spring 注解方式实现依赖注入

包: emat.liyy.action

package emat.liyy.action;

import java.util.List;

import javax.annotation.Resource;

import org.junit.Test;

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

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Component;

import org.springframework.stereotype.Controller;

import emat.liyy.dao.UserDao;

@Component @Scope("prototype")

public class Login {

private String username = "123";

private String password;

@Autowired(required=false)

private UserDao userdao;

private List list;

public List getList() {

return list;

}

public void setList(List list) {

this.list = list;

}

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;

}

@Test

public void save(){

this.userdao.save(username);

//System.out.println(username);

/*for(int i=0;i<list.size();i++){

System.out.println(list.get(0));

}*/

}

}

包: emat.liyy.dao

package emat.liyy.dao;

public interface UserDao {

public String save(String username);

}

包: emat.liyy.dao.impl

package emat.liyy.dao.impl;

import org.springframework.stereotype.Repository;

import org.springframework.stereotype.Service;

import emat.liyy.dao.UserDao;

@Repository

public class UserDaoImpl implements UserDao {

public String save(String username){

System.out.println(username);

return "123";

}

}

包: emat.liyy.test

package emat.liyy.test;

import javax.annotation.Resource;

import org.junit.Test;

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

import org.springframework.context.support.AbstractApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import emat.liyy.action.Login;

public class test {

@Test

public void tests(){

AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");

Login login = (Login)ctx.getBean("login");

login.save();

ctx.close();

}

}

application.cfg.xml

<?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"

xmlns:p="http://www.springframework.org/schema/p"

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="emat.liyy"></context:component-scan>

<!--

<bean id="userdao" class="emat.liyy.dao.impl.UserDaoImpl"></bean>

<bean id="login" class="emat.liyy.action.Login">

<property name="userdao" ref="userdao"></property>

<property name="username" value="liyy"></property>

<property name="list">

<list>

<value>value1</value>

<value>value2</value>

<value>value3</value>

</list>

</property>

</bean>

-->

</beans>