![](/img/trans.png)
[英]How do I insert data into a SET column for a mysql database with jdbc?
[英]How do I insert data from mysql into the combobox?
我的代码在这里出了什么问题?
我正在尝试将mysql中的数据插入netbean中的组合框中
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");
}
}
有时您尝试以这种方式使用Model或使用Vector
会遇到问题。 最好尝试做类似的事情,
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);
DefaultComboBoxModel model = new DefaultComboBoxModel();
while (rs.next()) {
String groupName = rs.getString(4);
model.add(groupName);
}
cmbSemetarID.setModel(model);
rs.close();
} catch (SQLException e) {
System.err.println("Connection Error! it's about date");
}
}
也许你的groupNames.toArray()方法不适合DefaultComboBoxModel()construktor。
您可以尝试将您的项目逐个放入ArrayList中:
DefaultComboBoxModel model = new DefaultComboBoxModel();
for(String groupname : groupNames)
{
model.addElement(groupname);
}
cmbSemetarID.setModel();
多数民众赞成我如何填补我的组合框。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.