我的代码出了什么问题?如何将数据从mysql插入到组合框中?
我试图从MySQL数据插入到组合框在netbean
private void btnSandoghMousePressed(java.awt.event.MouseEvent evt) {
try {
String query = "SELECT `AccountType` FROM `account`";
con = Connect.ConnectDB();
PreparedStatement stm = con.prepareStatement(query);
pst = con.prepareStatement(query);
ResultSet rs = pst.executeQuery(query);
ArrayList<String> groupNames = new ArrayList<String>();
while (rs.next()) {
String groupName = rs.getString(4);
groupNames.add(groupName);
}
DefaultComboBoxModel model = new DefaultComboBoxModel(groupNames.toArray());
cmbSemetarID.setModel(model);
rs.close();
} catch (SQLException e) {
System.err.println("Connection Error! it's about date");
}
}
模型是否正确填充? – Smutje
是的模型很好,ArrayList groupNames = new ArrayList (); –
你试过这个吗? 'DefaultComboBoxModel model = new DefaultComboBoxModel(); (String groupname:groupNames) { model.addElement(groupname); } ' 您可以将您的结果逐个放入组合框模型中。也许最好是使用groupNames的'.toArray()'方法初始化DefaultComboBoxModel。 – Rubinum