了解Spring 组件扫描

public class User {
private int id;
private String username;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- 启用注解注入 -->
<context:annotation-config/>
<!-- 启用组件扫描 -->
<context:component-scan base-package="cn.com.xalead"/>
</beans>

import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import cn.com.xalead.spring.service.UserService;

@Controller("uAction")
//@Scope("prototype")
public class UserAction{
@Resource(name="userService")
private UserService userService;

public String execute(){
System.out.println("Action执行");
userService.service();
return "success";
}
}

import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import cn.com.xalead.spring.User;
import cn.com.xalead.spring.manager.UserManager;
@Service("userService")
public class UserService {
@Resource(name="userManager")
private UserManager userManager;
public void service(){
System.out.println("执行Service");
userManager.add(new User());
}
}

@Repository("userManager")
public class UserManager {
public void add(User user){
System.out.println("执行User add!");
}
}

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.com.xalead.spring.controller.UserAction;

public class MainClass {
public static void main(String[] args) {
BeanFactory factory = new ClassPathXmlApplicationContext("app*.xml");
UserAction ua = (UserAction)factory.getBean("uAction");
ua.execute();
}
}

Action执行
执行Service
执行User add!