我正在尝试运行maven项目，当我运行mvn install时一切正常我获得了构建成功qnd当我尝试午餐时我得到了以下异常：
Exception in thread "main" java.lang.ClassNotFoundException: org.eclipse.jetty.Server
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:86)
at org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.nodeClass(XmlConfiguration.java:364)
at org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:292)
at org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:248)
at net.es.oscars.wbui.http.WebApp.main(WebApp.java:44)
当我运行mvn依赖：tree时，我得到了以下结果：
maven-dependency-plugin:2.8:tree (default-cli) @ wbui ---
[INFO] net.es.oscars:wbui:jar:0.0.1-SNAPSHOT
[INFO] +- net.es.oscars:utils:jar:0.0.1-SNAPSHOT:compile
[INFO] | +- net.perfsonar:ps-api:jar:0.5:compile
[INFO] | | +- commons-httpclient:commonhttpclient:jar:3.0.1:compile
[INFO] | | | +- junit:junit:jar:3.8.1:compile
[INFO] | | | \- commons-codec:commons-codec:jar:1.2:compile
[INFO] | | +- org.jdom:jdom:jar:1.1:compile
[INFO] | | +- org.jdom:jaxen-jdom:jar:1.0-FCS:compile
[INFO] | | +- org.jdom:jaxen-core:jar:1.0-FCS:compile
[INFO] | | \- org.jdom:saxpath:jar:1.0-FCS:compile
[INFO] | +- org.jyaml:jyaml:jar:1.3:compile
[INFO] | +- log4j:log4j:jar:1.2.17:compile
[INFO] | +- net.es.oscars:common-logging:jar:0.0.1-SNAPSHOT:compile
[INFO] | | \- gov.lbl:netlogger:jar:4.1.2:compile
[INFO] | +- net.es.oscars:common-soap:jar:0.0.1-SNAPSHOT:compile
[INFO] | +- org.hibernate:hibernate-core:jar:3.3.1.GA:compile
[INFO] | | +- antlr:antlr:jar:2.7.6:compile
[INFO] | | +- commons-collections:commons-collections:jar:3.1:compile
[INFO] | | \- dom4j:dom4j:jar:1.6.1:compile
[INFO] | | \- xml-apis:xml-apis:jar:1.0.b2:compile
[INFO] | +- org.mortbay.jetty:jetty:jar:6.1.16:compile
[INFO] | | +- org.mortbay.jetty:jetty-util:jar:6.1.16:compile
[INFO] | | \- org.mortbay.jetty:servlet-api:jar:2.5-20081211:compile
[INFO] | +- org.opensymphony.quartz:quartz:jar:1.6.1:compile
[INFO] | +- org.apache.ws.security:wss4j:jar:1.5.8:compile
[INFO] | | +- commons-logging:commons-logging:jar:1.1:compile
[INFO] | | | +- logkit:logkit:jar:1.0.1:compile
[INFO] | | | +- avalon-framework:avalon-framework:jar:4.1.3:compile
[INFO] | | | \- javax.servlet:servlet-api:jar:2.3:compile
[INFO] | | +- org.apache.santuario:xmlsec:jar:1.4.3:compile
[INFO] | | \- xalan:xalan:jar:2.7.1:compile
[INFO] | | \- xalan:serializer:jar:2.7.1:compile
[INFO] | +- org.apache.cxf:cxf-rt-bindings-soap:jar:2.2.5:compile
[INFO] | | +- org.apache.cxf:cxf-api:jar:2.2.5:compile
[INFO] | | | +- org.apache.geronimo.specs:geronimo-activation_1.1_spec:jar:1.0.2:compile
[INFO] | | | +- org.apache.ws.commons.schema:XmlSchema:jar:1.4.5:compile
[INFO] | | | +- org.apache.geronimo.specs:geronimo-annotation_1.0_spec:jar:1.1.1:compile
[INFO] | | | +- org.codehaus.woodstox:wstx-asl:jar:3.2.9:compile
[INFO] | | | +- org.apache.neethi:neethi:jar:2.0.4:compile
[INFO] | | | \- org.apache.cxf:cxf-common-schemas:jar:2.2.5:compile
[INFO] | | +- org.apache.cxf:cxf-tools-common:jar:2.2.5:compile
[INFO] | | | +- wsdl4j:wsdl4j:jar:1.6.2:compile
[INFO] | | | \- com.sun.xml.bind:jaxb-impl:jar:2.1.12:compile
[INFO] | | +- org.apache.cxf:cxf-rt-databinding-jaxb:jar:2.2.5:compile
[INFO] | | | \- org.apache.geronimo.specs:geronimo-javamail_1.4_spec:jar:1.6:compile
[INFO] | | \- javax.xml.bind:jaxb-api:jar:2.1:compile
[INFO] | +- org.apache.cxf:cxf-rt-ws-security:jar:2.2.5:compile
[INFO] | | +- org.apache.cxf:cxf-rt-core:jar:2.2.5:compile
[INFO] | | | \- org.springframework:spring-core:jar:2.5.5:compile
[INFO] | | +- org.apache.cxf:cxf-common-utilities:jar:2.2.5:compile
[INFO] | | | +- org.springframework:spring-beans:jar:2.5.5:compile
[INFO] | | | +- org.springframework:spring-context:jar:2.5.5:compile
[INFO] | | | | \- aopalliance:aopalliance:jar:1.0:compile
