【Spring】c命名和p命名空间注入

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【Spring】c命名和p命名空间注入

p命名空间注入

导入p名称空间

xmlns:p=""

直接输入p就会有相关的属性弹出

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:p=""xmlns:xsi=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd"><bean id="user" class="org.example.User"  p:name="张三" p:age="20"></bean></beans>

package org.example;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class Test6 {public static void main(String[] args) {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");User user=(User) context.getBean("user");System.out.println(user);}
}

    User user=(User) context.getBean("user");

也可以这么写

 User user=context.getBean("user"，User.class);

c命名空间注入

xmlns:c=""

需要添加一个有参构造函数

通过构造器注入 

<bean id="user" class="org.example.User"  c:name="张三" c:age="20"></bean>

public class Test6 {public static void main(String[] args) {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");User user= context.getBean("user",User.class);System.out.println(user);}
}