spring报错

Question

今天spring报错呀，请看以下报错，org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'orderDetailsService' defined in ServletContext resource [/WEB-INF/applicationContext_service.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'orderDAO' of bean class [wteam.service.ordManageService.OrderDetailsService]: Bean property 'orderDAO' 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$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
这是我的xml文件的配置：
<bean name="orderDAO" class="wteam.dao.ordManageDAO.OrderDAO">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean name="orderDetailsDAO" class="wteam.dao.ordManageDAO.OrderDetailsDAO">
<property name="sessionFactory" ref="sessionFactory"/>
</bean><bean name="orderDetailsService" class="wteam.service.ordManageService.OrderDetailsService">
<property name="orderDetailsDAO" ref="orderDetailsDAO"/>
<property name="orderDAO" ref="orderDAO"/>
</bean>
java代码那部分：private OrderDAOItf orderDAO;public OrderDAOItf getorderDAO() {
return orderDAO;
} public void setOrderDAO(OrderDAOItf orderDAO) {
this.orderDAO = orderDAO;
}感觉我的set和get没问题呀，大家能看出哪里有问题吗SpringJava

Answer 1

不好意思，有个方法粘贴错：getorderDAO()，应该是：getOrderDAO()的，还是会报错的，

Answer 2

Bean property 'orderDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?大概是你的set和get有问题呀，，类型不匹配

Answer 3

private OrderDAOItf orderDAO;
OrderDAOItf 这个类型。。Itf是打错了么？

Answer 4

没错呀，这是个dao的接口，为什么你会认为会可能是打错了呢，大神求解

Answer 5

可是你配置文件里这样定义的：<bean name="orderDAO" class="wteam.dao.ordManageDAO.OrderDAO">
OrderDAO和OrderDAOItf 不一样吧？

Answer 6

http://blog.sina.com.cn/s/blog_6fd8a5870100uq5f.html
应该是不规范导致的吧，，我没有写过DAO全部大写

Answer 7

这是因为OrderDAO实现接口OrderDAOItf ，然后我service类那里写接口是没错的吧

Answer 8

这是因为OrderDAO实现接口OrderDAOItf ，然后我service类那里写接口是没错的吧
对，你这样用没问题。。
要不你属性orderDAO换个名字，都小写，然后自动生成getter和setter，在重新部署下工程试试？

Answer 9

我猜是"wteam.dao.ordManageDAO.OrderDAO"类没有实现OrderDAOltf接口

Answer 10

另外bean定义时，建议使用id：<bean id="orderDetailsDAO"...

Answer 11

set get注入的依据不是你是否定义了这个变量，而看你是否有这个变量的set和get方法。
private OrderDAOItf orderDAO;public OrderDAOItf getorderDAO() {
return orderDAO;
}public void setOrderDAO(OrderDAOItf orderDAO) {
this.orderDAO = orderDAO;
}<bean name="orderDetailsService" class="wteam.service.ordManageService.OrderDetailsService">
<property name="orderDetailsDAO" ref="orderDetailsDAO"/>
<property name="orderDAO" ref="orderDAO"/>
</bean>你bean里这样定义，他默认会去找setOrderDAO和getOrderDAO找不到，就说你没有为这个属性提供set和get方法了。