[INFO] | | | +- org.apache.geronimo.specs:geronimo-stax-api_1.0_spec:jar:1.0.1:compile
[INFO] | | | \- commons-lang:commons-lang:jar:2.4:compile
[INFO] | | +- javax.xml.soap:saaj-api:jar:1.3:compile
[INFO] | | \- org.bouncycastle:bcprov-jdk15:jar:1.43:runtime
[INFO] | +- org.apache.cxf:cxf-rt-frontend-jaxws:jar:2.2.5:compile
[INFO] | | +- xml-resolver:xml-resolver:jar:1.2:compile
[INFO] | | +- org.apache.geronimo.specs:geronimo-jaxws_2.1_spec:jar:1.0:compile
[INFO] | | +- org.apache.geronimo.specs:geronimo-ws-metadata_2.0_spec:jar:1.1.2:compile
[INFO] | | +- asm:asm:jar:2.2.3:compile
[INFO] | | +- org.apache.cxf:cxf-rt-bindings-xml:jar:2.2.5:compile
[INFO] | | +- org.apache.cxf:cxf-rt-frontend-simple:jar:2.2.5:compile
[INFO] | | +- org.apache.cxf:cxf-rt-ws-addr:jar:2.2.5:compile
[INFO] | | \- com.sun.xml.messaging.saaj:saaj-impl:jar:1.3.2:compile
[INFO] | +- org.apache.cxf:cxf-rt-transports-http:jar:2.2.5:compile
[INFO] | | \- org.springframework:spring-web:jar:2.5.5:compile
[INFO] | \- org.apache.cxf:cxf-rt-transports-http-jetty:jar:2.2.5:compile
[INFO] | \- org.apache.geronimo.specs:geronimo-servlet_2.5_spec:jar:1.2:compile
[INFO] +- javax.servlet:javax.servlet-api:jar:3.1.0:compile
[INFO] +- net.es.oscars:oscars-war:war:0.0.1-SNAPSHOT:provided
[INFO] +- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.7:compile
[INFO] +- org.eclipse.jetty:jetty-server:jar:9.3.0.M0:compile
[INFO] | +- org.eclipse.jetty:jetty-http:jar:9.3.0.M0:compile
[INFO] | | \- org.eclipse.jetty:jetty-util:jar:9.3.0.M0:compile
[INFO] | \- org.eclipse.jetty:jetty-io:jar:9.3.0.M0:compile
[INFO] +- org.eclipse.jetty:jetty-webapp:jar:9.3.0.M0:compile
[INFO] | \- org.eclipse.jetty:jetty-xml:jar:9.3.0.M0:compile
[INFO] \- org.eclipse.jetty:jetty-servlet:jar:9.3.0.M0:compile
[INFO] \- org.eclipse.jetty:jetty-security:jar:9.3.0.M0:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
这是我的pom.xml文件：
<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>
<artifactId>wbui</artifactId>
<name>OSCARS WBUI</name>
<parent>
<groupId>net.es.oscars</groupId>
<artifactId>OSCARS</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<properties>
<jetty.version>9.3.0.M0</jetty.version>
</properties>
<!-- puts all code & libraries in one jar -->
<pluginRepositories>
<pluginRepository>
<id>onejar-maven-plugin.googlecode.com</id>
<url>http://onejar-maven-plugin.googlecode.com/svn/mavenrepo</url>
</pluginRepository>
</pluginRepositories>
<dependencies>
<!-- OSCARS utilities (from local repository) -->
<dependency>
<groupId>net.es.oscars</groupId>
<artifactId>utils</artifactId>
<version>${oscars.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- kludge to get dependency on local module oscars-war without
including war file -->
<dependency>
<groupId>net.es.oscars</groupId>
<artifactId>oscars-war</artifactId>
<version>${oscars.version}</version>
<type>war</type>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<!-- Jetty -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>9.3.0.M0</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-webapp</artifactId>
<version>9.3.0.M0</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlet</artifactId>
<version>9.3.0.M0</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- puts all code & libraries in one jar -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedClassifierName>one-jar</shadedClassifierName>
<shadedArtifactAttached>true</shadedArtifactAttached>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<artifactSet>
<excludes>
<exclude>org.apache.geronimo.specs:geronimo-servlet_2.5_spec</exclude>
<exclude>org.mortbay.jetty:servlet-api</exclude>
<exclude>javax.servlet:servlet-api</exclude>
</excludes>
</artifactSet>
<transformers>
<!-- add Main-Class to manifest file -->
