java.lang.NoClassDefFoundError：使用 log4j 速度自定义布局
[英]java.lang.NoClassDefFoundError: with log4j velocity custom layout
问题描述
I am writing a custom layout for log4j appender with velocity, but I am unable to get it to run
我正在为具有速度的 log4j appender 编写自定义布局，但我无法让它运行
the error below:下面的错误：
java.lang.NoClassDefFoundError: org/apache/commons/collections/ExtendedProperties at org.apache.velocity.runtime.RuntimeInstance.(RuntimeInstance.java:183) at org.apache.velocity.app.VelocityEngine.(VelocityEngine.java:60) at nz.ac.massey.cs.sdc.assign1.s06013597.VelocityLayout.(VelocityLayout.java:16) at nz.ac.massey.cs.sdc.assign1.s06013597.VelocityLayoutTest.test(VelocityLayoutTest.java:36) 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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod
This is my pom.xml这是我的 pom.xml
<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>assign251_2</groupId>
<artifactId>s06013597</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>s06013597</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.velocity/velocity -->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.8.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.2</version>
<executions>
<execution>
<id>prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>site</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.2</version>
<reportSets>
<reportSet>
<reports>
<report>report</report>
</reports>
</reportSet>
</reportSets>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jdepend-maven-plugin</artifactId>
<version>2.0</version>
</plugin>
</plugins>
</reporting>
</project>
1 个解决方案
解决方案1
0 已采纳 2018-10-21 23:50:30
Your code runs ok and your test passes on my machine.你的代码运行正常，你的测试在我的机器上通过。 You should reimport your maven dependencies, and / or delete your apache/commons/collection directory from your .m2 folder.您应该重新导入您的 maven 依赖项，和/或从您的 .m2 文件夹中删除您的 apache/commons/collection 目录。
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