Swing GUI客户端侦听器不响应远程RMI属性的更新
当对JTree的模型进行显式调用时,我在让JTree重新绘制时遇到了一些问题(我在向其添加了一些新节点后进行了调用) 该代码最初运行良好,但由于应用程序已导出到RMI,因此失败 我将DefaultTreeModel对象存储在控制器类中,它是一个远程对象 我使用tree.addModel(controller.getModel())将DefaultTreeModel对象添加到客户端的JTree中 我使用订阅客户端GUI上按钮的ActionListener调用控制器中执行“添加新节点”操作的方法 我使用TreeModelListener将消息打印到屏幕上,以证明模型侦听器已启动 客户端Swing侦听器不能在RMI上工作吗 我设法重现了这个问题。我包括完整的代码,但希望有人能够根据经验给出答案 服务器驱动程序类:Swing GUI客户端侦听器不响应远程RMI属性的更新,swing,callback,listener,rmi,jtree,Swing,Callback,Listener,Rmi,Jtree,当对JTree的模型进行显式调用时,我在让JTree重新绘制时遇到了一些问题(我在向其添加了一些新节点后进行了调用) 该代码最初运行良好,但由于应用程序已导出到RMI,因此失败 我将DefaultTreeModel对象存储在控制器类中,它是一个远程对象 我使用tree.addModel(controller.getModel())将DefaultTreeModel对象添加到客户端的JTree中 我使用订阅客户端GUI上按钮的ActionListener调用控制器中执行“添加新节点”操作的方法 我
package server;
import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import client.controller.TestTreeControllerService;
import server.controller.TestTreeControllerImpl;
public class TestTreeServerStart {
/**
* @param args
*/
public static void main(String[] args) {
new TestTreeServerStart();
}
public TestTreeServerStart() {
try {
LocateRegistry.createRegistry(1099);
TestTreeControllerService c = new TestTreeControllerImpl();
Registry registry = LocateRegistry.getRegistry();
registry.rebind("TestTreeControllerService", c);
System.out.println("Started the RMI Server");
}
catch (RemoteException e) {
System.out.println(e.getMessage());
}
}
}
package server.controller;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import client.controller.TestTreeControllerService;
@SuppressWarnings("serial")
public class TestTreeControllerImpl extends UnicastRemoteObject implements TestTreeControllerService {
/**
*
*/
//private static final long serialVersionUID = -8137864611400855504L;
private DefaultTreeModel m ;
public DefaultTreeModel getModel() {
return m;
}
public TestTreeControllerImpl() throws RemoteException {
super();
m = new DefaultTreeModel(new DefaultMutableTreeNode("Root"));
}
public void addNodeAction() throws RemoteException {
DefaultTreeModel m = (DefaultTreeModel) getModel();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode("New Node");
DefaultMutableTreeNode root = (DefaultMutableTreeNode) m.getRoot();
root.add(newNode);
//m.insertNodeInto(newNode, (DefaultMutableTreeNode) m.getRoot(), m.getChildCount(m.getRoot()));
m.nodeStructureChanged(root);
}
}
package client;
import java.rmi.Naming;
import java.rmi.RemoteException;
import client.controller.TestTreeControllerService;
import client.view.TreeTestClient;
public class TreeTestClientStart {
/**
* @param args
*/
public static void main(String[] args) {
try {
TestTreeControllerService c = (TestTreeControllerService) Naming.lookup("rmi://localhost:1099/TestTreeControllerService");
new TreeTestClient(c);
}
catch(RemoteException e) {
System.out.println("Remote service not found: " + e.getLocalizedMessage());
}
catch (Exception e) {
System.out.println("Splat");
}
}
}
package client.controller;
import javax.swing.tree.DefaultTreeModel;
public interface TestTreeControllerService extends java.rmi.Remote {
public DefaultTreeModel getModel() throws java.rmi.RemoteException;
public void addNodeAction() throws java.rmi.RemoteException;
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.Timer;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.GUIRefreshAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a listener that doesn't use the Remote object
t.addTreeSelectionListener(new RefreshTreeAction(this));
//Try a property change listener on the TreeModel
t.addPropertyChangeListener("treeModel", new RefreshTreeAction(this));
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
//Add a GUI redraw timer
Timer timer = new Timer(1000, new GUIRefreshAction(this));
timer.setInitialDelay(1);
timer.start();
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
服务器控制器实现类:
package server;
import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import client.controller.TestTreeControllerService;
import server.controller.TestTreeControllerImpl;
public class TestTreeServerStart {
/**
* @param args
*/
public static void main(String[] args) {
new TestTreeServerStart();
}
public TestTreeServerStart() {
try {
LocateRegistry.createRegistry(1099);
TestTreeControllerService c = new TestTreeControllerImpl();
Registry registry = LocateRegistry.getRegistry();
registry.rebind("TestTreeControllerService", c);
System.out.println("Started the RMI Server");
}
catch (RemoteException e) {
System.out.println(e.getMessage());
}
}
}
package server.controller;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import client.controller.TestTreeControllerService;
@SuppressWarnings("serial")
