java.lang.ClassNotFoundException：org.springframework.web.servlet.DispatcherServlet（即使我有spring-webmvc.jar）

时间：2014-02-21 05:27:29

标签： java spring hibernate spring-mvc servlets

我正在尝试使用spring mvc和hibernate创建临时级项目。在那种情况下，我下载了所有与spring和hibernate相关的jar。在运行我的项目时，我遇到了错误。 

java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet

但是我的知识DipatcherServlet类将在spring-webmvc.jar中提供，我也添加了这个jar。 请参阅以下代码并帮助我

的web.xml 

 <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://java.sun.com/xml/ns/javaee"
        xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
        id="WebApp_ID" version="2.5">
        <display-name>Spring Hello World</display-name>
        <welcome-file-list>
            <welcome-file>/</welcome-file>
        </welcome-file-list>

        <servlet>
            <servlet-name>springDispatcher</servlet-name>
            <servlet-class>
                org.springframework.web.servlet.DispatcherServlet
            </servlet-class>
          <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>/WEB-INF/config/spring-context.xml</param-value>
            </init-param>        
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>springDispatcher</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>

        <context-param>
            <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
            <param-value>true</param-value>
        </context-param>
    </web-app>

弹簧context.xml中

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:property-placeholder location="classpath:resources/database.properties" />
    <context:component-scan base-package="user.controller" />
    <mvc:annotation-driven />

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${database.driver}" />
        <property name="url" value="${database.url}" />
        <property name="username" value="${database.user}" />
        <property name="password" value="${database.password}" />
    </bean>

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="annotatedClasses">
            <list>
                <value>user.model.Employee</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>             
            </props>
        </property>
    </bean>

    <bean id="hibernateTransactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>

</beans>

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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.myproject</groupId>
    <artifactId>addaroot</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>addaroot Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <!-- <build>
        <finalName>${project.artifactId}-${project.version}</finalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <configuration>
                        <source>1.7</source>
                        <target>1.7</target>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build> -->

    <!-- <properties>
        <org.slf4j.version>1.6.4</org.slf4j.version>
        <org.springframework.version>3.1.0.RELEASE</org.springframework.version>
    </properties> -->

    <properties>
        <spring.version>3.1.2.RELEASE</spring.version>
    </properties>


    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.servlet.jsp.jstl</artifactId>
            <version>1.2.1</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- <dependency>
            <groupId>spring</groupId>
            <artifactId>spring</artifactId>
            <version>${spring.version}</version>
        </dependency> -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency> 
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-asm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.web.servlet</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency> -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>

        <!-- Hibernate dependencies. -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate</artifactId>
            <version>3.1.3</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-annotations</artifactId>
            <version>3.4.0.GA</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>3.6.8.Final</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.6</version>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>persistence-api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
        </dependency>
    </dependencies>
    <repositories>
        <repository>
          <id>maven2-repository.dev.java.net</id>
          <name>Java.net Repository for Maven</name>
          <url>http://download.java.net/maven/2/</url>
          <layout>default</layout>
        </repository>
        <!-- <repository>
            <id>maven-restlet</id>
            <name>Public online Restlet repository</name>
            <url>http://maven.restlet.org</url>
        </repository> -->
    </repositories>
    <build>
        <finalName>addaroot</finalName>
    </build> 
</project>

控制台

SEVERE: Servlet /addaroot threw load() exception
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:532)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:514)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:142)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:663)
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1642)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

Feb 21, 2014 10:46:03 AM org.apache.catalina.startup.HostConfig deployDescriptor

9 个答案:

答案 0 :(得分：2)

你能用这些修改你的pom和spring-context.xml，我相信它会对你有所帮助

 <?xml  version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
    http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
     http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">



<context:annotation-config />
<context:component-scan base-package="your base package" />


    <bean id="Check" class="yourbase.check.ModelClassfile">
</bean>

<bean id="jspViewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
</bean>

<bean id="propertyConfigurer"
                                                                                         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
    p:location="/WEB-INF/jdbc.properties" />

  <bean id="dataSource"
    class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
    p:driverClassName="${jdbc.driverClassName}"
    p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
     />


  <bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="configLocation">
        <value>classpath:hibernate.cfg.xml</value>
    </property>
    <property name="configurationClass">
        <value>org.hibernate.cfg.AnnotationConfiguration</value>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${jdbc.dialect}</prop>
            <prop key="hibernate.show_sql">true</prop>
        </props>
    </property>
</bean>





