Spring Bean 命名空间

1. 介绍

  通过命名空间为bean赋值，简化配置文件中属性声明的写法

2. 导入命名空间

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

<?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:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

3. 添加配置

 <!--命名空间-->
    <bean id="person8" class="com.cmz.bean.Person" p:id="5" p:name="王五" p:age="25" p:gender="男" p:date="2020/02/28"></bean>

4. 示例

ioc5.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:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!--命名空间-->
    <bean id="person" class="com.cmz.bean.Person" p:id="5" p:name="王五" p:age="25" p:gender="男" p:date="2020/02/28"></bean>
</beans>

MyTest5.class

import com.cmz.bean.Person;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author summer
 * @create 2020-02-22 23:45
 */
public class MyTest5 {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("ioc5.xml");
        Person person = context.getBean("person", Person.class);
        System.out.println(person);
    }
}

输出

Person{id=5, name='王五', age=25, gender='男', date=Fri Feb 28 00:00:00 CST 2020}