public class TestTreeControllerImpl extends UnicastRemoteObject implements TestTreeControllerService {
/**
*
*/
//private static final long serialVersionUID = -8137864611400855504L;
private DefaultTreeModel m ;
public DefaultTreeModel getModel() {
return m;
}
public TestTreeControllerImpl() throws RemoteException {
super();
m = new DefaultTreeModel(new DefaultMutableTreeNode("Root"));
}
public void addNodeAction() throws RemoteException {
DefaultTreeModel m = (DefaultTreeModel) getModel();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode("New Node");
DefaultMutableTreeNode root = (DefaultMutableTreeNode) m.getRoot();
root.add(newNode);
//m.insertNodeInto(newNode, (DefaultMutableTreeNode) m.getRoot(), m.getChildCount(m.getRoot()));
m.nodeStructureChanged(root);
}
}
package client;
import java.rmi.Naming;
import java.rmi.RemoteException;
import client.controller.TestTreeControllerService;
import client.view.TreeTestClient;
public class TreeTestClientStart {
/**
* @param args
*/
public static void main(String[] args) {
try {
TestTreeControllerService c = (TestTreeControllerService) Naming.lookup("rmi://localhost:1099/TestTreeControllerService");
new TreeTestClient(c);
}
catch(RemoteException e) {
System.out.println("Remote service not found: " + e.getLocalizedMessage());
}
catch (Exception e) {
System.out.println("Splat");
}
}
}
package client.controller;
import javax.swing.tree.DefaultTreeModel;
public interface TestTreeControllerService extends java.rmi.Remote {
public DefaultTreeModel getModel() throws java.rmi.RemoteException;
public void addNodeAction() throws java.rmi.RemoteException;
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.Timer;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.GUIRefreshAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a listener that doesn't use the Remote object
t.addTreeSelectionListener(new RefreshTreeAction(this));
//Try a property change listener on the TreeModel
t.addPropertyChangeListener("treeModel", new RefreshTreeAction(this));
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
//Add a GUI redraw timer
Timer timer = new Timer(1000, new GUIRefreshAction(this));
timer.setInitialDelay(1);
timer.start();
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
客户端驱动程序类:
package server;
import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import client.controller.TestTreeControllerService;
import server.controller.TestTreeControllerImpl;
public class TestTreeServerStart {
/**
* @param args
*/
public static void main(String[] args) {
new TestTreeServerStart();
}
public TestTreeServerStart() {
try {
LocateRegistry.createRegistry(1099);
TestTreeControllerService c = new TestTreeControllerImpl();
Registry registry = LocateRegistry.getRegistry();
registry.rebind("TestTreeControllerService", c);
System.out.println("Started the RMI Server");
}
catch (RemoteException e) {
System.out.println(e.getMessage());
}
}
}
package server.controller;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import client.controller.TestTreeControllerService;
@SuppressWarnings("serial")
public class TestTreeControllerImpl extends UnicastRemoteObject implements TestTreeControllerService {
/**
*
*/
//private static final long serialVersionUID = -8137864611400855504L;
private DefaultTreeModel m ;
public DefaultTreeModel getModel() {
return m;
}
public TestTreeControllerImpl() throws RemoteException {
super();
m = new DefaultTreeModel(new DefaultMutableTreeNode("Root"));
}
public void addNodeAction() throws RemoteException {
DefaultTreeModel m = (DefaultTreeModel) getModel();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode("New Node");
DefaultMutableTreeNode root = (DefaultMutableTreeNode) m.getRoot();
root.add(newNode);
//m.insertNodeInto(newNode, (DefaultMutableTreeNode) m.getRoot(), m.getChildCount(m.getRoot()));
m.nodeStructureChanged(root);
}
}
package client;
import java.rmi.Naming;
import java.rmi.RemoteException;
import client.controller.TestTreeControllerService;
import client.view.TreeTestClient;
public class TreeTestClientStart {
/**
* @param args
*/
public static void main(String[] args) {
try {
TestTreeControllerService c = (TestTreeControllerService) Naming.lookup("rmi://localhost:1099/TestTreeControllerService");
new TreeTestClient(c);
}
catch(RemoteException e) {
System.out.println("Remote service not found: " + e.getLocalizedMessage());
}
catch (Exception e) {
System.out.println("Splat");
}
}
}
package client.controller;
import javax.swing.tree.DefaultTreeModel;
public interface TestTreeControllerService extends java.rmi.Remote {
public DefaultTreeModel getModel() throws java.rmi.RemoteException;
public void addNodeAction() throws java.rmi.RemoteException;
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.Timer;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.GUIRefreshAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a listener that doesn't use the Remote object
t.addTreeSelectionListener(new RefreshTreeAction(this));
//Try a property change listener on the TreeModel
t.addPropertyChangeListener("treeModel", new RefreshTreeAction(this));
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
//Add a GUI redraw timer
Timer timer = new Timer(1000, new GUIRefreshAction(this));
timer.setInitialDelay(1);
timer.start();
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
客户端控制器界面:
package server;
import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import client.controller.TestTreeControllerService;
import server.controller.TestTreeControllerImpl;
public class TestTreeServerStart {
/**
* @param args
*/
public static void main(String[] args) {
new TestTreeServerStart();
}
public TestTreeServerStart() {
try {
LocateRegistry.createRegistry(1099);
TestTreeControllerService c = new TestTreeControllerImpl();
Registry registry = LocateRegistry.getRegistry();
registry.rebind("TestTreeControllerService", c);
System.out.println("Started the RMI Server");
}
catch (RemoteException e) {
System.out.println(e.getMessage());
}
}
}
package server.controller;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import client.controller.TestTreeControllerService;
@SuppressWarnings("serial")
public class TestTreeControllerImpl extends UnicastRemoteObject implements TestTreeControllerService {
/**
*
*/
//private static final long serialVersionUID = -8137864611400855504L;
private DefaultTreeModel m ;
public DefaultTreeModel getModel() {
return m;
}
public TestTreeControllerImpl() throws RemoteException {
super();
m = new DefaultTreeModel(new DefaultMutableTreeNode("Root"));
}
public void addNodeAction() throws RemoteException {
DefaultTreeModel m = (DefaultTreeModel) getModel();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode("New Node");
DefaultMutableTreeNode root = (DefaultMutableTreeNode) m.getRoot();
root.add(newNode);
//m.insertNodeInto(newNode, (DefaultMutableTreeNode) m.getRoot(), m.getChildCount(m.getRoot()));
m.nodeStructureChanged(root);
}
}
package client;
import java.rmi.Naming;
import java.rmi.RemoteException;
import client.controller.TestTreeControllerService;
import client.view.TreeTestClient;
public class TreeTestClientStart {
/**
* @param args
*/
public static void main(String[] args) {
try {
TestTreeControllerService c = (TestTreeControllerService) Naming.lookup("rmi://localhost:1099/TestTreeControllerService");
new TreeTestClient(c);
}
catch(RemoteException e) {
System.out.println("Remote service not found: " + e.getLocalizedMessage());
}
catch (Exception e) {
System.out.println("Splat");
}
}
}
package client.controller;
import javax.swing.tree.DefaultTreeModel;
public interface TestTreeControllerService extends java.rmi.Remote {
public DefaultTreeModel getModel() throws java.rmi.RemoteException;
public void addNodeAction() throws java.rmi.RemoteException;
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.Timer;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.GUIRefreshAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a listener that doesn't use the Remote object
t.addTreeSelectionListener(new RefreshTreeAction(this));
//Try a property change listener on the TreeModel
t.addPropertyChangeListener("treeModel", new RefreshTreeAction(this));
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
//Add a GUI redraw timer
Timer timer = new Timer(1000, new GUIRefreshAction(this));
timer.setInitialDelay(1);
timer.start();
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
客户端用户界面:
package server;
import java.io.IOException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import client.controller.TestTreeControllerService;
import server.controller.TestTreeControllerImpl;
public class TestTreeServerStart {
/**
* @param args
*/
public static void main(String[] args) {
new TestTreeServerStart();
}
public TestTreeServerStart() {
try {
LocateRegistry.createRegistry(1099);
TestTreeControllerService c = new TestTreeControllerImpl();
Registry registry = LocateRegistry.getRegistry();
registry.rebind("TestTreeControllerService", c);
System.out.println("Started the RMI Server");
}
catch (RemoteException e) {
System.out.println(e.getMessage());
}
}
}
package server.controller;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import client.controller.TestTreeControllerService;
@SuppressWarnings("serial")
public class TestTreeControllerImpl extends UnicastRemoteObject implements TestTreeControllerService {
/**
*
*/
//private static final long serialVersionUID = -8137864611400855504L;
private DefaultTreeModel m ;
public DefaultTreeModel getModel() {
return m;
}
public TestTreeControllerImpl() throws RemoteException {
super();
m = new DefaultTreeModel(new DefaultMutableTreeNode("Root"));
}
public void addNodeAction() throws RemoteException {
DefaultTreeModel m = (DefaultTreeModel) getModel();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode("New Node");
DefaultMutableTreeNode root = (DefaultMutableTreeNode) m.getRoot();
root.add(newNode);
//m.insertNodeInto(newNode, (DefaultMutableTreeNode) m.getRoot(), m.getChildCount(m.getRoot()));
m.nodeStructureChanged(root);
}
}
package client;
import java.rmi.Naming;
import java.rmi.RemoteException;
import client.controller.TestTreeControllerService;
import client.view.TreeTestClient;
public class TreeTestClientStart {
/**
* @param args
*/
public static void main(String[] args) {
try {
TestTreeControllerService c = (TestTreeControllerService) Naming.lookup("rmi://localhost:1099/TestTreeControllerService");
new TreeTestClient(c);
}
catch(RemoteException e) {
System.out.println("Remote service not found: " + e.getLocalizedMessage());
}
catch (Exception e) {
System.out.println("Splat");
}
}
}
package client.controller;
import javax.swing.tree.DefaultTreeModel;
public interface TestTreeControllerService extends java.rmi.Remote {
public DefaultTreeModel getModel() throws java.rmi.RemoteException;
public void addNodeAction() throws java.rmi.RemoteException;
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
package client.view;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.Timer;
import client.controller.TestTreeControllerService;
import client.view.action.AddNodeAction;
import client.view.action.GUIRefreshAction;
import client.view.action.RefreshTreeAction;
public class TreeTestClient {
private JTree t;
private TestTreeControllerService c;
public JTree getTree() {
return t;
}
public TestTreeControllerService getController() {
return c;
}
public void setTree(JTree tIn) {
t = tIn;
}
public TreeTestClient(TestTreeControllerService cIn) {
//Add controller
try {
c = cIn;
//Draw Frame & Panel - set dimensions
JFrame f = new JFrame();
f.setSize(new Dimension(800,600));
JPanel p = new JPanel();
p.setSize(new Dimension(800,600));
//Create a tree and add the Model from the Controller to it
t = new JTree();
t.setModel(c.getModel());
//Try a listener that doesn't use the Remote object
t.addTreeSelectionListener(new RefreshTreeAction(this));
//Try a property change listener on the TreeModel
t.addPropertyChangeListener("treeModel", new RefreshTreeAction(this));
//Try a Tree Model Listener
t.getModel().addTreeModelListener(new RefreshTreeAction(this));
//Add listener to a button which adds nodes to the tree when clicked
JButton addNode = new JButton("Add node");
addNode.addActionListener(new AddNodeAction(this));
JScrollPane s = new JScrollPane(t);
//Add a GUI redraw timer
Timer timer = new Timer(1000, new GUIRefreshAction(this));
timer.setInitialDelay(1);
timer.start();
p.add(s);
p.add(addNode);
p.setVisible(true);
f.add(p);
f.setVisible(true);
}
catch(Exception e) {
System.out.println("Splat");
}
}
}
*客户端“添加节点”操作侦听器(在控制器中调用添加操作)*
客户端“刷新操作”树侦听器(打印到屏幕以证明侦听器已启动)
服务器导出的TreeModel作为客户端自己的副本序列化到客户端。服务器不知道客户端副本发生了什么,客户端也不知道服务器副本发生了什么。它们不是同一个对象。通过向订阅GUI上新按钮的ActionListener添加以下代码,我可以在单击按钮时检查模型的内容:
//Loop contents of model attached to Client Tree
for (int i=0; i<t.getModel().getChildCount(t.getModel().getRoot()); i++) {
System.out.println("From Tree: Row #" + i + ": " + t.getModel().getChild(t.getModel().getRoot(), i));
}
//Loop contents of model object stored in Controller
try {
for (int i=0; i<c.getModel().getChildCount(c.getModel().getRoot()); i++) {
System.out.println("From Controller: Row #" + i + ": " + c.getModel().getChild(c.getModel().getRoot(), i));
}
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
GUI刷新侦听器类
package client.view.action;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.rmi.RemoteException;
import client.view.TreeTestClient;
public class GUIRefreshAction implements ActionListener {
private TreeTestClient client;
public GUIRefreshAction(TreeTestClient clientIn) {
client = clientIn;
}
@Override
public void actionPerformed(ActionEvent e) {
//Update the Tree's Model to match latest on Server
try {
client.getTree().setModel(client.getController().getModel());
} catch (RemoteException e1) {
e1.printStackTrace();
}
}
}
我希望这有助于对RMI客户端Swing GUI有相同要求的人根据服务器上的更改进行更新。根据RMI跟踪:“远程对象基本上是通过引用传递的。远程对象引用是存根,它是实现远程对象实现的完整远程接口集的客户端代理“。如果远程对象通过引用传递给存根,那么当它们的状态发生变化时,任何与存根交互的客户端类都可以观察到它。@7SpecialGems树模型不是远程对象;它不是通过引用传递的;正如我在上面写的那样,它被序列化,即通过值传递。它们不是同一个对象。