Spring c命名空间和p命名空间注入

c命名空间和p命名空间不能直接使用，需要在bean的xml文件中导入xml约束。

实体类(User)

package com.harris.pojo;

public class User {
    private  String name;
    private int age;

    public User(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public User() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

1.c命名空间注入

c: constructor-arg

构造器注入，类中要写有参构造

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


<bean id="user1"  class="com.harris.pojo.User" c:name="Herio" c:age="18"/>

2.p命名空间注入

p: property

要有无参构造。

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


<bean id="user" class="com.harris.pojo.User" p:name="Harris" p:age="19"/>

测试Test类

import com.harris.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
     public void Test1(){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        User user = context.getBean("user",User.class);
        System.out.println(user.toString());
    }
        @Test
     public  void Test2(){
         ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
         User user = context.getBean("user1",User.class);
         System.out.println(user.toString());
     }
}

结果

Spring c命名空间和p命名空间注入_xml
Spring c命名空间和p命名空间注入_xml_02