小编Jar*_*vis的帖子

我似乎无法用我的JTable中给出的值更新我的数据库.

我的代码:

public void Update() throws SQLException 
{
    for (int a = 0; a < jTable1.getRowCount(); a++) {
        Connection con = DriverManager.getConnection("jdbc:oracle:thin:@//127.0.0.1:1521/xe","IND","pass");
        Statement stmt = con.createStatement();
        String query4 = "insert into MONTH_inv VALUES (?,?,?,?,?)";
        String Category = jTable1.getValueAt(a, 0).toString();  
        String Item = jTable1.getValueAt(a, 1).toString();
        int Quantity = Integer.parseInt((String) jTable1.getValueAt(a, 2));
        int avg = Integer.parseInt((String) jTable1.getValueAt(a, 3));
        int ground = Integer.parseInt((String) jTable1.getValueAt(a, 4));

        PreparedStatement pstmt = con.prepareStatement(query4);
        pstmt.setString(1, Category);
        pstmt.setString(2, Item);
        pstmt.setInt(3, Quantity);
        pstmt.setInt(4, avg);
        pstmt.setInt(5, ground);
        pstmt.executeUpdate();
    }    
} 

一切都运行正常,但当我点击我的GUI上的UPDATE按钮时,我收到错误: …