更新MySQL數據庫中的數據

我想更新MySQL數據庫中的數據，例如權重（2.150Kg）。更新MySQL數據庫中的數據

這是我在NetBeans中使用的代碼：

connectDB(); 
    try{ 

     String value1 = txt_search_code.getText(); 
     String value2 = txt_item_code.getText(); 
     String value3 = txt_discription.getText(); 
     String value4 = txt_bin_balance.getText(); 
     String value5 = txt_date.getText(); 
     String value6 = txt_issued_quantaty.getText(); 
     String value7 = txt_issued_inno.getText(); 
     String value8 = txt_arrived_quantaty.getText(); 
     String value9 = txt_arrived_inno.getText(); 
     String value10 = txt_final_bin_balance.getText(); 

     String sql = "Update tbl_codes set No='"+value1+"',ITEM_CODE='"+value2+"',DISCRIPTION='"+value3+"',PREVIOUS_BIN_BALANCE='"+value4+ 
        "',DATE='"+value5+"',ISSUED_QUANTATY='"+value6+"',ISSUED_INVOICE_NO='"+value7+"',ARRIVED_QUANTATY='"+value8+"',ARRIVED_INVOICE_NO='"+value9+"',FINAL_BINCARD_BALANCE='"+value10+"'WHERE No='"+value1+"' "; 
     PreparedStatement pstmt = con.prepareStatement(sql); 
     pstmt.execute(); 
     JOptionPane.showMessageDialog(null, " Your new records Updated Succsessfully!!"); 

    }catch(Exception e){ 

     JOptionPane.showMessageDialog(null,e); 
    } 

    closeDB();

這是SQL update語句：

SELECT 
`tbl_stock`.`No`, 
`tbl_stock`.`ITEM_CODE`, 
`tbl_stock`.`DISCRIPTION`, 
`tbl_stock`.`PREVIOUS_BIN_BALANCE`, 
`tbl_stock`.`DATE`, 
`tbl_stock`.`ISSUED_QUANTATY`, 
`tbl_stock`.`ISSUED_INVOICE_NO`, 
`tbl_stock`.`ARRIVED_QUANTATY`, 
`tbl_stock`.`ARRIVED_INVOICE_NO`, 
`tbl_stock`.`FINAL_BINCARD_BALANCE` 
FROM `db_biling`.`tbl_stock`;

我怎樣才能更新的重量？

來源

2017-09-11 Thinith Madara

什麼是您的數據庫名稱？由於所有數據都在同一個表中，因此不需要創建'tbl_stock' –

'JOptionPane.showMessageDialog（null，e）;'的任何消息' ？ –

嘗試使用executeUpdate()而不是。但是你的代碼需要改進很多。檢查我的樣本代碼

String sql = "Update tbl_codes set No= ?,ITEM_CODE=?,DISCRIPTION=?,PREVIOUS_BIN_BALANCE=? 
        ,DATE=?,ISSUED_QUANTATY=?,ISSUED_INVOICE_NO=?,ARRIVED_QUANTATY=?,ARRIVED_INVOICE_NO=?,FINAL_BINCARD_BALANCE=? WHERE No=?"; 
PreparedStatement pstmt = con.prepareStatement(sql); 
pstmt.setString(1, value1); 
pstmt.setString(2, value2); 
pstmt.setString(3, value3); 
pstmt.setString(4, value4); 
pstmt.setString(5, value5); 
pstmt.setString(6, value6); 
pstmt.setString(7, value7); 
pstmt.setString(8, value8); 
pstmt.setString(9, value9); 
pstmt.setString(10, value10); 
pstmt.setString(11, value1); 
pstmt.executeUpdate();

如果使用PreparedStatement，使用?而不將值到SQL，像'"+value1+"'的。使用?更清晰，更安全。

來源

2017-09-11 02:17:41

更新MySQL數據庫中的數據

回答

相關問題