我试图从J combo Box中选择并使用它来从数据库中查找表格。但反而出现了错误:
我的代码:
JButton btnGo = new JButton("Go!");
btnGo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
Connection conni = null;
ResultSet rs=null;
PreparedStatement pst=null;
try{
Class.forName("org.sqlite.JDBC");
conni = DriverManager.getConnection("jdbc:sqlite://C://Users//Asus//Dropbox//TireShop.sqlite");
String x = comboBox.getSelectedItem().toString();
String sql="select * from " + x;
pst=conni.prepareStatement(sql);
rs=pst.executeQuery();
while(rs.next()){
String name = rs.getString("Namet");
nameofguy.setText(rs.getString(name));
}
}catch(Exception i){
JOptionPane.showMessageDialog(null, i);
}
我正在寻找餐桌..但它说无法找到专栏。
答案 0 :(得分:1)
这是你的问题
File -> Invalidate Cache/Restart
取而代之的是
while(rs.next()){
String name = rs.getString("Namet");
//rs.getString returns Ayaan. So value of name is "Ayaan"
nameofguy.setText(rs.getString(name));
// Youre trying to get the value corresponding to the column Ayaan here
//This is why the exception is thrown as there is no column called Ayaan
}