要想检测这些类并注册相应的bean,需要在xml中包含以下元素,其中basePackage是两个类的公共父包
先看beans.xml的配置(<context:component-scan base-package="com.lbx" />
)
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd"> <context:annotation-config /> <context:component-scan base-package="com.lbx" /> </beans>
要注册的<bean>
package com.lbx.service.impl;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import com.lbx.dao.UserDao;
import com.lbx.po.User;
import com.lbx.service.UserService;
@Component("userService")
public class UserServiceImpl implements UserService {
private UserDao userDao;
public void init(){
System.out.println("UserServiceImpl.init()");
}
@Override
public void add(User user) {
userDao.add(user);
}
public UserDao getUserDao() {
return userDao;
}
@Resource//(name="userDao") //最好用@Resource 不要用@Autowired
public void setUserDao( UserDao userDao) {
this.userDao = userDao;
}
public void destroy(){
System.out.println("UserServiceImpl.destroy()");
}
}