java.lang.IllegalArgumentException : warning no match for this type name: UserDaoImpl [Xlint:invalidAbsoluteTypeName]

Question

我正在开发一个基于 Spring 3.0.2 的项目。从过去三天开始，它显示以下错误。

java.lang.IllegalArgumentException: warning no match for this type name: UserDaoImpl [Xlint:invalidAbsoluteTypeName]

我该如何解决这个错误？

我的 applicationContext 文件是:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context.xsd
            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">

        <aop:aspectj-autoproxy/>
        <context:component-scan base-package="web"/>
<!--        <import resource="appicationContext.xml"/>        -->

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="jsp/" p:suffix=".jsp" />  

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />


        <bean id="sessionFactory" class="hibernatefiles.HibernateUtil" factory-method="getSessionFactory"/>           

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

        <bean id="userDaoImpl"  class="dao.UserDaoImpl"/>

        <bean id = "profiler" class = "Profiler.AspectProfiler" />

     <bean name="/userRegistration.htm" class="web.UserController" depends-on="userDaoImpl">
            <property name="userDaoImpl" ref="userDaoImp"/>       
     </bean>       
</beans>

堆栈跟踪是:

   org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController' defined in file [D:\JAVA Stuffs\projects\NewSpringDemo\build\web\WEB-INF\classes\web\UserController.class]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: **UserDaoImpl [Xlint:invalidAbsoluteTypeName]**
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
        org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
        org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563)
        org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:872)
        org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:442)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:458)
        org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:339)
        org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:306)
        org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
        javax.servlet.GenericServlet.init(GenericServlet.java:160)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
        org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
        org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
        java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        java.lang.Thread.run(Thread.java:662)
    root cause

    java.lang.IllegalArgumentException: warning no match for this type name: UserDaoImpl [Xlint:invalidAbsoluteTypeName]
        org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:315)
        org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:204)
        org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:191)
        org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:172)
        org.springframework.aop.support.AopUtils.canApply(AopUtils.java:200)
        org.springframework.aop.support.AopUtils.canApply(AopUtils.java:254)
        org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:286)
        org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:117)
        org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:87)
        org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68)
        org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359)
        org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:407)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1418)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
        org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
        org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563)
        org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:872)
        org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:442)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:458)
        org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:339)
        org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:306)
        org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
        javax.servlet.GenericServlet.init(GenericServlet.java:160)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
        org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
        org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
        java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        java.lang.Thread.run(Thread.java:662)
...

userDaoImpl Autowiring 在带有 @Controller 注释的 UserController 类中:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package web;

import dao.UserDaoImpl;
import domain.UsersTable;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;

/**
 *
 * @author amit
 */

@Controller
@RequestMapping("/userRegistration.htm")
@SessionAttributes("user")
public class UserController {

    @Autowired
    private UserDaoImpl userDaoImpl;

    public UserDaoImpl getUserDaoImpl() {
        return userDaoImpl;
    }

    public void setUserDaoImpl(UserDaoImpl userDaoImpl) {
        this.userDaoImpl = userDaoImpl;
    }   

    @RequestMapping(method = RequestMethod.GET)
    public String showForm(ModelMap model) {
        System.out.println("Get request found. . . . *****************************");
        UsersTable user = new UsersTable();
        model.addAttribute("user", user);
        return "registrationForm";
    }

    @RequestMapping(method = RequestMethod.POST)
    public ModelAndView OnSubmit(@ModelAttribute("user") UsersTable user) {
        System.out.println("User Object is : "+user);
        userDaoImpl.saveUser(user);
        return new ModelAndView("userConfirm", "user", user);
    }
}

方面分析器:

package Profiler;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class AspectProfiler {
   @Pointcut("execution(* UserDaoImpl.mySave())")
            public void insertionProfiler(){ }

    @Around("insertionProfiler()")
            public void aroundInsertionProfiler(ProceedingJoinPoint pjp) throws Throwable{
            System.out.println("Before Insertion....");
            pjp.proceed();
            System.out.println("After saving the data I am back.");
    }

}

Answer 1

我不知道为什么今天我的 RSS 提要上出现了这个老问题，但为了记录，正确的答案是，在注释样式的 AspectJ 切入点中，您需要使用完全限定的类名 < strong>包括包名，即切入点应该是

@Pointcut("execution(* dao.UserDaoImpl.mySave())")

这就是 [Xlint:invalidAbsoluteTypeName] 首先暗示的意思。

我想知道为什么在 2011 年没有其他人注意到这一点。

---

更新:在一种情况下，您可能不需要指定完全限定的类名 (FQCN):如果切面恰好与所使用的类或注释位于完全相同的包中在切入点。但这很脆弱，因为如果你重构，在包之间移动类，方面仍然可以编译，但它的行为会中断。所以你最好使用 FQCN，让你的 IDE 帮助你重构类和包名的变化，与切面同步。