我很想知道为什么会出现这个错误:java.lang.Exception:参数索引超出范围(2>参数个数,即1)。
是的,我使用PreparedStatement
SQL="SELECT pcsv("+servidor_virtual_nuestro+","+nivel_cuenta_receptora+","+codigo_sku[id_componente]+","+t_precio[tipo_precio]+",0) as p_unitario FROM servidores_virtuales t1"+
"WHERE t1.id_servidor_virtual= ? ";
PreparedStatement pstm100 = this.conexion.prepareStatement(SQL);
pstm100.setInt(1, servidor_virtual_nuestro);
ResultSet rs66 = pstm100.executeQuery();
pcsv是我创建的一个程序,所以我不知道为什么我有这个错误,你能帮助我吗?非常感谢
答案 0 :(得分:3)
我没有看到什么会导致抛出异常,但我想这可能是你创建不正确的SQL这一事实的副作用。您的SQL字符串需要t1
和WHERE
之间的空格。
或者它可能是某些变量中的一些额外问号。尝试在执行之前将SQL字符串打印到日志或stdout
。
答案 1 :(得分:-2)
public void ReturnUpdate() {
String sql = "insert into returnbook (`Student Id`,`Student Name`,`Father Name`,Course,Branch,Year,Semester,`Book Id`,`Book Name`,Edition,Publisher,Price,Pages,`Date of Issue`,`Date of Return`) values ";
try{
pst = conn.prepareStatement(sql);
pst.setString (1, jTextField1.getText());
pst.setString (2, jTextField2.getText());
pst.setString (3, jTextField3.getText());
pst.setString (4, jTextField4.getText());
pst.setString (5, jTextField5.getText());
pst.setString (6, jTextField6.getText());
pst.setString (7, jTextField7.getText());
pst.setString (8, jTextField8.getText());
pst.setString (9, jTextField9.getText());
pst.setString (10, jTextField10.getText());
pst.setString (11, jTextField11.getText());
pst.setString (12, jTextField12.getText());
pst.setString (13, jTextField13.getText());
pst.setString(15, ((JTextField)jDateChooser1.getDateEditor().getUiComponent()).getText());
pst.execute();
JOptionPane.showMessageDialog(null,"Book Returned");
}catch(Exception e){
JOptionPane.showMessageDialog(null, e);
}
}