Spring IOC配置问题

Posted 2023-02-16

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<constructor-arg ref="dataSource" />
</bean>
<bean id="userDao" class="com.qywz.dao.impl.UserDaoImpl">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
<bean id="userService" class="com.qywz.service.impl.UserServiceImpl">
<property name="userDao" ref="userDao" />
</bean>
这是我的配置，Service层是这样子写的：
private UserDao userDao;

public UserDao getDao()
return userDao;


public void setDao(UserDao userDao)
this.userDao = userDao;

报错：
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'userDao' of bean class [com.qywz.service.impl.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?
求大侠们解决下谢谢

参考技术A .java代码：
package ioc.first;

import ioc.first.service.StoreService;

import java.util.Map;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test

public static void main(String[] args)
// FileSystemResource("D:/a.txt");
// Resource resource=new ClassPathResource("ioc/first/applicationContext.xml");
// BeanFactory context=new XmlBeanFactory(resource);

ApplicationContext context=new ClassPathXmlApplicationContext("ioc/first/applicationContext_autowire.xml");
StoreService service=(StoreService)context.getBean("storeService") ;
service.submitOrder();

// Map env=(Map)context.getBean("env");
// System.out.println(env.get("JAVA_HOME"));
//
// System.out.println(context.getBean("env2"));




applicationContext_autowire.xml 代码：

<?xml version="1.0" encoding="UTF-8"?>
<beans default-autowire="byType"
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<bean id="itemDao" class="ioc.first.dao.ItemDaoImpl"/>
<bean id="orderDao" class="ioc.first.dao.OrderDaoImpl"/>
<bean id="oDao1" class="ioc.first.dao.OrderDaoImpl"/>

<bean id="storeService"
class="ioc.first.service.StoreServiceImpl"
autowire="autodetect">
</bean>

</beans>

上面java代码中的//后面是注释。可以不用管 是我用来做测试的.追问

谢谢你，你这是木有回答到问题所在！不过我已经解决了，还是非常感谢你！

参考技术B getUserDao
setUserDao注意方法名称。本回答被提问者采纳