Spring-级联赋值

一、级联赋值第一种方法
1.创建Emp类

package com.bean;

public class Emp {
    private String EName;
    private String gender;
    //员工属于某一个部门，使用对象形式表示
    private Dept dept;

    public void setDept(Dept dept) {
        this.dept = dept;
    }

    public Dept getDept() {
        return dept;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public void setEName(String EName) {
        this.EName = EName;
    }
    public void add(){
        System.out.println(EName+":"+gender+":"+dept);
    }
}

2.创建Dept类

package com.bean;

public class Dept {
    private String dName;

    public void setdName(String dName) {
        this.dName = dName;
    }

    @Override
    public String toString() {
        return "Dept{" +
                "dName='" + dName + '\'' +
                '}';
    }
}

3.配置bean3.xml文件

<?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">
       <!--***级联赋值第一种方法**** -->
    <bean name="emp" class="com.bean.Emp">
        <property name="EName" value="lucy"></property>
        <property name="gender" value="male"></property>
        <property name="dept" ref="dept"></property>
        <property name="dept.dName" value="安保"></property>
    </bean>
    <bean name="dept" class="com.bean.Dept"></bean>
</beans>

4.创建测试类

public class TestBean2 {
    @Test
   public void testUpdate(){
        //加载spring配置文件
        ApplicationContext context=new ClassPathXmlApplicationContext("bean3.xml");
        //获取配置创建的对象
        Emp service = context.getBean("emp", Emp.class);
        service.add();
    }

}

二、级联赋值的第二种方法

   		<!-- 级联赋值，类似于外部bean配置-->
   <bean id="emp" class="cn.zsp.spring5.bean.Emp">
        <property name="ename" value="zsp"></property>
        <property name="gender" value="男"></property>
        <property name="dept" ref="dept" ></property>
    </bean>
    <bean id="dept" class="cn.zsp.spring5.bean.Dept">
        <property name="dname" value="安保部"></property>
    </bean>