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spring注入的问题，求帮助

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applicationContext-user.xml配置：



<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.1.xsd
            http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">
            
        <!-- 注解扫描 -->
<!--         <context:component-scan base-package="com.yht.action"/> -->
<!--         <context:component-scan base-package="com.yht.dao"/> -->
<!--         <context:component-scan base-package="com.yht.service"/> -->
        <!-- 用户登录模块 -->
        <bean id="testAction" class="com.yht.action.TestAction">
            <property name="userService" >
                <ref bean="userService"/>
            </property>
        </bean>
        <bean id="userService" class="com.yht.service.UserServiceImpl">
            <property name="userDAO" >
                <ref bean="userDAO"/>
            </property>
        </bean>
        <bean id="userDAO" class="com.yht.dao.UserDAOImpl"></bean>
        <bean id="user" class="com.yht.entity.User"></bean>
        
</beans>




ACTION代码：




package com.yht.action;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionSupport;
import com.yht.entity.User;
import com.yht.service.UserService;

@Controller
public class TestAction extends ActionSupport{
    
    public TestAction() {
        System.out.println("————————————————————spring代为管理.");
    }
    
    private static final long serialVersionUID = 1L;

    @Autowired
    private String username;
    
    @Autowired
    private String password;
    
    /** 业务对象*/
    @Resource
    private UserService userService;
    
    
    
    public String login() {
        
        User user = new User();
        user.setUsername(this.username);
        user.setPassword(this.password);
        try {
            
            user = userService.getUser(user);
            
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        if(null != user) 
            return "success";
        return "error";
    }
}




service代码：




package com.yht.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.yht.dao.UserDAO;
import com.yht.entity.User;

@Service
public class UserServiceImpl implements UserService {
    
    /** 用户查询对象*/
    @Resource
    private UserDAO userDAO;
    
    /*
     * (non-Javadoc)
     * @see com.yht.service.UserService#getUser(com.yht.entity.User)
     */
    @Override
    public User getUser(User user) {
        
        return userDAO.getUser(user);
    }

}




dao代码：




package com.yht.dao;


import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Repository;

import com.yht.entity.User;
import com.yht.mapping.UserMapper;

@Repository
public class UserDAOImpl implements UserDAO {

    private UserMapper userMapper;
    
    @Override
    public User getUser(User user) {
        // 查询数据库数据
        if(StringUtils.isNotEmpty(user.getUsername()) && StringUtils.isNotEmpty(user.getPassword())) {
            user = userMapper.getUser(user.getUsername(),user.getPassword());
        }
        return null;
    }

}




applicationContext.xml配置：




<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.1.xsd
            http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">
            
        <!-- 加载数据库 -->
        <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
            <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
            <property name="url" value="jdbc:mysql://localhost/yhtdb?characterEncoding=utf-8"></property>
            <property name="username" value="liuw"></property>
            <property name="password" value="123456"></property>
        </bean>
        
        <!-- sessionFactory -->
        <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource">
                <ref bean="dataSource"/>
            </property>
            <property name="configLocation" value="classpath:mybatis-config.xml" />
        </bean>
        <!-- mapper扫描器 -->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.yht.mapping"></property>
            <property name="sqlSessionFactoryBeanName"  value="sessionFactory" />
        </bean>
        
        <!-- 事务管理 -->
        <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource">
                <ref bean="dataSource"/>
            </property>
        </bean>
        
        <!-- 自动注释 -->
        <tx:annotation-driven transaction-manager="txManager" />
        
        <import resource="classpath*:/applicationContext-user.xml"/>
        
</beans>




错误信息：




org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testAction' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Cannot resolve reference to bean 'userService' while setting bean property 'userService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1360)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:384)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1396)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
    ... 24 more
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1064)
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:924)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
    ... 32 more
三月 22, 2017 9:36:05 上午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testAction' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Cannot resolve reference to bean 'userService' while setting bean property 'userService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1360)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:384)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in URL [file:/F:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/spring/WEB-INF/classes/applicationContext-user.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1396)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
    ... 24 more
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'userDAO' of bean class [com.yht.service.UserServiceImpl]: Bean property 'userDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1064)
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:924)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
    ... 32 more




感觉哪都没错啊，就是找不到uerDAO这个bean怎么回事啊。

        

        

            
            

                
                    牛小伟的主页
                
                牛小伟
                |
                菜鸟二级
                |
                园豆：202

                提问于：2017-03-23 14:12
            

        

        

        

        
        
    







    
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                所有回答(2)
        

        

                

                    

                        
                        0
                        
                    

                    

                        


检查一下你mapper里面的映射文件吧
                        


                        

                            


    

    

    

        丶yangj
        |
        园豆：202
        (菜鸟二级)
        |
        2017-03-23 15:51

    




                        


                        

                        


                        
                    

                

                

                    

                        
                        0
                        
                    

                    

                        


给userDao加上getter setter试试
                        


                        

                            


    

    

    

        建波
        |
        园豆：202
        (菜鸟二级)
        |
        2017-04-07 14:57

    




                        


                        

                        


                        
                    

                

        







    
    




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