jdbc出现错误Before start of result set Query: select *

public class Demo1 {
 @Test
 public void test1(){
  try {
   String sql="select * from user where id=3";
   Connection conn=JdbcUtil.getConnection();
   //创建DbUtils核心工具类对象
   QueryRunner qr=new QueryRunner();
   //查询
   User user=qr.query(conn, sql, new ResultSetHandler<User>(){
    public User handle(ResultSet rs) throws SQLException {
     if(rs.next()){
      User user=new User();
      user.setId(rs.getInt("id"));
      user.setName(rs.getString("name"));
      user.setWorkDate(rs.getString("workDate"));
      user.setAge(rs.getInt("age"));
      return user;
     }
     return null;
    }
   });
   System.out.println(user);
  } catch (SQLException e) {
   e.printStackTrace();
  }
 }

----------------------------------------------缺少红色代码就会出现上面那个错误