apache.commons.logging classNotFound 即使在添加了对 Maven 的依赖之后答案

【问题标题】：apache.commons.logging classNotFound even after added dependency to Mavenapache.commons.logging classNotFound 即使在添加了对 Maven 的依赖之后
【发布时间】：2021-10-28 22:31:57
【问题描述】：

一般信息

我在 Windows 10 PC 上使用 VSCode。我的项目是一个使用 JDK 11 + javaFX 11 + Maven 的桌面应用程序。我对 Intelli J 也有同样的问题。这是存储库：https://github.com/Osolemio44/Appiculture.git 分公司：fix/modulenotfound

问题

出现此错误：java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory。有人可以帮我解决这个问题吗？

完整日志：

Exception in Application start method
java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)        
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
        at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)        
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)        
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
        at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
        at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
        at jasperreports@6.17.0/net.sf.jasperreports.engine.JasperFillManager.<clinit>(JasperFillManager.java:81)
        at Appiculture/com.base.controllers.OperationManager.printApiaryReport(OperationManager.java:186)
        at Appiculture/com.base.controllers.views.MainController.refreshWebview(MainController.java:827)
        at Appiculture/com.base.controllers.views.MainController$1.changed(MainController.java:176)
        at Appiculture/com.base.controllers.views.MainController$1.changed(MainController.java:1)
        at javafx.base/com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:181)
        at javafx.base/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
        at javafx.base/javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(ReadOnlyObjectPropertyBase.java:74)
        at javafx.base/javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:102)
        at javafx.base/javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:113)
        at javafx.base/javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:147)
        at javafx.controls/javafx.scene.control.SelectionModel.setSelectedItem(SelectionModel.java:105)
        at javafx.controls/javafx.scene.control.MultipleSelectionModelBase.lambda$new$0(MultipleSelectionModelBase.java:67)
        at javafx.base/com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:136)
        at javafx.base/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
        at javafx.base/javafx.beans.property.ReadOnlyIntegerPropertyBase.fireValueChangedEvent(ReadOnlyIntegerPropertyBase.java:72)
        at javafx.base/javafx.beans.property.ReadOnlyIntegerWrapper.fireValueChangedEvent(ReadOnlyIntegerWrapper.java:102)
        at javafx.base/javafx.beans.property.IntegerPropertyBase.markInvalid(IntegerPropertyBase.java:114)
        at javafx.base/javafx.beans.property.IntegerPropertyBase.set(IntegerPropertyBase.java:148)
        at javafx.controls/javafx.scene.control.SelectionModel.setSelectedIndex(SelectionModel.java:69)
        at javafx.controls/javafx.scene.control.MultipleSelectionModelBase.select(MultipleSelectionModelBase.java:412)
        at javafx.controls/javafx.scene.control.MultipleSelectionModelBase.select(MultipleSelectionModelBase.java:444)
        at Appiculture/com.base.controllers.views.MainController.initialApiaryConfig(MainController.java:145)
        at Appiculture/com.base.controllers.views.MainController.initialize(MainController.java:103)
        at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2573)
        at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2466)
        at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2435)
        at Appiculture/com.base.Launcher.start(Launcher.java:33)
        at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
        at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
        at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
        at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
        at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
        ... 1 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        ... 37 more
Exception running application com.base.Launcher

我尝试过的解决方案

我已经阅读了几篇堆栈溢出帖子，但没有一篇对我有用。这是我尝试过的：

清理并重建项目
在我的 POM 中添加以下依赖项：

        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>

将 compile 添加到 commns-logging 依赖项。
将 jasperreport 依赖项更新到新版本。

pom.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.base</groupId>
    <artifactId>Appiculture</artifactId>
    <version>0.0.1</version>

    <dependencies>
        <dependency>
            <groupId>org.xerial</groupId>
            <artifactId>sqlite-jdbc</artifactId>
            <version>3.34.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/net.sf.jasperreports/jasperreports -->
        <dependency>
            <groupId>net.sf.jasperreports</groupId>
            <artifactId>jasperreports</artifactId>
            <version>6.17.0</version>
        </dependency>

        <!--        javaFX-->
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-base</artifactId>
            <version>11.0.2</version>
        </dependency>

        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>11.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>11.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-web</artifactId>
            <version>11.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-swing</artifactId>
            <version>11.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-media</artifactId>
            <version>11.0.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>


    </dependencies>

    <build>
        <plugins>
            <!-- <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.6</version>
                <configuration>
                    <mainClass>com.base.Launcher</mainClass>
                    <executable>C:\libs\jdk-11\bin\jlink</executable>
                </configuration>
            </plugin> -->
        </plugins>
    </build>

    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>


</project>

【问题讨论】：

VsCode 不是我的朋友的 IDE。它是一个带有几个强大扩展的代码编辑器。尝试使用其他可以为您处理很多事情的 IDE，例如 Eclipse、NetBeans 或 IntelliJ IDEA。
当你安装完所有的插件后，VSCode 就像和IDE一样，这是一个非常好的解决方案。我也尝试过 IntelliJ 并遇到了同样的问题。无论如何，这不是重点。
如果apache.commons.logging 依赖项可用，您可以检查您的.m2 文件夹，如果不是，请尝试在您的VSCode 中进行maven 同步。可能有可用于该任务的插件。
是的，.m2 文件夹中存在依赖项

标签： java maven javafx

【解决方案1】：

问题是项目有冲突的传递依赖。此外，错误间歇性地出现。那是因为加载时间是可变的，有时它会加载正确的依赖项，有时则不会。解决方案是添加这个负责始终加载最新依赖项的 Maven 插件：

https://maven.apache.org/guides/introduction/introduction-to-optional-and-excludes-dependencies.html#dependency-exclusions

请记住始终执行 Maven 清理。

【讨论】：