我最近在 Eclipse Helios IDE 中部署基于 Spring 3.0 的 Web 应用程序时遇到了一个问题。我在BuildPath -> Libraries -> Add External Jars from my local repository（maven local repo）中包含了 spring 及其依赖项 jar 文件。当我试图启动服务器时，它会抛出 ClassNotFoundException，
注意：我可以在Eclipse Buildpath-Libraries中找到我的 Spring-web jar 。
SEVERE: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at `enter code here`org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3786)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
.classpath 文件：
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="rest-client/src/main/java"/>
<classpathentry kind="src" path="rtsocketdatamonitor/src/main/java"/>
<classpathentry kind="src" path="rtsocketdatamonitor/src/main/resources"/>
<classpathentry kind="src" path="rest-client/src/main/resources"/>
<classpathentry kind="var" path="M2_REPO/commons-lang/commons-lang/2.2/commons-lang-2.2.jar" sourcepath="M2_REPO/commons-lang/commons-lang/2.2/commons-lang-2.2-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/log4j/log4j/1.2.14/log4j-1.2.14.jar" sourcepath="M2_REPO/log4j/log4j/1.2.14/log4j-1.2.14-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/slf4j/slf4j-api/1.6.2/slf4j-api-1.6.2.jar" sourcepath="M2_REPO/org/slf4j/slf4j-api/1.5.6/slf4j-api-1.5.6-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/commons-collections/commons-collections/3.1/commons-collections-3.1.jar" sourcepath="M2_REPO/commons-collections/commons-collections/3.1/commons-collections-3.1-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar" sourcepath="M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Final/hibernate-commons-annotations-3.2.0.Final.jar" sourcepath="M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Final/hibernate-commons-annotations-3.2.0.Final-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/hibernate/javax/persistence/hibernate-jpa-2.0-api/1.0.0.Final/hibernate-jpa-2.0-api-1.0.0.Final.jar" sourcepath="M2_REPO/org/hibernate/javax/persistence/hibernate-jpa-2.0-api/1.0.0.Final/hibernate-jpa-2.0-api-1.0.0.Final-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/javax/transaction/jta/1.1/jta-1.1.jar" sourcepath="M2_REPO/javax/transaction/jta/1.1/jta-1.1-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/hibernate/hibernate-entitymanager/3.6.0.Final/hibernate-entitymanager-3.6.0.Final.jar" sourcepath="M2_REPO/org/hibernate/hibernate-entitymanager/3.6.0.Final/hibernate-entitymanager-3.6.0.Final-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/cglib/cglib/2.2/cglib-2.2.jar" sourcepath="M2_REPO/cglib/cglib/2.2/cglib-2.2-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/javassist/javassist/3.12.0.GA/javassist-3.12.0.GA.jar" sourcepath="M2_REPO/javassist/javassist/3.12.0.GA/javassist-3.12.0.GA-sources.jar"/>
<classpathentry exported="true" kind="var" path="M2_REPO/org/slf4j/slf4j-log4j12/1.5.6/slf4j-log4j12-1.5.6.jar" sourcepath="M2_REPO/org/slf4j/slf4j-log4j12/1.5.6/slf4j-log4j12-1.5.6-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-aop/3.0.5.RELEASE/spring-aop-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-aop/3.0.5.RELEASE/spring-aop-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0.jar" sourcepath="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-asm/3.0.5.RELEASE/spring-asm-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-asm/3.0.5.RELEASE/spring-asm-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-beans/3.0.5.RELEASE/spring-beans-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-beans/3.0.5.RELEASE/spring-beans-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-core/3.0.5.RELEASE/spring-core-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-core/3.0.5.RELEASE/spring-core-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar" sourcepath="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-aspects/3.0.5.RELEASE/spring-aspects-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-aspects/3.0.5.RELEASE/spring-aspects-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-context/3.0.5.RELEASE/spring-context-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-context/3.0.5.RELEASE/spring-context-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-expression/3.0.5.RELEASE/spring-expression-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-expression/3.0.5.RELEASE/spring-expression-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-context-support/3.0.5.RELEASE/spring-context-support-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-context-support/3.0.5.RELEASE/spring-context-support-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-test/3.0.5.RELEASE/spring-test-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-test/3.0.5.RELEASE/spring-test-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-jdbc/3.0.5.RELEASE/spring-jdbc-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-jdbc/3.0.5.RELEASE/spring-jdbc-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-tx/3.0.5.RELEASE/spring-tx-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-tx/3.0.5.RELEASE/spring-tx-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-orm/3.0.5.RELEASE/spring-orm-3.0.5.RELEASE.jar" sourcepath="M2_REPO/org/springframework/spring-orm/3.0.5.RELEASE/spring-orm-3.0.5.RELEASE-sources.jar"/>
<classpathentry kind="var" path="M2_REPO/org/springframework/spring-web/3.0.5.RELEASE/spring-web-3.0.5.RELEASE.jar" sourcepath="/SPRING_SOURCE_3.0.1/org.springframework.web-sources-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="var" path="M2_REPO/commons-codec/commons-codec/1.4/commons-codec-1.4.jar"/>
<classpathentry kind="lib" path="D:/ProgramJR/spring/servlet-api-2.5.jar" sourcepath="C:/Users/sasikumar.s/.m2/repository/javax/servlet/servlet-api/2.5/servlet-api-2.5-sources.jar"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6">
<attributes>
<attribute name="owner.project.facets" value="java"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
<classpathentry kind="output" path="build/classes"/>
</classpath>
但是，当我在 WEB-INF/lib 文件夹中添加 jar 时，应用程序运行正常。（找不到上述错误）
请澄清“在构建路径中添加 jars”和 WEB-INF/lib 文件夹之间的区别。我对向每个项目添加 jar 不感兴趣。
感谢你的帮助。