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>