spring Bean创建异常Error created bean with name

【问题标题】：spring Bean creation exception Error creating bean with namespring Bean创建异常Error created bean with name
【发布时间】：2017-03-30 06:05:42
【问题描述】：

大家好，我是 Spring 新手，请解决我的问题，我遇到了 bean 创建异常，这是我的代码（我在动态 Web 项目中创建了这些）我正在尝试做一个简单的 Springmvc 项目。

文件名：login.jsp 

<form action="login.do" method="post">
username<input type="text" name="username"/>
password<input type="password" name="password"/>
<input type="submit" value="login"/>
</form>

文件名：web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <servlet>
  <servlet-name>loginapp</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <servlet-name>loginapp</servlet-name>
  <url-pattern>*.do</url-pattern>
  </servlet-mapping>


</web-app>

文件名：loginapp-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
        <bean id="id1" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
          <property name="mappings">
             <props>
                 <prop key="login.do">id2</prop>

        </props>
        </property>
        </bean>
        <bean id="id2" class="logincontroller"/>
</beans>

文件名：logincontroller.java

package springmvc;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class logincontroller implements Controller {

    @Override
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

        String username = request.getParameter("username");
        String password = request.getParameter("password");
        loginaction action = new loginaction();
        String result = action.verifyuser(username,password);
        if(result.equals("success"))
        return new ModelAndView("success.jsp");
        else
            return new ModelAndView("failure.jsp");


    }

}

文件名：成功.jsp

<% out.println("login success");%>

文件名：failure.jsp

<% out.println("failed");%>

在我运行 login.jsp 并将用户名输入为“admin”并将密码输入为“admin”后，我收到此错误

HTTP Status 500 - Servlet.init() for servlet loginapp threw exception


type Exception report

message Servlet.init() for servlet loginapp threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception
javax.servlet.ServletException: Servlet.init() for servlet loginapp threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


root cause
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'id1' defined in ServletContext resource [/WEB-INF/loginapp-servlet.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [logincontroller] for bean with name 'id2' defined in ServletContext resource [/WEB-INF/loginapp-servlet.xml]; nested exception is java.lang.ClassNotFoundException: logincontroller
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [logincontroller] for bean with name 'id2' defined in ServletContext resource [/WEB-INF/loginapp-servlet.xml]; nested exception is java.lang.ClassNotFoundException: logincontroller
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


root cause
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [logincontroller] for bean with name 'id2' defined in ServletContext resource [/WEB-INF/loginapp-servlet.xml]; nested exception is java.lang.ClassNotFoundException: logincontroller
    org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1327)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:594)
    org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1396)
    org.springframework.beans.factory.support.AbstractBeanFactory.isSingleton(AbstractBeanFactory.java:422)
    org.springframework.context.support.AbstractApplicationContext.isSingleton(AbstractApplicationContext.java:1002)
    org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:286)
    org.springframework.web.servlet.handler.SimpleUrlHandlerMapping.registerHandlers(SimpleUrlHandlerMapping.java:129)
    org.springframework.web.servlet.handler.SimpleUrlHandlerMapping.initApplicationContext(SimpleUrlHandlerMapping.java:104)
    org.springframework.context.support.ApplicationObjectSupport.initApplicationContext(ApplicationObjectSupport.java:120)
    org.springframework.web.context.support.WebApplicationObjectSupport.initApplicationContext(WebApplicationObjectSupport.java:73)
    org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(ApplicationObjectSupport.java:74)
    org.springframework.context.support.ApplicationContextAwareProcessor.invokeAwareInterfaces(ApplicationContextAwareProcessor.java:119)
    org.springframework.context.support.ApplicationContextAwareProcessor.postProcessBeforeInitialization(ApplicationContextAwareProcessor.java:94)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1545)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


root cause
java.lang.ClassNotFoundException: logincontroller
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285)
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
    org.springframework.util.ClassUtils.forName(ClassUtils.java:247)
    org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:395)
    org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1348)
    org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1319)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:594)
    org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1396)
    org.springframework.beans.factory.support.AbstractBeanFactory.isSingleton(AbstractBeanFactory.java:422)
    org.springframework.context.support.AbstractApplicationContext.isSingleton(AbstractApplicationContext.java:1002)
    org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:286)
    org.springframework.web.servlet.handler.SimpleUrlHandlerMapping.registerHandlers(SimpleUrlHandlerMapping.java:129)
    org.springframework.web.servlet.handler.SimpleUrlHandlerMapping.initApplicationContext(SimpleUrlHandlerMapping.java:104)
    org.springframework.context.support.ApplicationObjectSupport.initApplicationContext(ApplicationObjectSupport.java:120)
    org.springframework.web.context.support.WebApplicationObjectSupport.initApplicationContext(WebApplicationObjectSupport.java:73)
    org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(ApplicationObjectSupport.java:74)
    org.springframework.context.support.ApplicationContextAwareProcessor.invokeAwareInterfaces(ApplicationContextAwareProcessor.java:119)
    org.springframework.context.support.ApplicationContextAwareProcessor.postProcessBeforeInitialization(ApplicationContextAwareProcessor.java:94)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1545)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


note The full stack trace of the root cause is available in the Pivotal tc Runtime 3.2.2.RELEASE/8.5.6.B.RELEASE logs.

--------------------------------------------------------------------------------

Pivotal tc Runtime 3.2.2.RELEASE/8.5.6.B.RELEASE

这是我在 lib 文件夹中复制的 jar 文件：

commons-logging-1.2.jar
spring-aop-4.0.4.RELEASE.jar
spring-aop-4.0.4.RELEASE-javadoc.jar
spring-aop-4.0.4.RELEASE-sources.jar
spring-aspects-4.0.4.RELEASE.jar
spring-aspects-4.0.4.RELEASE-javadoc.jar
spring-aspects-4.0.4.RELEASE-sources.jar
spring-beans-4.0.4.RELEASE.jar
spring-beans-4.0.4.RELEASE-javadoc.jar
spring-beans-4.0.4.RELEASE-sources.jar
spring-build-src-4.0.4.RELEASE.jar
spring-context-4.0.4.RELEASE.jar
spring-context-4.0.4.RELEASE-javadoc.jar
spring-context-4.0.4.RELEASE-sources.jar
spring-context-support-4.0.4.RELEASE.jar
spring-context-support-4.0.4.RELEASE-javadoc.jar
spring-context-support-4.0.4.RELEASE-sources.jar
spring-core-4.0.4.RELEASE.jar
spring-core-4.0.4.RELEASE-javadoc.jar
spring-core-4.0.4.RELEASE-sources.jar
spring-expression-4.0.4.RELEASE.jar
spring-expression-4.0.4.RELEASE-javadoc.jar
spring-expression-4.0.4.RELEASE-sources.jar
spring-framework-bom-4.0.4.RELEASE.jar
spring-framework-bom-4.0.4.RELEASE-javadoc.jar
spring-framework-bom-4.0.4.RELEASE-sources.jar
spring-instrument-4.0.4.RELEASE.jar
spring-instrument-4.0.4.RELEASE-javadoc.jar
spring-instrument-4.0.4.RELEASE-sources.jar
spring-instrument-tomcat-4.0.4.RELEASE.jar
spring-instrument-tomcat-4.0.4.RELEASE-javadoc.jar
spring-instrument-tomcat-4.0.4.RELEASE-sources.jar
spring-jdbc-4.0.4.RELEASE.jar
spring-jdbc-4.0.4.RELEASE-javadoc.jar
spring-jdbc-4.0.4.RELEASE-sources.jar
spring-jms-4.0.4.RELEASE.jar
spring-jms-4.0.4.RELEASE-javadoc.jar
spring-jms-4.0.4.RELEASE-sources.jar
spring-messaging-4.0.4.RELEASE.jar
spring-messaging-4.0.4.RELEASE-javadoc.jar
spring-messaging-4.0.4.RELEASE-sources.jar
spring-orm-4.0.4.RELEASE.jar
spring-orm-4.0.4.RELEASE-javadoc.jar
spring-orm-4.0.4.RELEASE-sources.jar
spring-oxm-4.0.4.RELEASE.jar
spring-oxm-4.0.4.RELEASE-javadoc.jar
spring-oxm-4.0.4.RELEASE-sources.jar
spring-test-4.0.4.RELEASE.jar
spring-test-4.0.4.RELEASE-javadoc.jar
spring-test-4.0.4.RELEASE-sources.jar
spring-tx-4.0.4.RELEASE.jar
spring-tx-4.0.4.RELEASE-javadoc.jar
spring-tx-4.0.4.RELEASE-sources.jar
spring-web-4.0.4.RELEASE.jar
spring-web-4.0.4.RELEASE-javadoc.jar
spring-web-4.0.4.RELEASE-sources.jar
spring-webmvc-4.0.4.RELEASE.jar
spring-webmvc-4.0.4.RELEASE-javadoc.jar
spring-webmvc-4.0.4.RELEASE-sources.jar
spring-webmvc-portlet-4.0.4.RELEASE.jar
spring-webmvc-portlet-4.0.4.RELEASE-javadoc.jar
spring-webmvc-portlet-4.0.4.RELEASE-sources.jar
spring-websocket-4.0.4.RELEASE.jar
spring-websocket-4.0.4.RELEASE-javadoc.jar
spring-websocket-4.0.4.RELEASE-sources.jar

【问题讨论】：

  • 您的异常状态为nested exception is java.lang.ClassNotFoundException: logincontroller，而您的班级为springmvc.logincontroller，您必须明确添加班级的包名！在你的 bean 定义中解决这个问题，你就很好了
  • @vinod 作为一个好习惯，请在 java 中使用驼峰式命名法
  • 感谢 satya 的建议。谢谢japu，我的问题解决了

标签： java spring spring-mvc


【解决方案1】： 
<bean id="id2" class="logincontroller"/>

这条线导致了这个问题。

您需要在类属性中提及完全限定的类名。像这样的。

 <bean id="id2" class="X.logincontroller"/>

其中 X 是您的完全限定包名。

【讨论】：

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