java.lang.IllegalArgumentException“无法设置DAO字段”与Spring 4&休眠4 [英] java.lang.IllegalArgumentException "Can not set DAO field" with Spring 4 & Hibernate 4

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问题描述

我试图按照教程（使用STS）：
Spring 4和Hibernate 4集成教程第1部分：XML配置



一切都很顺利，除了执行。这是我在部署期间得到的内容： 

 < pre> 
 2015年1月17日6:39:22 org.apache.catalina.core.ApplicationContext log 
 SEVERE：StandardWrapper.Throwable 
 org.springframework.beans.factory.BeanCreationException：创建bean时出错名称为'homeController'：注入自动装载依赖失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装入字段：private com.example.web.dao.ActivityDAO com.example.web.HomeController.activityDAO;嵌套异常是java.lang.IllegalArgumentException：无法将com.example.web.dao.ActivityDAO字段com.example.web.HomeController.activityDAO设置为com.sun.proxy。$ Proxy32 $ b $ 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）
在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（Defaul tSingletonBeanRegistry.java:228）美元，org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:300 B $ B）
在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。的java：760）$在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:482 b $ b）
。在org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext（FrameworkServlet.java:658）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:624）
 
。在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（ FrameworkServlet.java:672）在org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext（FrameworkServlet.java:543 
）
在org.springframework.web.servlet.FrameworkServlet.initServletBean（FrameworkServlet.java： 484）
在org.springframework.web.servlet.HttpServletBean.init（HttpServletBean.java:136）在javax.servlet.GenericServlet.init（GenericServlet.java:158 
）
。在组织.apache.catalina.core.StandardWrapper.initServlet（StandardWrapper.java:1241）
在org.apache.catalina.core.StandardWrapper.loadServlet（StandardWrapper.java:1154）
在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.de ploy.TcContainerDeployer.startApplication（TcContainerDeployer.java:371）
 at com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication（TcContainerDeployer.java:351）
 at sun.reflect.NativeMethodAccessorImpl.invoke0（本地方法）
 at sun.reflect.NativeMethodAccessorImpl.invoke（Unknown Source）
 at sun.reflect.DelegatingMethodAccessorImpl.invoke（Unknown Source）
 at java.lang.reflect.Method.invoke（未知源）
 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）
在javax.management.remote.rmi.RMIConnectionImpl $ PrivilegedOperation.run（未知源）$ b $ java.util.AccessController.doPrivileged（Native方法）
在javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation （来源不明）
在javax.management.remote.rmi.RMIConnectionImpl.invoke（来源不明）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）
在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（未知来源）
在sun.rmi.transport.Transport $ 1.run（未知来源）
在sun.rmi.transport.Transport $ 1.run（未知来源）
在java.security.AccessController.doPrivileged（本地方法）
在sun.rmi.transport.Transport.serviceCall（未知源）
在sun.rmi.transport.tcp.TCPTransport.h andleMessages（Unknown Source）
 at sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run0（Unknown Source）
 at sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run（Unknown Source）
。在java.util.concurrent.ThreadPoolExecutor.runWorker（来源不明）
在java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（来源不明）
在java.lang.Thread.run（ org.springframework.beans.factory.BeanCreationException：未知来源）
。通过致无法自动装配领域：私人com.example.web.dao.ActivityDAO com.example.web.HomeController.activityDAO;嵌套异常是java.lang.IllegalArgumentException：无法将com.example.web.dao.ActivityDAO字段com.example.web.HomeController.activityDAO设置为com.sun.proxy。$ Proxy32 $ b $ at org.springframework.beans .factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:508）
在org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:87）
在org.springframework .beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:289）
 ... 54 more 
引起：java.lang.IllegalArgumentException：无法设置com.example.web.dao。 ActivityDAO场com.example.web.HomeController.activityDAO到com.sun.proxy。$ Proxy32 
在sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（来源不明）
在sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（未知小号乌尔斯河）
在sun.reflect.UnsafeObjectFieldAccessorImpl.set（来源不明）
在java.lang.reflect.Field.set（来源不明）
在org.springframework.beans.factory.annotation .AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:504）
 ... 56 more 
 
