一个Statement.RETURN_GENERATED_KEYS这样的参数
    java.sql.PreparedStatement p=conn.PreparedStatement(sql,Statement.RETURN_GENERATED_KEYS);
    p.setObject(1, "zengguofeef");
    //p.setObject(2, new java.sql.Date(System.currentTimeMillis()));
    //必须这样设置,System.currentTimeMillis()表示当前系统时间的毫秒数,Timestamp()方法会根据这个毫秒数设置成当前时间
    p.setTimestamp(2, new java.sql.Timestamp(System.currentTimeMillis()));
    p.executeUpdate();
    //通过这个方法获取getGeneratedKeys();
    ResultSet rs=p.getGeneratedKeys();
    rs.next();
    int num=rs.getInt(1);
    System.out.println("自动增长列为:"+num);
    } catch (ClassNotFoundException e) {
    e.printStackTrace();
    } catch (SQLException e) {
    e.printStackTrace();
    }
    }
    public static void main(String[] args)
    {
    //在sql语句后面加上一个select scope_identity()
    String sql="insert into person values(?,?) select scope_identity()";
    try {
    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
    Connection conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;databaseName=pubs","sa","");
    java.sql.PreparedStatement p=conn.prepareStatement(sql);
    p.setObject(1, "zengguofeef");
    p.setTimestamp(2, new java.sql.Timestamp(System.currentTimeMillis()));
    //这里使用的是executeQuery()方法,而不是executeUpdate()
    ResultSet rs=p.executeQuery();
    rs.next();
    int num=rs.getInt(1);
    System.out.println("自动增长列为:"+num);
    conn.close();
    } catch (ClassNotFoundException e) {
    e.printStackTrace();
    } catch (SQLException e) {
    e.printStackTrace();
    }
    }
    }