<tx:annotation-driven />

<bean id="transactionManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>


</beans>

------ ----- pom.xml的

                      <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>school</groupId>
<artifactId>management</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<description></description>
<build>
    <finalName>management</finalName>
    <plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.5</source>
                <target>1.5</target>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.0.1</version>
        </plugin>
    </plugins>
</build>
<dependencies>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>3.3.2.GA</version>
    </dependency>
    <dependency>
        <groupId>javax.transaction</groupId>
        <artifactId>jta</artifactId>
        <version>1.1</version>
    </dependency>

    <!-- dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> 
        <version>1.4.2</version> </dependency -->
    <dependency>
        <groupId>taglibs</groupId>
        <artifactId>standard</artifactId>
        <version>1.1.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.1.2</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.10</version>
    </dependency>
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>20030825.184428</version>
    </dependency>
    <dependency>
        <groupId>commons-pool</groupId>
        <artifactId>commons-pool</artifactId>
        <version>20030825.183949</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>
</dependencies>
<properties>
    <org.springframework.version>3.2.1.RELEASE</org.springframework.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>

---------------------------请修改你提到的spring-context文件----- ---------并检查您在web.xml中正确提供的spring-context文件的位置

                                      <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring-servlet.xml</param-value>
        </init-param>

答案 1 :(得分：2)

检查您的maven依赖项是否已添加到部署路径中。

执行此操作，请按照以下步骤操作。     1.转到项目的属性。     2.单击部署程序集。     3.单击右侧的“添加”按钮。     4.然后转到java构建路径。     5.然后它将显示maven依赖添加它。     6.再次尝试运行您的项目。

答案 2 :(得分：1)

你可能会错过viewClass试试这个

   <bean id="jspViewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
</bean>

您可以将Spring依赖关系更新为

    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>3.2.1.RELEASE</version>
</dependency>

并检查您的.j2文件夹中的jar文件是否已下载/在lib文件夹中检查

答案 3 :(得分：1)

在我的情况下，我使用常春藤，我遇到了同样的问题。你可以做两个中的任何一个

  1. 将库移动到 WEB-INF / lib 。因为这是 Eclipse搜索相应jar的文件夹。 OR
  2. 让Eclipse知道它可以从ivy库文件夹中搜索jar 这与 WEB-INF / lib 不同，即通过Project属性在Deployment Assembly中更改java构建路径。

    3. 对于第二种方法，您可以参考我的个人博客文章 - details post with screenshots。或者您也可以通过类似问题我提出here。

答案 4 :(得分：0)

如果您已经添加了jar，请检查添加它的位置。通常的方法是有一个lib文件夹，并在lib文件夹中添加所有的jar。这里需要注意的是，不要忘记将所有jar的jar添加到类的构建路径中。 您可以通过选择每个jar从项目资源管理器窗口本身执行此操作，也可以使用以下层次结构导入文件夹及其内容：Project - ＆gt; Prefrences - ＆gt;构建路径。

答案 5 :(得分：0)

我以一种直截了当的方式解决了它：

  1. 转到“服务器”视图。
  2. 选择您的服务器并右键单击＆＃34;清除...＆＃34;
  3. 重建申请。

答案 6 :(得分：0)

取决于您使用的弹簧版本，如果版本为4X，它们会避免在您的web.xml文件中声明servlet-dispatcher声明！

答案 7 :(得分：0)

我知道这已经很晚了，但也许有人面对它。

我也有这个问题。

我的项目不是一个maven项目。

我通过以下方式解决了这个问题：

1-右键单击项目并选择＆＃34;属性＆＃34;。

2-选择＆＃34;部署组装＆＃34;。

3-点击添加按钮。

4- select＆＃34; Java Build Path Entries＆＃34;。

5-点击下一步，选择所有罐子。

6-完成。

答案 8 :(得分：-1)

你可以非常好地使用localSessionFactory，因为没有任何伤害，可以像这样使用sessionfactory               @Autowired               private SessionFactory sessionFactory; 

            @Override
            public void createSection(Section section) {
            sessionFactory.getCurrentSession().save(section);
            }              

            @Override
          public void deleteSection(Section section) {
             sessionFactory.getCurrentSession().delete(section);

             }

           @Override
           public Section findBySectionID(int id) {
            Query query = sessionFactory.getCurrentSession().createQuery("from Section                   
          where id = " + id);

            return (Section) query.list().get(0);

        }

hibernate.cfg.xml.this是告诉我的模型对象的哪个和哪里的xml [java
   model database mapping objects] 

                 <?xml version='1.0' encoding='utf-8'?>
     <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate                
                   Configuration DTD//EN"
            "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">


   <hibernate-configuration>
<session-factory>
    <mapping class="something.packake.model.modelcalssName1" />
    <mapping class="something.packake.model.modelcalssName2" />
</session-factory>


        </hibernate-configuration>
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