spring属性的注入实例

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spring框架核心jar包：
这里写图片描述
在工作目录下建立spring配置文件：

setter注入

<?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:jee="http://www.springframework.org/schema/jee" xmlns:aop="http://www.springframework.org/schema/aop"    xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd                http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd                http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-3.1.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">    //定义一个bean，它名字叫P1,class后为实现类，属性name设置为micro，为非单例模式    <bean id="P1" class="micro.Person" destroy-method="close" scope = "prototype">        <property name="name" value = "micro" />    </bean></beans>

创建实体类Person：

package micro;/**@author:micro_hz2015年8月11日 */public class Person {    String name;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

测试代码：

package micro;import org.apache.catalina.core.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/**@author:micro_hz2015年8月11日 */public class Test {    public static void main(String args[])    {    //加载配置文件        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("Spring.xml");        //工厂模式得到该实例        Person p = (Person) context.getBean("P1");        System.out.println(p.getName());            }}

运行结果：

micro

构造注入：
spring.xml文件修改为：

<bean id="P1" class="micro.Person" destroy-method="close" scope = "prototype">        <constructor-arg value = "master"></constructor-arg>    </bean>

实体类Person添加构造方法：

public class Person {    String name;    public Person(String name) {        this.name = name;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

测试：

public class Test {    public static void main(String args[])    {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("Spring.xml");        Person p = (Person) context.getBean("P1");        System.out.println(p.getName());            }}

输出：

master

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