在GUI中向comboBox添加数据 [英] Adding data to comboBox in GUI
问题描述
我试图在我的服务器GUI中填充一些数据的组合框。具体来说，我想添加注册到服务器的客户端的ID。
我必须实现它错了，因为在gui的initialize（）方法后的更改不适用。
我复制这里涉及的代码： / p>
在服务器中：
服务器实现ServerInterface {
private static List< ClientInterface>客户;
static ServerGui gui;
public Server（）throws RemoteException
{
super（）;
clients = new ArrayList< ClientInterface>（）;
gui = new ServerGui（）;
}
* ....其他方法不涉及.... *
public static void main（String [] args）
{
try {
Server statsServer = new Server（）;
ServerInterface stub =（ServerInterface）UnicastRemoteObject.exportObject（statsServer，1099）;
注册表r = LocateRegistry.createRegistry（1099）;
r.rebind（aaa，stub）;
System.out.println（Server ready）;
//gui.fullCombobox (clients）;
gui.main（null）;
}
/ *如果任何通信失败... * /
catch（RemoteException e）{
System.out.println（Communication error+ e.toString ））;
}
}
}
/ strong>
import java.awt.EventQueue;
public class ServerGui {
private JFrame frame;
public JComboBox< String>组合框;
/ **
*启动应用程序。
* /
public static void main（String [] args）{
EventQueue.invokeLater（new Runnable（）{
public void run（）{
try {
ServerGui window = new ServerGui（）;
window.frame.setVisible（true）;
} catch（Exception e）{
e.printStackTrace（）;
}
}
}）;
}
/ **
*创建应用程序。
* /
public ServerGui（）{
initialize（）;
}
/ **
*初始化框架的内容。
* /
private void initialize（）{
frame = new JFrame（）;
frame.setBounds（100，100，725，487）;
frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
frame.getContentPane（）。setLayout（null）;
comboBox = new JComboBox（）;
ComboBox.addItem（ciao）;
comboBox.addItem（miao）;
comboBox.setBounds（162，113，182，38）;
frame.getContentPane（）。add（comboBox）;
}
public void fullCombobox（List< ClientInterface> lista）throws RemoteException
{
Iterator< ClientInterface> it = lista.iterator（）;
while（it.hasNext（））
{
ClientInterface c =（ClientInterface）it.next（）;
Integer i = c.getId（）;
comboBox.addItem（i.toString（））;
}
}
}
当我调用Server方法通过客户端，我在它的末端调用fullComboBox方法。我想组合框会自动重新加载，但它不会改变。
似乎所有我做后initialize（）方法不工作。 / p>
我该如何解决？
我是按照正确的方式做一个服务器的gui吗？我有一些疑问，如果把一个gui对象内部的服务器（如我一样）或把一个服务器内的gui。我真的很困惑。
先感谢所有人。
p>从查看你的代码很快，似乎你甚至没有调用方法
public void fullCombobox（List< ClientInterface> lista）throws RemoteException {}
您忘记在代码中显示调用或者是错误这使你认为这是一个问题的JComboBox。
I'm trying to populate a comboBox in my server GUI with some data. Specifically, i would like to add the id of the clients registered to the Server. I must have implemented it wrong, because changes after the initialize() method of the gui don't apply.
I copy here the involved code:
In server:
public class Server implements ServerInterface {
private static List<ClientInterface> clients;
static ServerGui gui;
public Server() throws RemoteException
{
super();
clients = new ArrayList<ClientInterface>( );
gui = new ServerGui();
}
*.... other methods not involved ....*
public static void main(String[] args)
{
try {
Server statsServer = new Server();
ServerInterface stub = (ServerInterface) UnicastRemoteObject.exportObject(statsServer, 1099);
Registry r=LocateRegistry.createRegistry(1099);
r.rebind("aaa", stub);
System.out.println("Server ready");
//gui.fullCombobox(clients);
gui.main(null);
}
/* If any communication failures occur... */
catch (RemoteException e) {
System.out.println("Communication error " + e.toString());
}
}
}
In GUI
import java.awt.EventQueue;
public class ServerGui {
private JFrame frame;
public JComboBox<String> comboBox;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ServerGui window = new ServerGui();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public ServerGui() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 725, 487);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
comboBox = new JComboBox();
comboBox.addItem("ciao");
comboBox.addItem("miao");
comboBox.setBounds(162, 113, 182, 38);
frame.getContentPane().add(comboBox);
}
public void fullCombobox(List <ClientInterface> lista) throws RemoteException
{
Iterator<ClientInterface> it= lista.iterator();
while(it.hasNext())
{
ClientInterface c = ( ClientInterface ) it.next();
Integer i = c.getId();
comboBox.addItem(i.toString());
}
}
}
When i invoke a Server method through Client, i invoke at the end of it the fullComboBox method too. I supposed the combobox would reload automatically, but it doesn't change at all.
It seems that all i do after the initialize() method doesn't work.
How can i resolve that? And am i following the right way to do a gui for a Server? I had some doubts if to put a gui object inside the server (as i did) or to put a server inside the gui. I'm really confused.
Thanks in advance to everyone.
From reviewing your code shortly, it seems that you are not even calling the method
public void fullCombobox(List<ClientInterface> lista) throws RemoteException {}
You either forgot to show the call in your code or it was the mistake that made you think that it is a problem with the JComboBox.
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