 2015年1月17日6:39:22 org.apache.catalina.core.StandardContext loadOnStartup 
 SEVERE：Servlet / web抛出load（）异常
 java.lang.IllegalArgumentException：无法将com.example.web.dao.ActivityDAO字段com.example.web.HomeController.activityDAO设置为com.sun .proxy。$ Proxy32 $在sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（来源不明）
在sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（来源不明）
在sun.reflect.UnsafeObjectFieldAccessorImpl.set（b $ b未知源）
在java.lang.reflect.Field.set（未知源）
在org.springframework.beans.factory.ann otation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject处org.springframework.beans org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:87）
（AutowiredAnnotationBeanPostProcessor.java:504）
。在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean上
（AbstractAutowireCapableBeanFactory.java:1185）在org.springframework.beans处
。在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean上的
（AbstractAutowireCapableBeanFactory.java:475）在org.springframework.beans处
。 factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:304）
 at org.springframework.beans.factory.s upport.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:228）
处org.springframework.beans.factory org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:300）
。在org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:195）
（DefaultListableBeanFactory.java:703）
。在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）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:624 
）
在org.springframework.we b.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:672）
处org.springframework.web.servlet org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext（FrameworkServlet.java:543）
。 FrameworkServlet.initServletBean（FrameworkServlet.java:484）
在org.springframework.web.servlet.HttpServletBean.init（HttpServletBean.java:136）
在javax.servlet.GenericServlet.init（GenericServlet.java：在org.apache.catalina.core.StandardWrapper.initServlet（StandardWrapper.java:1241 158）
）
。在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）在com.springsource.tcserver.serviceability.deploy.TcContainerDeployer.startApplication（TcContainerDeployer.java:371）
 
在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（未知源）
 at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke（未知源）
 at com.sun.jmx.remote.security.MBeanServerAccessController.invoke（未知源）
在javax.management.remote.rmi.RMIConnectionImpl.doOperation（未知源）
在javax.management.remote。 rmi.RMIConnectionImpl.access $ 300（来源不明）在javax.management.remote.rmi.RMIConnectionImpl $ PrivilegedOperation.run（来源不明）
在java.security.AccessController.doPrivileged 
（本机方法）
 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 （未知源）
在sun.rmi.server.UnicastServerRef.dispatch（未知源）
在sun.rmi.transport.Transport $ 1.run（未知源）
在sun.rmi。 transport.Transport $ 1.run（Unknown Source）
 at java.security.AccessController.doPrivileged（Native Method）
 at sun.rmi.transport.Transport.serviceCall（Unknown S乌尔斯河）
在sun.rmi.transport.tcp.TCPTransport.handleMessages（来源不明）
在sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run0（来源不明）
在阳光下.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run（未知源）
在java.util.concurrent.ThreadPoolExecutor.runWorker（未知源）
在java.util.concurrent.ThreadPoolExecutor $ Worker.run （未知来源）
在java.lang.Thread.run（未知来源）
< / pre>

使用此脚本创建的数据库中的活动表：

  CREATE TABLE IF NOT EXISTS`Example`.Activity`（
`id` INT NOT NULL AUTO_INCREMENT，
`Name` VARCHAR（32） NOT NULL，
 PRIMARY KEY（`id`），
 UNIQUE INDEX`id_UNIQUE`（`id` ASC））
 ENGINE = InnoDB

以下是Model类： 

  package com。 example.web.model; 
 
 public class Activity 
 {
 private int id; 
私人字符串名称; 
 
 public int getId（）{
 return id; 
} 
 public void setId（int id）{
 this.id = id; 
} 
 
 public String getName（）{
 return name; 
} 
 public void setName（String name）{
 this.name = name; 
 
 
 
 
 $ b $ p $这是我的servlet-context.xml 
 <？xml version =1.0encoding =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上下文：定义这个servlet的请求处理基础结构 - > 
 
