applicationContext.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!-- 属性注入 --> <bean id="userHello" class="com.shuoeasy.test.User"> <property name="name" value="老鹰开灰机"></property> </bean> <!-- 构造注入 --> <bean id="seller" class="com.shuoeasy.test.Seller"> <constructor-arg type="String" value="我是商家"></constructor-arg> <constructor-arg type="double" value="5000"></constructor-arg> <constructor-arg type="boolean" value="false"></constructor-arg> </bean> <bean id="seller2" class="com.shuoeasy.test.Seller"> <constructor-arg type="String" > <value><![CDATA[我是含有非法字符串的<数据]]></value> </constructor-arg> <constructor-arg type="double" value="5000"></constructor-arg> </bean> </beans>
User.class:
package com.shuoeasy.test; public class User { private String name; public void setName(String name){ this.name = name; } public void hello(){ System.out.println("你好:" + this.name); } }
Seller.class:
package com.shuoeasy.test; public class Seller { private String name; private double money; private boolean sex; public Seller(String name, double money){ this.name = name; this.money = money; } public Seller(String name, double money, boolean sex) { super(); this.name = name; this.money = money; this.sex = sex; } @Override public String toString() { return "Seller [name=" + name + ", money=" + money + ", sex=" + sex + "]"; } }
Main.class
package com.shuoeasy.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { public static void main(String[] args) { /*属性注入*/ // 1.创建Spring的IOC容器对象 ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); // 2.从IOC容器中获取Bean实例 // 利用id定位到IOC容器 User user = (User) ctx.getBean("userHello"); // User user = ctx.getBean(User.class); // 不建议使用 // 3.调用 user.hello(); /*构造注入*/ Seller seller = (Seller) ctx.getBean("seller"); System.out.println(seller); Seller seller2 = (Seller) ctx.getBean("seller2"); System.out.println(seller2); } }
输出:
你好:老鹰开灰机
Seller [name=我是商家, money=5000.0, sex=false]
Seller [name=我是含有非法字符串的<数据, money=5000.0, sex=false]