我从tomcat 6.0安装目录中用servle-api.com替换了j2ee.jar: 这会产生下面的错误。我现在正试图找出原因。可能是什么问题。
我在配置文件中定义了一个bean: Sempedia-service.xml 如下
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="sempediaSearchService"
class="com.service.SempediaSearchManager" />
</beans>
我的 web.xml 指定以下bean:
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/Sempedia-service.xml,/WEB-INF/Sempedia-persistence.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
堆栈跟踪
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.service.SempediaSearchManager] for bean with name 'sempediaSearchService' defined in ServletContext resource [/WEB-INF/Sempedia-service.xml]; nested exception is java.lang.ClassNotFoundException: com.service.SempediaSearchManager
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1141)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:524)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1177)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:758)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:422)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
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:583)
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)
Caused by: java.lang.ClassNotFoundException: com.service.SempediaSearchManager
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:211)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:385)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1138)
... 24 more
答案 0 :(得分:15)
问题是您的webapp的类路径中没有名为com.service.SempediaSearchManager
的类。最可能的根本原因是:
/WEB-INF/Sempedia-service.xml
中的完全限定类名不正确;即班级名称是别的,
该类不在您的webapp的/WEB-INF/classes
目录树或/WEB-INF/lib
目录中的JAR文件中。
编辑:我唯一能想到的是ClassDefNotFoundException
实际上可能是早期类加载/静态初始化问题的结果。检查日志文件中的第一个堆栈跟踪,并查看嵌套异常,即“由...引起”链。 [如果类加载失败了一次,而你或Spring因某种原因再次调用Class.forName()
,那么Java实际上不会尝试第二次加载。相反,您将获得ClassDefNotFoundException
堆栈跟踪,但不能解释原始故障的真正原因。]
如果你仍然难过,你应该把Eclipse从图片中删除。以最终要部署它的形式创建WAR文件,然后从命令行创建:
手动关闭Tomcat
清理您的Tomcat webapp目录,
将WAR文件复制到webapp目录中,
启动Tomcat。
如果这不能直接解决问题,请查看Tomcat上已部署的webapp目录,以验证“缺失”类是否在正确的位置。
答案 1 :(得分:2)
我得到了同样的错误,原因是目录:
U:..... WEB \的WebRoot \ WEB-INF \类\ COM \ yourcompany \ CC \ DAO
已损坏(目录或文件无法读取或损坏) 解决了
答案 2 :(得分:1)
我遇到了同样的问题。当我检查build / classes文件夹时,没有生成任何类。按照规定here将Maven Dependency添加到“部署Web程序集”之后 问题已经解决。
答案 3 :(得分:1)
检查你的依赖关系。
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SchoolApp</groupId>
<artifactId>SchoolApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<hibernate.version>4.2.0.Final</hibernate.version>
<mysql.connector.version>5.1.21</mysql.connector.version>
<spring.version>3.2.2.RELEASE</spring.version>
</properties>
<dependencies>
<!-- DB related dependencies -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency>
<!-- SPRING -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${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-tx</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>${spring.version}</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>3.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>3.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>3.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>3.1.3.RELEASE</version>
</dependency>
<!-- CGLIB is required to process @Configuration classes -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<!-- Servlet API and JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test-mvc</artifactId>
<version>1.0.0.M1</version>
<scope>test</scope>
</dependency>
</dependencies>
<repositories>
<repository>
<id>spring-maven-milestone</id>
<name>Spring Maven Milestone Repository</name>
<url>http://maven.springframework.org/milestone</url>
</repository>
</repositories>
<build>
<finalName>spr-mvc-hib</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
答案 4 :(得分:0)
我有同样的问题。我根据 Stephen的建议检查了我的/ WEB-INF /课程:
该类不在您的webapp的/ WEB-INF / classes目录树中,也不在/ WEB-INF / lib目录中的JAR文件中。
我发现我有一个过时的jar文件。用最新的jar文件替换它解决了这个问题。
答案 5 :(得分:0)
将此留给未来的访客:
在我的情况下,缺少/ WEB-INF / classes目录。如果您使用的是Eclipse,请确保.settings / org.eclipse.wst.common.component正确(项目设置中的Deployment Assembly)。
在我的情况下它缺少
<wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
<wb-resource deploy-path="/WEB-INF/classes" source-path="/src/test/resources"/>
此文件也是Anuj提到的常见错误源(缺少其他项目的依赖关系)。
否则,希望其他答案(或“问题”标签)可以帮助您。
答案 6 :(得分:0)
我也遇到过类似的问题
所以
我只是做
1.update Maven项目
2。安装maven。
答案 7 :(得分:0)
我不知道这是否与您的问题有关,我也遇到了类似的问题,
1)在Eclipse中,右键单击服务器并清理
如果仍然无法正常工作
2)导出项目并删除该项目,创建具有相同名称的项目,然后导入该项目并将该项目添加到服务器并运行。