JDBC 带参数操作

/--
     - 带参查询
     -/
    public void pare(){
        String sql = "select - from studentInfo where s_id = ?" ;
        try {
            
            ps = getConn().prepareStatement(sql);
            ps.setString(1, "张三");  //传参
            rs = ps.executeQuery(); 
                        //需要注意ps.executeQuery()不需要填写sql不然报错ORA-01008: 并非所有变量都已绑定
            System.out.println(1);
            while(rs.next()){
                System.out.println(rs.getString(1)+rs.getString(2));
                
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }