属性赋值-字面量和ref
spring管理对象时，可以使用
1.字面量
…..
2.外部已声明的bean引用其他的bean(使用ref属性)
3.内部bean
4.集合属性赋值（list/array/set）
示例：
1.项目目录
2.Student.java
package com.atguigu.spring.di;
public class Student {
private Integer id;
private String name;
private Integer age;
private String sex;
private Double score;
private Teacher teacher;
public Teacher getTeacher() {
return teacher;
}
public void setTeacher(Teacher teacher) {
this.teacher = teacher;
}
public Double getScore() {
return score;
}
public void setScore(Double score) {
this.score = score;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "Student [id=" + id + ", name=" + name + ", age=" + age + ", sex=" + sex + ", score=" + score
+ ", teacher=" + teacher + "]";
}
public Student() {
super();
// TODO Auto-generated constructor stub
}
public Student(Integer id, String name, Integer age, String sex) {
super();
this.id = id;
this.name = name;
this.age = age;
this.sex = sex;
}
public Student(Integer id, String name, Double score, String sex){
this.id = id;
this.name = name;
this.score = score;
this.sex = sex;
}
}
3.Teacher.java
package com.atguigu.spring.di;
import java.util.List;
import java.util.Map;
public class Teacher {
private Integer tid;
private String tname;
private List<String> cls;
private List<Student> students;
private Map<String, String> bossMap;
public Map<String, String> getBossMap() {
return bossMap;
}
public void setBossMap(Map<String, String> bossMap) {
this.bossMap = bossMap;
}
public List<Student> getStudents() {
return students;
}
public void setStudents(List<Student> students) {
this.students = students;
}
public List<String> getCls() {
return cls;
}
public void setCls(List<String> cls) {
this.cls = cls;
}
public Integer getTid() {
return tid;
}
public void setTid(Integer tid) {
this.tid = tid;
}
public String getTname() {
return tname;
}
public void setTname(String tname) {
this.tname = tname;
}
@Override
public String toString() {
return "Teacher [tid=" + tid + ", tname=" + tname + ", cls=" + cls + ", students=" + students + ", bossMap="
+ bossMap + "]";
}
}
5.beans-di.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<bean id="s1" class="com.atguigu.spring.di.Student">
<!-- 通过set方法注入 -->
<property name="id" value="10010"></property>
<!--
<property name="id">
<value>10010</value>
</property>
-->
<property name="name" value="张三"></property>
<property name="age" value="23"></property>
<property name="sex" value="男"></property>
</bean>
<bean id="s2" class="com.atguigu.spring.di.Student">
<!-- 通过构造方法注入 -->
<constructor-arg value="10086"></constructor-arg>
<constructor-arg value="李四"></constructor-arg>
<constructor-arg value="24"></constructor-arg>
<constructor-arg value="女"></constructor-arg>
</bean>
<bean id="s3" class="com.atguigu.spring.di.Student">
<!-- 通过构造方法注入 -->
<constructor-arg value="10022"></constructor-arg>
<constructor-arg value="王五"></constructor-arg>
<constructor-arg value="90" index="2" type="java.lang.Double"></constructor-arg>
<constructor-arg value="女"></constructor-arg>
</bean>
<!-- Namespaces勾选p（beans标签会增加内容xmlns:p="http://www.springframework.org/schema/p"） -->
<bean id="s4" class="com.atguigu.spring.di.Student" p:id="10033" p:name="赵六" p:age="26" p:sex="男" p:teacher-ref="teacher"></bean>
<!-- 给bean的级联属性赋值 -->
<bean id="s5" class="com.atguigu.spring.di.Student">
<property name="id" value="10055"></property>
<property name="name" value="张三三"></property>
<property name="age" value="23"></property>
<property name="sex" value="男"></property>
<property name="teacher" ref="teacher"></property>
<!-- 级联测试 给bean的级联属性赋值-->
<property name="teacher.tname" value="小红"></property>
</bean>
<!-- 外部已声明的bean、引用其他的bean -->
<bean id="teacher" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="10000"></property>
<property name="tname" value="小明"></property>
</bean>
<!-- 内部bean -->
<bean id="s6" class="com.atguigu.spring.di.Student">
<property name="id" value="10066"></property>
<property name="name" value="崔八"></property>
<property name="age" value="18"></property>
<property name="sex" value="男"></property>
<property name="teacher">
<bean id="tt" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="2222"></property>
<property name="tname" value="admin"></property>
</bean>
</property>
</bean>
<!-- 定义在某个bean内部的bean，只能在当前bean中使用 -->
<!--
<bean id="s7" class="com.atguigu.spring.di.Student">
<property name="id" value="10066"></property>
<property name="name" value="崔八"></property>
<property name="age" value="18"></property>
<property name="sex" value="男"></property>
<property name="teacher" ref="tt">
</property>
</bean>
-->
<!-- list属性赋值1 -->
<bean id="t1" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="0000"></property>
<property name="tname" value="佟老师"></property>
<property name="cls">
<list>
<value>A</value>
<value>B</value>
<value>C</value>
</list>
</property>
</bean>
<!-- list属性赋值2 -->
<bean id="t2" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="10002"></property>
<property name="tname" value="婷姐"></property>
<property name="students">
<list>
<ref bean="s1"/>
<ref bean="s2"/>
<ref bean="s3"/>
</list>
</property>
</bean>
<!-- array属性赋值 -->
<!-- set属性赋值 -->
<!-- map属性赋值 -->
<bean id="t3" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="10003"></property>
<property name="tname" value="admin"></property>
<property name="bossMap">
<map>
<entry>
<key>
<value>10001</value>
</key>
<value>佟老师</value>
</entry>
<entry>
<key>
<value>10002</value>
</key>
<value>陈老师</value>
</entry>
</map>
</property>
</bean>
<bean id="t4" class="com.atguigu.spring.di.Teacher">
<property name="tid" value="10004"></property>
<property name="tname" value="root"></property>
<property name="students" ref="students"></property>
</bean>
<util:list id="students">
<ref bean="s4"/>
<ref bean="s5"/>
<ref bean="s6"/>
</util:list>
<util:map id="map">
<entry>
<key>
<value>1</value>
</key>
<value>张三</value>
</entry>
</util:map>
</beans>
6.Test.java
package com.atguigu.spring.di;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("beans-di.xml");
Student s1 = ac.getBean("s1", Student.class);
Student s2 = ac.getBean("s2", Student.class);
Student s3 = ac.getBean("s3", Student.class);
Student s4 = ac.getBean("s4", Student.class);
Student s5 = ac.getBean("s5", Student.class);
Student s6 = ac.getBean("s6", Student.class);
Teacher t1 = ac.getBean("t1", Teacher.class);
Teacher t2 = ac.getBean("t2", Teacher.class);
Teacher t3 = ac.getBean("t3", Teacher.class);
Teacher t4 = ac.getBean("t4", Teacher.class);
System.out.println(s1);
System.out.println(s2);
System.out.println(s3);
System.out.println(s4);
System.out.println(s5);
System.out.println(s6);
System.out.println(t1);
System.out.println(t2);
System.out.println(t3);
System.out.println(t4);
}
}