java - 如何修复 Time4J 库中的 NoSuchMethodError？

Question

我在这行代码中遇到了 NoSuchMethodError 问题:

    private CalendarPicker<PersianCalendar> calendarPicker = CalendarPicker.persianWithSystemDefaults();

当我在intellij idea中运行项目时它工作正常但是输出的jar文件不会运行。我在 eclipse 中导出项目并在 eclipse 中出现此错误。

我使用了这个库:

1 - time4j-core-4.38

2 - time4j-ui-5.5

3 - time4j-calendar-4.38.jar

4 - time4j-base-5.5.jar

错误全文:

Exception in Application start method
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
    at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$159(LauncherImpl.java:182)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.util.ServiceConfigurationError: net.time4j.scale.LeapSecondProvider: Provider net.time4j.scale.spi.DefaultLeapSecondProviderSPI could not be instantiated
    at java.util.ServiceLoader.fail(Unknown Source)
    at java.util.ServiceLoader.access$100(Unknown Source)
    at java.util.ServiceLoader$LazyIterator.nextService(Unknown Source)
    at java.util.ServiceLoader$LazyIterator.next(Unknown Source)
    at java.util.ServiceLoader$1.next(Unknown Source)
    at net.time4j.base.ResourceLoader$StdResourceLoader.services(ResourceLoader.java:463)
    at net.time4j.scale.LeapSeconds.<init>(LeapSeconds.java:201)
    at net.time4j.scale.LeapSeconds.<clinit>(LeapSeconds.java:179)
    at net.time4j.SystemClock.calibrate(SystemClock.java:474)
    at net.time4j.SystemClock.<clinit>(SystemClock.java:95)
    at net.time4j.ui.javafx.CalendarPicker.lambda$persianWithSystemDefaults$15(CalendarPicker.java:761)
    at net.time4j.ui.javafx.CalendarControl.<init>(CalendarControl.java:82)
    at net.time4j.ui.javafx.CalendarPicker.<init>(CalendarPicker.java:178)
    at net.time4j.ui.javafx.CalendarPicker.create(CalendarPicker.java:1110)
    at net.time4j.ui.javafx.CalendarPicker.persian(CalendarPicker.java:785)
    at net.time4j.ui.javafx.CalendarPicker.persianWithSystemDefaults(CalendarPicker.java:759)
    at HomeScreenController.<init>(HomeScreenController.java:71)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at sun.reflect.misc.ReflectUtil.newInstance(Unknown Source)
    at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:927)
    at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
    at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
    at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
    at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
    at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
    at Main.start(Main.java:39)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$166(LauncherImpl.java:863)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$179(PlatformImpl.java:326)
    at com.sun.javafx.application.PlatformImpl.lambda$null$177(PlatformImpl.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$178(PlatformImpl.java:294)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
    ... 1 more
Caused by: java.lang.NoSuchMethodError: net.time4j.PlainDate.localFormatter(Ljava/lang/String;Lnet/time4j/format/ChronoPattern;)Lnet/time4j/format/TemporalFormatter;
    at net.time4j.scale.spi.DefaultLeapSecondProviderSPI.<init>(DefaultLeapSecondProviderSPI.java:77)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    ... 44 more
Exception running application Main

Answer 1

NoSuchMethodError 通常意味着您的编译时环境和运行时环境之间存在依赖性差异。

实际上，您可能有:1. classpath 中的多个不同版本的 net.time4j JAR2. 运行时类路径中与编译时使用的不同的 net.time4j JAR。

由于调用层次结构似乎表明 net.time4j 本身正在调用一个它不知道的方法，我怀疑类路径上有多个 JAR 版本。

这似乎与您正在谈论使用的 JAR 一致。您正在混合版本 4.38 和版本 5.5。您应该坚持使用套件中所有库的一个版本，因为它们很可能被设计为可以协同工作。

你可能有点困惑，因为 Time4J 似乎改变了 4.x 和 5.x 版本之间的包装，time4j-core 现在可能被命名为 time4j-base

有一个tutorial page on the Time4J website这似乎表明您可以简单地删除对 time4-core 和 time4j-calendar 的现有依赖项。