1-2 Spring 的基本使用

1.Spring容器的配置文件applicationContext.xml的引入

名称可以自己定义

<?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:jdbc="http://www.springframework.org/schema/jdbc"

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

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

xmlns:jpa="http://www.springframework.org/schema/data/jpa"

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

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

xsi:schemaLocation="

http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd

http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd

http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd

http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd

http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd

http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

</beans>

2.Spring的Bean实例属性指定值

<bean id="Cat" class ="com.dev.Cat" >

<property name="bird" value="jack"/>

</bean>

3.配置的注入和使用

ApplicationContext ac= new ClassPathXmlApplicationContext("/applicationContext.xml");

Cat cat = ac.getBean("Cat",Cat.class);

或者

Cat cat=(Cat)ac.getBean("Cat");

实体类中需要有get和set方法。否则无法注入属性值。