spring 依赖注入bean的属性

对于类成员变量，spring支持构造函数注入，属性setter方法注入

0. domain类

public class Student {private String name;private int age;public Student(){}public Student(String name,int age){this.name=name;this.age =age ;}public String getName() {return name;}public void setName(String name) {this.name = name;}@Overridepublic String toString() {return "Student [name=" + name + ", age=" + age + "]";}

1.使用构造方法注入 通过 constructor  标签注入

<bean id="student" class="com.zmf.domain.Student"><!-- index 属性 --><!--  <constructor-arg index="0" value="zmf"></constructor-arg><constructor-arg index="1" value="11"></constructor-arg> --><!-- type 属性 --><constructor-arg type="int" value="111"></constructor-arg><constructor-arg type="java.lang.String" value="xxxs"></constructor-arg></bean>

2.通过setter 方法注入

<bean id="student" class="com.zmf.domain.Student"><property name="name" value="zmf"></property><property name="age" value="111"></property></bean>

 -- 注入其他属性

 

public class Classroom {private Student student;public void setStudent(Student student){this.student = student;}

<bean id="classroom" class="com.zmf.domain.Classroom"><property name="student" ref="student"></property></bean>

List属性注入

<property name="list">   <list>    <value>aaa</value>    <value>bbb</value>  </list></property>

map属性注入

<property name=""><map><entry key="" value=""></entry><entry key="" value=""></entry></map></property>

set属性注入

<property name=""><set><value></value><value></value></set></property>

properties 注入

private Properties pro;

       <property name="pro"><props><prop key="name">zmf</prop><prop key="age">11</prop></props></property>