【发布时间】：2019-06-07 19:48:36
【问题描述】：
我做了一个项目，想用它创建一个罐子。构建工件后，我得到以下异常：
java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/Module java.lang.ClassNotFoundException: com.fasterxml.jackson.databind.Module
这是我在 pom.xml 中的依赖项：
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.datatype/jackson-datatype-jsr310 -->
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.itextpdf/kernel -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>kernel</artifactId>
<version>7.1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.itextpdf/forms -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>forms</artifactId>
<version>7.1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.itextpdf/pdftest -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>pdftest</artifactId>
<version>7.1.4</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/com.itextpdf/pdfa -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>pdfa</artifactId>
<version>7.1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/com.jfoenix/jfoenix -->
<dependency>
<groupId>com.jfoenix</groupId>
<artifactId>jfoenix</artifactId>
<version>9.0.8</version>
</dependency>
</dependencies>
这是我迄今为止尝试过的：
1.我使用enforcer插件在我的依赖中查找版本冲突
2.我展示了maven依赖树图，解决了intellij中红线显示的冲突或不满足的依赖关系。图表现在看起来像这样：
依赖树图：
我在 pom.xml 中做错了什么或解决了异常问题吗？
编辑：mvn 依赖的输出：树
--- maven-dependency-plugin:2.8:tree (default-cli) @ medium-software ---
[INFO] mediumSoftware:medium-software:jar:1.0-SNAPSHOT
[INFO] +- com.fasterxml.jackson.core:jackson-core:jar:2.9.8:compile
[INFO] +- com.fasterxml.jackson.core:jackson-databind:jar:2.9.8:compile
[INFO] | \- com.fasterxml.jackson.core:jackson-
annotations:jar:2.9.0:compile
[INFO] +- com.fasterxml.jackson.datatype:jackson-datatype-
jsr310:jar:2.9.8:compile
[INFO] +- com.itextpdf:kernel:jar:7.1.4:compile
[INFO] | +- com.itextpdf:io:jar:7.1.4:compile
[INFO] | \- org.slf4j:slf4j-api:jar:1.7.13:compile
[INFO] +- com.itextpdf:forms:jar:7.1.4:compile
[INFO] | \- com.itextpdf:layout:jar:7.1.4:compile
[INFO] +- com.itextpdf:pdftest:jar:7.1.4:test
[INFO] | +- ch.qos.logback:logback-classic:jar:1.1.3:test
[INFO] | | \- ch.qos.logback:logback-core:jar:1.1.3:test
[INFO] | \- junit:junit:jar:4.12:test
[INFO] | \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- com.itextpdf:pdfa:jar:7.1.4:compile
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.25:test
[INFO] | \- log4j:log4j:jar:1.2.17:test
[INFO] \- com.jfoenix:jfoenix:jar:9.0.8:compile
[INFO] -------------------------------------------------------------------
-----
[INFO] BUILD SUCCESS
[INFO] -------------------------------------------------------------------
-----
[INFO] Total time: 1.912 s
[INFO] Finished at: 2019-01-13T17:59:48+01:00
[INFO] Final Memory: 11M/47M
[INFO] -------------------------------------------------------------------
-----
Process finished with exit code 0
编辑：完全例外：
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:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:473)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:372)
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:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:941)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:973)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:198)
at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/Module
at controller.Helper.Meldungsgenerator.<init>(Meldungsgenerator.java:17)
at view.Main.start(Main.java:23)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:919)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$11(PlatformImpl.java:449)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(PlatformImpl.java:418)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:417)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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$3(WinApplication.java:175)
... 1 more
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.databind.Module
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
... 11 more
Exception running application view.Main
【问题讨论】：
-
你能发布
mvn dependency:tree命令的输出吗？您很可能混淆了不同的 Jackson 版本。 -
@KarolDowbecki 我用输出更新了问题
-
能否也添加完整的异常堆栈跟踪？
-
@KarolDowbecki 完成
标签： java maven jar dependencies