ClassNotFound 异常：Eclipse 中的 Maven 不工作

【问题标题】：ClassNotFound Exception : Maven in Eclipse is not workingClassNotFound 异常：Eclipse 中的 Maven 不工作
【发布时间】：2017-09-22 01:57:05
【问题描述】：

我有以下 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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>my.org</groupId>
    <artifactId>project</artifactId>
    <packaging>${packaging.type}</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>My Project Name</name>
    <profiles>
        <profile>
            <id>dev</id>
            <properties>
                <packaging.type>war</packaging.type>
                <outputFileNameMapping>@{artifactId}@.@{extension}@</outputFileNameMapping>
            </properties>
        </profile>
        <profile>
            <id>uat</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <packaging.type>jar</packaging.type>
                <outputFileNameMapping>@{artifactId}@.@{extension}@.@{version}@</outputFileNameMapping>
            </properties>
        </profile>
    </profiles>
    <build>
        <finalName>My Project Name</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <outputFileNameMapping>${outputFileNameMapping}</outputFileNameMapping>
                    <archive>
                        <manifestFile>src/main/webapp/META-INF/MANIFEST.MF</manifestFile>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

我收到类似java.lang.ClassNotFoundException的错误

我猜我在 Eclipse 中的项目根本没有加载任何 Maven 依赖项。

如果我从命令行运行相同的项目，那么它的工作原理。

但如果我删除以下行，那么它在 Eclipse 中可以完美运行。

<outputFileNameMapping>${outputFileNameMapping}</outputFileNameMapping>

有人可以帮忙吗？

我的 Eclipse 版本

面向 Web 开发人员的 Eclipse Java EE IDE。 版本：Luna Service Release 2 (4.4.2) 内部版本号：20150219-0600

编辑：添加堆栈跟踪

Apr 25, 2017 12:38:35 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:edte' did not find a matching property.
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version:        Apache Tomcat/7.0.64
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server built:          Aug 19 2015 17:18:06 UTC
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server number:         7.0.64.0
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Name:               Linux
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Version:            4.8.10-040810-generic
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Architecture:          amd64
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Java Home:             /usr/lib/jvm/java-8-openjdk-amd64/jre
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Version:           1.8.0_121-8u121-b13-0ubuntu1.16.04.2-b13
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Vendor:            Oracle Corporation
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_BASE:         /var/tmp/projects/edte/.metadata/.plugins/org.eclipse.wst.server.core/tmp0
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_HOME:         /home/bhushanp/workspace/apache-tomcat-7.0.64
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:35365
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.base=/var/tmp/projects/edte/.metadata/.plugins/org.eclipse.wst.server.core/tmp0
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.home=/home/bhushanp/workspace/apache-tomcat-7.0.64
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dwtp.deploy=/var/tmp/projects/edte/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.endorsed.dirs=/home/bhushanp/workspace/apache-tomcat-7.0.64/endorsed
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dfile.encoding=UTF-8
Apr 25, 2017 12:38:35 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib
Apr 25, 2017 12:38:35 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8330"]
Apr 25, 2017 12:38:35 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8339"]
Apr 25, 2017 12:38:35 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 968 ms
Apr 25, 2017 12:38:35 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Apr 25, 2017 12:38:35 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.64
Apr 25, 2017 12:38:36 PM org.apache.catalina.startup.TldConfig execute
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Apr 25, 2017 12:38:37 PM org.apache.catalina.startup.TldConfig execute
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Apr 25, 2017 12:38:37 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class org.zkoss.zk.ui.http.HttpSessionListener
java.lang.ClassNotFoundException: org.zkoss.zk.ui.http.HttpSessionListener
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:506)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:488)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:115)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4919)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5517)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1574)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1564)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Apr 25, 2017 12:38:37 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Apr 25, 2017 12:38:37 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file
Apr 25, 2017 12:38:37 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/edte] startup failed due to previous errors
Apr 25, 2017 12:38:37 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8330"]
Apr 25, 2017 12:38:37 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8339"]
Apr 25, 2017 12:38:37 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1814 ms

另外，我已经为类 'org.zkoss.zk.ui.http.HttpSessionListener' 添加了依赖项，但它仍然给我这个错误。

我的pom.xml

【问题讨论】：

  • 请添加完整的堆栈跟踪。你还没有添加任何依赖！
  • 你是否在 pom.xml 中指定了 'outputFileNameMapping' 变量？
  • 类似 java.lang.ClassNotFoundException 的错误？这不是遗漏细节的地方。
  • 在“Eclipse Preferences --> Maven --> Installations”中添加maven安装，并在“Maven --> User Settings”中指定settings.xml文件。如果它从命令行工作，它应该与 Eclipse 以及相同的 maven 安装一起工作
  • 我推荐看看这里：github.com/khmarbaise/multienv-maven-plugin

标签： java eclipse maven m2eclipse m2e


【解决方案1】：

尝试从命令提示符编译您的代码，如果您遇到相同的错误，则意味着缺少依赖项。如果它工作正常，你需要执行 mvn eclipse:eclipse，并刷新你的项目

【讨论】：

  • 不要使用 eclipse:eclipse。请改用 m2e 插件！
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