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>net.es.oscars.wbui.http.WebApp</mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.handlers</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.schemas</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/services/com.sun.tools.xjc.Plugin</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/cxf/cxf.extension</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/extensions.xml</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/cxf/extensions.xml</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/cxf/bus-extensions.txt</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/cxf/bus-extensions.xml</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/wsdl.plugin.xml</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/tools.service.validator.xml</resource>
</transformer>
<transformer implementation="org.apache.cxf.maven.PluginTransformer">
<resource>META-INF/tools-plugin.xml</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
<resource>META-INF/cxf/java2wsbeans.xml</resource>
</transformer>
<transformer implementation="org.apache.cxf.maven.CXFAllTransformer" />
</transformers>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-buildtools</artifactId>
<version>2.2.12</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
</dependencies>
</plugin>
<!-- specifically use java 1.5 to compile -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
package net.es.oscars.wbui.http;
import java.util.Map;
import java.io.File;
import java.io.FileInputStream;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;
import org.eclipse.jetty.xml.XmlConfiguration;
import net.es.oscars.utils.config.*;
import net.es.oscars.utils.svc.ServiceNames;
public class WebApp {
public static ContextConfig cc = null;
public static void main(String[] args) throws Exception {
cc = ContextConfig.getInstance(ServiceNames.SVC_WBUI);
cc.setServiceName(ServiceNames.SVC_WBUI);
String context = "PRODUCTION";
if (args.length > 0) {
context = args[1];
}
String warFile = null;
String warTempDir = null;
Server server = new Server();
cc.setContext(context);
System.setProperty("context",context);
System.out.println("starting WBUI with context "+ context);
try {
cc.loadManifest(ServiceNames.SVC_WBUI, ConfigDefaults.MANIFEST); // manifest.yaml
cc.setLog4j();
String configFile = cc.getFilePath(ConfigDefaults.CONFIG);
Map config = ConfigHelper.getConfiguration(configFile);
Map http = (Map) config.get("http");
warFile = (String) http.get("warFile");
warTempDir = (String) http.get("warTempDir");
String jettyConf = cc.getFilePath("jetty.xml");
XmlConfiguration configuration = new XmlConfiguration(new FileInputStream(jettyConf));
configuration.configure(server);
} catch (ConfigException ex) {
System.out.println("caught ConfigurationException " + ex.getMessage());
System.exit(-1);
}
WebAppContext webapp = new WebAppContext();
webapp.setContextPath("/OSCARS");
webapp.setWar(warFile);
if(warTempDir != null && !warTempDir.equals("")){
webapp.setTempDirectory(new File(warTempDir));
}
server.setHandler(webapp);
server.start();
server.join();
}
}
所以任何想法如何解决这个问题!!!!
答案 0 :(得分：7)
你的dependency:tree有一个古老的Jetty版本。
org.mortbay.jetty:jetty:jar:6.1.16:compile
那不会起作用。
你需要修复net.es.oscars:utils:jar不要使用那个古老的，早在EOL（End of Life）版本的Jetty。
您的pom.xml引用了不稳定的里程碑版本
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>9.3.0.M0</version>
</dependency>
使用稳定版本的Jetty。
查看https://www.eclipse.org/jetty/download.html以查看其稳定性（里程碑版本从未列在那里）
另请参阅Jetty文档以了解主要码头版本的总体列表。 https://www.eclipse.org/jetty/documentation/current/what-jetty-version.html
截至本回答时，最新的稳定版本为9.4.18.v20190429
至于java.lang.ClassNotFoundException，您需要先修复您的依赖项。如果在修复依赖项后问题仍然存在，请考虑发布创建类加载器的方式，层次结构以及如何使用XmlConfiguration（以及从哪个类加载器）。