java.lang.IllegalArgumentException“;无法设置DAO字段“;与春天4&;冬眠4
我正在尝试遵循教程(使用STS): Spring4和Hibernate4集成教程第1部分:XML配置 除了执行外,一切都很顺利。以下是我在部署期间得到的信息:java.lang.IllegalArgumentException“;无法设置DAO字段“;与春天4&;冬眠4,java,spring,hibernate,maven,dao,Java,Spring,Hibernate,Maven,Dao,我正在尝试遵循教程(使用STS): Spring4和Hibernate4集成教程第1部分:XML配置 除了执行外,一切都很顺利。以下是我在部署期间得到的信息: <pre> Jan 17, 2015 6:39:22 PM org.apache.catalina.core.ApplicationContext log SEVERE: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationExcept
<pre>
Jan 17, 2015 6:39:22 PM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.example.web.dao.ActivityDAO com.example.web.HomeController.activityDAO; nested exception is java.lang.IllegalArgumentException: Can not set com.example.web.dao.ActivityDAO field com.example.web.HomeController.activityDAO to com.sun.proxy.$Proxy32
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4944)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5230)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication(TcContainerDeployer.java:371)
at com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication(TcContainerDeployer.java:351)
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown Source)
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 sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.example.web.dao.ActivityDAO com.example.web.HomeController.activityDAO; nested exception is java.lang.IllegalArgumentException: Can not set com.example.web.dao.ActivityDAO field com.example.web.HomeController.activityDAO to com.sun.proxy.$Proxy32
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 54 more
Caused by: java.lang.IllegalArgumentException: Can not set com.example.web.dao.ActivityDAO field com.example.web.HomeController.activityDAO to com.sun.proxy.$Proxy32
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
at java.lang.reflect.Field.set(Unknown Source)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:504)
... 56 more
Jan 17, 2015 6:39:22 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /web threw load() exception
java.lang.IllegalArgumentException: Can not set com.example.web.dao.ActivityDAO field com.example.web.HomeController.activityDAO to com.sun.proxy.$Proxy32
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
at java.lang.reflect.Field.set(Unknown Source)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:504)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4944)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5230)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication(TcContainerDeployer.java:371)
at com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication(TcContainerDeployer.java:351)
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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown Source)
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 sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
</pre>
以下是模型类:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<context:component-scan base-package="com.example.web" />
<context:component-scan base-package="com.example.web.dao"/>
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/Example"/>
<property name="username" value="example"/>
<property name="password" value="eX$@mp1E"/>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:hibernate.cfg.xml" />
</bean>
<tx:annotation-driven />
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="ActivityDao" class="com.example.web.dao.ActivityDAO">
<constructor-arg>
<ref bean="sessionFactory" />
</constructor-arg>
</bean>
</beans>
这是我的servlet-context.xml
package com.example.web.dao;
import java.util.List;
import com.example.web.model.Activity;
import org.hibernate.Criteria;
import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Transactional;
public class ActivityDAO implements IActivityDAO
{
private SessionFactory sessionFactory;
public ActivityDAO(SessionFactory sessionFactory)
{
this.sessionFactory = sessionFactory;
}
@Override
@Transactional
public List<Activity> All()
{
@SuppressWarnings("unchecked")
List<Activity> listActivity = (List<Activity>) sessionFactory.getCurrentSession()
.createCriteria(Activity.class)
.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY).list();
return listActivity;
}
}
以下是活动DAO:
@Autowired
private ActivityDAO activityDAO;
package com.example.web.dao;
导入java.util.List;
导入com.example.web.model.Activity;
导入org.hibernate.Criteria;
导入org.hibernate.SessionFactory;
导入org.springframework.transaction.annotation.Transactional;
公共类ActivityDAO实现IActivityDAO
{
私人会话工厂会话工厂;
公共活动DAO(SessionFactory SessionFactory)
{
this.sessionFactory=sessionFactory;
}
@凌驾
@交易的
公开名单
您使用的是spring JDK代理方法。您的HomeController
有一个类似ActivityDAO
类型的字段:
@Autowired
private IActivityDAO activityDAO;
但是spring无法使用JDK代理方法创建类代理
您可以将activityDAO
字段的类型更改为IActivityDAO
:
这将解决问题
请在此处阅读有关代理方法的更多信息:
Works…你能告诉我为什么我要使用这个例子吗?或者至少在一个教程中声明了这个例子?谢谢!@GreenDeveloper什么教程?Google this:[Spring 4和Hibernate 4集成教程第1部分:XML配置]我不能在这里发布链接。@GreenDeveloper为什么不能?并不禁止在stackoverflow上发布外部链接。有时需要/建议也发布相关部分,以防目标站点崩溃。但这不是问题的本质,也不是答案,而是评论-;)(我会看一看)在教程中,UserDAO
是一个接口,UserDAOImpl
是实现(类)。您使用了不同的命名约定,当接口命名为IActivityDAO
时,ActivityDAO
是实现。
@Autowired
private ActivityDAO activityDAO;
@Autowired
private IActivityDAO activityDAO;