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IntelliJ IDEA基于maven构建的web项目找不到jar包

基于maven构建的springMVC项目，下载好jar包import后，运行提示ClassNotFoundException:

 java.lang.ClassNotFoundException: org.springframework.web.util.Log4jConfigListener

    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1308)

    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1142)

    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:518)

    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:499)

    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)

    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4734)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)

    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)

    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)

    at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1692)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:483)

    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)

    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:465)

    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:415)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:483)

    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)

    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

    at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1466)

    at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)

    at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)

    at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1399)

    at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:828)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:483)

    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)

    at sun.rmi.transport.Transport$1.run(Transport.java:178)

    at sun.rmi.transport.Transport$1.run(Transport.java:175)

    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:174)

    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:557)

    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:812)

    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:671)

    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)1
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查看项目目录下的out文件夹下的exploded项目文件，发现WEB-INF里的lib文件夹下没有用maven下的那些jar包！

这里写图片描述
找到个解决方案，右击项目，Project Structure -> Artifacts -> Output Layout，新建lib文件夹，将基于maven导入的jar包全部加进去，重新运行，顺利解决。

不知道是不是我配置的问题，按道理来说pom.xml配置好就可以直接导入了啊，起码Eclipse是可以的，由于刚转来IntelliJ IDEA，还不能定位问题在哪里，只是找了这个解决方法，如果以后找到了更好的方法再更新。附上pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<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>com.whu.fly</groupId>

    <artifactId>FileManager</artifactId>

    <version>1.0-SNAPSHOT</version>


    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <springversion>4.3.3.RELEASE</springversion>

        <junitversion>4.12</junitversion>

    </properties>

         <repositories>

             <repository>

                <id>CN</id>

                <name>OSChina Central</name>

                <url>http://maven.oschina.net/content/groups/public/</url>

                <layout>default</layout>

                <snapshots>

                    <enabled>false</enabled>

                </snapshots>

            </repository>

        </repositories>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>${junitversion}</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>log4j</groupId>

            <artifactId>log4j</artifactId>

            <version>1.2.17</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aop</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aspects</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-beans</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context-support</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-expression</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jms</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-orm</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-oxm</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-tx</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-test</artifactId>

            <version>${springversion}</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>


        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>jstl</artifactId>

            <version>1.2</version>

            <type>jar</type>

            <scope>compile</scope>

        </dependency>


        <dependency>

            <groupId>commons-collections</groupId>

            <artifactId>commons-collections</artifactId>

            <version>3.2.2</version>

        </dependency>


        <dependency>

            <groupId>commons-logging</groupId>

            <artifactId>commons-logging</artifactId>

            <version>1.1.1</version>

        </dependency>


        <dependency>

            <groupId>org.apache.commons</groupId>

            <artifactId>commons-dbcp2</artifactId>

            <version>2.1.1</version>

        </dependency>

        <dependency>

            <groupId>net.sf.json-lib</groupId>

            <artifactId>json-lib</artifactId>

            <version>2.4</version>

            <classifier>jdk15</classifier>

        </dependency>

    </dependencies>

    <build>

        <finalName>FileManager</finalName>

    </build>

</project>1
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2017.05.04更新：

新建Project的时候勾选“Create from archetype”，然后选择maven-archetype-webapp，这样项目建完后就会自动下载模板，jar包找不到的情况自然也就没有了：
这里写图片描述
建立完的项目结构如下：

2017.08.22更新：

基于SSM（Spring+SpringMVC+Mybatis）搭建了一个Java后台模板，可以直接下载使用。集成了日志框架logback和前台渲染模板FreeMarker。

详情：README

项目下载：GitHub

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原文地址：https://www.cnblogs.com/jpfss/p/8117841.html