 <！ - 启用Spring MVC @Controller编程模型 - > 
< mvc：annotation-driven /> 
 
 <！ - 通过高效地提供$ {webappRoot} / resources目录中的静态资源来处理/ resources / **的HTTP GET请求 - > 
< mvc：resources mapping =/ resources / **location =/ resources //> 
 
 <！ - 解析@Controllers为/ WEB-INF / views目录中的.jsp资源选择渲染的视图 - > 
< bean class =org.springframework.web.servlet.view.InternalResourceViewResolver> 
< property name =prefixvalue =/ WEB-INF / views //> 
< property name =suffixvalue =。jsp/> 
< / bean> 
 
< context：component-scan base-package =com.example.web/> 
< context：component-scan base-package =com.example.web.dao/> 
 
< bean id =dataSourceclass =org.apache.commons.dbcp2.BasicDataSourcedestroy-method =close> 
< property name =driverClassNamevalue =com.mysql.jdbc.Driver/> 
< property name =urlvalue =jdbc：mysql：// localhost：3306 / Example/> 
< property name =usernamevalue =example/> 
< property name =passwordvalue =eX $ @ mp1E/> 
< / bean> 
 
< bean id =sessionFactoryclass =org.springframework.orm.hibernate4.LocalSessionFactoryBean> 
< property name =dataSourceref =dataSource/> 
< property name =configLocationvalue =classpath：hibernate.cfg.xml/> 
< / bean> 
 
< tx：annotation-driven /> 
< bean id =transactionManagerclass =org.springframework.orm.hibernate4.HibernateTransactionManager> 
< property name =sessionFactoryref =sessionFactory/> 
< / bean> 
 
< bean id =ActivityDaoclass =com.example.web.dao.ActivityDAO> 
< constructor-arg> 
< ref bean =sessionFactory/> 
< / constructor-arg> 
< / bean> 
 
< / beans> 
  
以下是ActivityDAO：
  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; 
 
 
 $ / code> 
我已阅读过一些关于字段未被翻译的文章正确但它没有帮助我。在这里，我已经尝试过：
 
 
 
 无法autowire字段：Spring-Hibernate  
 
 
 
 无法autowire字段 
解决方案
您正在使用Spring JDK代理方法。你的 HomeController 有类似于 ActivityDAO 的字段：
 
 
  @Autowired 
私人的ActivityDAO 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 ：
  @Autowired 
 private IActivityDAO activityDAO; 
  
即可解决问题。 
 
 
阅读更多关于代理方法的信息：
  http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop-api.html#aop-pfb-proxy-types  
 
I am trying to follow the tutorial (using STS):
Spring 4 and Hibernate 4 Integration Tutorial Part 1: XML Configuration



Everything went smooth except execution. Here is what I am getting during deployment:
<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>

The Activity Table in the database created with this script:
CREATE TABLE IF NOT EXISTS `Example`.`Activity` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `Name` VARCHAR(32) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE INDEX `id_UNIQUE` (`id` ASC))
ENGINE = InnoDB

Here is the Model class:
package com.example.web.model;

public class Activity
{
    private int id;
    private String name;

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

This is my servlet-context.xml
<?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>

Here is the ActivityDAO:
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;
    }
}

I have read some post about fields are not being translated properly but it did not help me. Here what I have tried:



Could not autowire field: Spring-Hibernate



Could not autowire field
 解决方案 
You are using spring JDK proxy method. And your HomeController have a field like of type ActivityDAO like:
@Autowired
private ActivityDAO activityDAO;

however spring is unable to create class proxy using JDK proxy method.



You can change type of activityDAO field to IActivityDAO:
@Autowired
private IActivityDAO activityDAO;

that will solve the problem.



Read more about proxy methods here: 
http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop-api.html#aop-pfb-proxy-types


                        
这篇关于java.lang.IllegalArgumentException“无法设置DAO字段”与Spring 4&amp;休眠4的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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