Question

我正在编写一个程序，我想从jtable中删除所选行，这必须通过使用java的存储过程来完成。 Ι创建以下存储过程（mssql）：

USE [Lab]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[usp_member_delete]
    -- Add the parameters for the stored procedure here
    @members_id int
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here
delete from members where Members_id=@members_id
END

调用程序的java代码

 private void cmdDeleteActionPerformed(java.awt.event.ActionEvent evt) {                                          
        if(!jTable2.getSelectionModel().isSelectionEmpty()){
        int click=JOptionPane.showConfirmDialog(this,"Are you sure","Confirm",JOptionPane.YES_NO_OPTION);
        if(click==JOptionPane.YES_OPTION)

        try {
       Connect c=new Connect();
       Connection con=c.start();
       //Statement ps=con.createStatement();
       CallableStatement ps=con.prepareCall ("{call usp_member_delete(?,?)}");
       int index []=jTable2.getSelectedRows();
       for (int i=0;i<index.length;i++)
       {String id=""+jTable2.getValueAt(index[i], 0);
       //ps.execute("delete from members where member_id="+id);
       ps.executeUpdate(id);
         c.stop();
       }

     DefaultTableModel mod=(DefaultTableModel)jTable2.getModel();
     for (int i=0;i<index.length;i++)
     mod.removeRow(index [i]-i);

     }catch (Exception e){JOptionPane.showMessageDialog(this, e);}
    }                                         
    }

我得到错误的方法executequery（）不能在preparestatement或callablestatement上获取参数。请问建议吗？提前感谢您的回答 Elpiniki

Answer 1

我已阅读它并且我已经为其他目的创建了连接，例如insert.T（作为代码后面的示例）private void jButton1ActionPerformed（java.awt.event.ActionEvent evt）{

 String name=jTextField2.getText();
 String email =jTextField3.getText();
 String site=jTextField4.getText();
 String cv=jTextArea2.getText();
 String category =jComboBox2.getSelectedItem().toString();
  try
{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

     try (Connection con = DriverManager.getConnection("jdbc:sqlserver://127.0.0.1\\ELPINIKI-TOSH\\SQLEXPRESS:1433;databaseName=Lab","sa","fir3w@ll")) {

         CallableStatement ps=con.prepareCall ("{call usp_member_insert(?,?,?,?,?,?,?)}");
         ps.registerOutParameter("Members_id", java.sql.Types.INTEGER);
         ps.setString(2,name);
         ps.setString(3,email);
         ps.setString(4,site);
         ps.setString(5,cv);
         ps.setString(6,category);
         ps.registerOutParameter("MemberCategory_id",java.sql.Types.INTEGER);

         int x=0; x=ps.executeUpdate();
         if (x!=0);
         JOptionPane.showMessageDialog(this, "Data inserted");

         jTextField2.setText("");
         jTextField3.setText("");
         jTextField4.setText("");
         jComboBox2.setSelectedIndex(0);
         jTextArea2.setText("");
       con.close();  
     }
}catch(ClassNotFoundException | SQLException e)
{
System.out.println(e);
}
}

问题在于我附加的上一个代码。我使用行选择，我想使用该过程删除该行。谢谢

方法executequery（）不能在callablestatement上接受参数

1 个答案: