31.05.2018, 13:19. Показов 1411. Ответов 0
Доброго времени суток! Пытаюсь реализовать RMI, но не получается. Есть клиент, интерфейс на JavaFX, два поля для ввода чисел
и кнопка для отправки этих чисел на сервер, который должен вернуть их сумму. В клиенте реализован интерфейс. На сервере Интерфейс и Класс имплемент. Всё запускается но по нажатию кнопки в клиенте выплёвывается ошибка.
1.Интерфейс
| Java |
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| package MyClientPack;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface MyCalculatorInterface extends Remote {
int add(int a,int b) throws RemoteException;
} |
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2. Action Кнопки
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| public class Controller {
public Button myButton1;
public TextField myTextField1;
public TextField myTextField2;
public Label myLabel1;
public void pressMyButton1(ActionEvent e) throws RemoteException,NotBoundException {
Registry MyRegistry = LocateRegistry.getRegistry();
MyCalculatorInterface MyCalculator = (MyCalculatorInterface) MyRegistry.lookup(MyRegistry.list()[0]);
this.myLabel1.setText(Integer.toString(Integer.parseInt(this.myTextField1.getText()),Integer.parseInt(this.myTextField2.getText())));
}
} |
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3. Интерфейс на сервере
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| package MyServerPack;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface MyCalculatorInterface extends Remote {
int add(int a,int b) throws RemoteException;
} |
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4.Класс на сервере
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| package MyServerPack;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class MyClassCalculator extends UnicastRemoteObject implements MyCalculatorInterface {
public MyClassCalculator() throws RemoteException{
}
public int add(int a,int b){
return a+b;
}
} |
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5. Запуск сервера
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| package MyServerPack;
import javafx.event.ActionEvent;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import java.rmi.AlreadyBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
public class Controller{
public Button myButton1;
public Button myButton2;
public Label myLabel1;
public Label myLabel2;
private Registry MyRegistry;
public void pressMyButton1(ActionEvent e) throws RemoteException,AlreadyBoundException {
this.MyRegistry = LocateRegistry.createRegistry(Registry.REGISTRY_PORT);
MyRegistry.bind("MyCalculator",new MyClassCalculator());
this.myLabel1.setText("Сервер запущен!");
this.myLabel2.setText("Ожидание клиента!");
}
public void pressMyButton2(ActionEvent e) throws RemoteException {
MyClassCalculator.unexportObject(MyRegistry, true);
this.myLabel1.setText("Сервер остановлен!");
this.myLabel2.setText("");
}
} |
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6. Собственно ошибка
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| Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8413)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
... 48 more
Caused by: java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: MyServerPack.MyCalculatorInterface (no security manager: RMI class loader disabled)
at sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:127)
at MyClientPack.Controller.pressMyButton1(Controller.java:26)
... 58 more
Caused by: java.lang.ClassNotFoundException: MyServerPack.MyCalculatorInterface (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:556)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:265)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1746)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2040)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1571)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
at sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:123)
... 59 more
Process finished with exit code 0 |
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Проблема решена! Необходимо было чтобы упаковки клиента и сервера имели одинаковое название!
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