Question

我试过这个连接数据库。但它没有用。我不明白问题在哪里

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    try{
        String value1 = jTextField5.getText();
        String value2 = jTextField6.getText();
        String value3 = jTextField7.getText();
        String value4 = jTextField10.getText();
        String value5 = jTextField11.getText();
        String value6 = jTextField12.getText();
        String value7 = jTextField1.getText();
        String sql = "update Account  set  Nationality=' "+value1+" ' , Gender=' "+value2+" ' ,Address=' "+value3+" ' , Caste=' "+value4+" ' , Mob=' "+value5+" ' ,Sec_Q=' "+value6+" '  where  Name =' "+value7+" ' "; 

       pst=conn.prepareStatement(sql);
       pst.execute( );
        JOptionPane.showMessageDialog(null, " Profile  updated");
          }
    catch(Exception e)
    {
             JOptionPane.showMessageDialog(null, e);
    }
}

Answer 1

尝试以正确的形式使用PreparedStatement：

 String value1 = jTextField5.getText();
 String value2 = jTextField6.getText();
 String value3 = jTextField7.getText();
 String value4 = jTextField10.getText();
 String value5 = jTextField11.getText();
 String value6 = jTextField12.getText();
 String value7 = jTextField1.getText();
 String sql = "update Account  set  Nationality=? , Gender=? ,Address=? , Caste=? , Mob=? ,Sec_Q=?  where  Name =?"; 

pst=conn.prepareStatement(sql);
pst.setString(1, value1);
pst.setString(2, value2);
pst.setString(3, value3);
pst.setString(4, value4);
pst.setString(5, value5);
pst.setString(6, value6);
pst.setString(7, value7);
pst.execute( );

conn.commit(); //-->>>Don't forget the commit

我的数据库没有使用jdbc连接进行更新

1 个答案: