当我尝试从 JfxpasswordField 获取密码值时，出现以下异常。在进行研究之后，我遇到了一个建议我使用场景 bulder 8.5 的解决方案，但不幸的是，这并没有解决我的问题。请协助解决此问题
下面是产生错误的代码标题。错误发生在这一行
PasswordValue = password.getText();
这是代码片段
package com.kayseensystems.posmaxpro;
import com.jfoenix.controls.JFXTextField;
import com.kayseensystems.posmaxpro.Datalayer.User;
import com.kayseensystems.posmaxpro.Services.LonginService;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.geometry.Pos;
import javafx.util.Duration;
import org.controlsfx.control.Notifications;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import com.jfoenix.controls.JFXPasswordField;
@Controller
public class FXMLController implements Initializable {
@Autowired
private LonginService longinService;
@FXML
private JFXPasswordField password;
@FXML
private JFXTextField username;
@FXML
private void loginButton(ActionEvent event) throws Exception {
String usernamevalue=username.getText();
String PasswordValue;
PasswordValue = password.getText();
System.out.println("Username="+usernamevalue+" "+PasswordValue);
try {
User user=longinService.SystemLogin(usernamevalue,PasswordValue);
if(user==null){
Notifications notify=Notifications.create()
.title("Login").text("The provided user does Not Exist.Kindly consult Management")
.graphic(null).hideAfter(Duration.seconds(5))
.position(Pos.TOP_LEFT);
notify.showError();
}else{
Notifications notify=Notifications.create()
.title("Login").text("Logged in Successful")
.graphic(null).hideAfter(Duration.seconds(5))
.position(Pos.TOP_LEFT);
notify.showInformation();
}
} catch (Exception e) {
e.getCause().printStackTrace();
}
}
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
错误堆栈跟踪
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$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
... 48 more
Caused by: java.lang.NullPointerException
at com.kayseensystems.posmaxpro.FXMLController.loginButton(FXMLController.java:50)
... 58 more
2018-07-18 01:40:51.735 WARN 6444 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Thread starvation or clock leap detected (housekeeper delta=3m21s762ms818µs939ns).
2018-07-18 02:06:33.846 INFO 6444 --- [lication Thread] o.s.c.support.DefaultLifecycleProcessor : Stopping beans in phase 2147483647
2018-07-18 02:06:33.851 INFO 6444 --- [lication Thread] org.quartz.core.QuartzScheduler : Scheduler quartzScheduler_$_NON_CLUSTERED paused.
2018-07-18 07:48:57.461 WARN 6444 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Thread starvation or clock leap detected (housekeeper delta=5h12m35s558ms294µs497ns).
这是fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXPasswordField?>
<?import com.jfoenix.controls.JFXTextField?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Hyperlink?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.effect.Lighting?>
<?import javafx.scene.effect.Shadow?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.Pane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>
<AnchorPane id="AnchorPane" fx:id="FXMLController" prefHeight="594.0" prefWidth="779.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.kayseensystems.posmaxpro.FXMLController">
<children>
<VBox alignment="CENTER" layoutX="-11.0" layoutY="-6.0" prefHeight="594.0" prefWidth="349.0" style="-fx-background-color: #6a5acd;" AnchorPane.bottomAnchor="6.0" AnchorPane.topAnchor="-6.0">
<children>
<ImageView fx:id="image1" cache="true" fitHeight="73.0" fitWidth="155.0" focusTraversable="true" pickOnBounds="true" VBox.vgrow="ALWAYS">
<image>
<Image url="@../../../icons/Capture.JPG" />
</image>
<VBox.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</VBox.margin>
</ImageView>
<Label prefHeight="18.0" prefWidth="94.0" text="Welcome To" textAlignment="RIGHT" textFill="WHITE" VBox.vgrow="ALWAYS">
<font>
<Font name="Eras Bold ITC" size="14.0" />
</font>
<effect>
<Lighting>
<bumpInput>
<Shadow />
</bumpInput>
</Lighting>
</effect>
</Label>
<Label text="Pos Max Pro" textFill="WHITE" VBox.vgrow="ALWAYS">
<font>
<Font name="Impact" size="24.0" />
</font>
</Label>
</children>
</VBox>
<Pane layoutX="393.0" prefHeight="594.0" prefWidth="434.0" style="-fx-background-color: #FFFF;" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="345.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<ImageView fx:id="image2" fitHeight="150.0" fitWidth="201.0" layoutX="7.0" layoutY="6.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@../../../icons/innerview.JPG" />
</image>
</ImageView>
<Label layoutX="32.0" layoutY="144.0" prefHeight="18.0" prefWidth="138.0" text="Welcome Back">
<font>
<Font name="Ebrima Bold" size="18.0" />
</font>
</Label>
<Label layoutX="36.0" layoutY="167.0" prefHeight="18.0" prefWidth="124.0" text="sign in to continue" />
<Hyperlink fx:id="signup" layoutX="171.0" layoutY="424.0" prefHeight="29.0" prefWidth="110.0" text="Sign up here" textFill="SLATEBLUE">
<font>
<Font name="Ebrima Bold" size="16.0" />
</font>
</Hyperlink>
<Hyperlink fx:id="passwordchange" layoutX="31.0" layoutY="424.0" prefHeight="26.0" prefWidth="117.0" text="forgot password" textFill="ROYALBLUE">
<font>
<Font name="System Bold" size="12.0" />
</font>
</Hyperlink>
<Button fx:id="Login" layoutX="35.0" layoutY="493.0" mnemonicParsing="false" onAction="#loginButton" prefHeight="35.0" prefWidth="110.0" style="-fx-background-color: #00CED1; -fx-background-radius: 10; -fx-border-radius: 10;" text="Button" textFill="WHITE">
<font>
<Font name="Ebrima Bold" size="22.0" />
</font>
</Button>
<JFXTextField fx:id="username" focusColor="#6747cd" labelFloat="true" layoutX="34.0" layoutY="276.0" prefHeight="35.0" prefWidth="241.0" promptText="username" unFocusColor="#6747cd" />
<JFXPasswordField id=" password" fx:id="password" labelFloat="true" layoutX="31.0" layoutY="364.0" prefHeight="35.0" prefWidth="241.0" promptText="Password" />
</children>
</Pane>
</children>
</AnchorPane>
