Spring框架笔记-IOC容器2

接上个笔记

https://blog.csdn.net/weixin_52003758/article/details/124214494

3、XML注入其他类型属性

1、字面量
(1)NULL值

	

(2)属性值包含特殊符号
	a.把<>进行转义<, >
	b.把带特殊符号内容写到CDATA里
	
        >]]>
    

2、注入属性-外部bean
	(1)创建两个类service类和dao类
	(2)在service调用dao里面的方法
	
	
		
		
	
	
3、注入属性-内部bean

4、注入集合类属性

// Course.java
package com.company;

public class Course {
    private String cname;

    public void setCname(String cname){
        this.cname = cname;
    }
}

//Stu.java
package com.company;

import java.util.List;
import java.util.Map;
import java.util.Set;

public class Stu {
    // 1、数组类型属性
    private  String[] courses;
    // 2、list集合类型属性
    private List<String> list;
    // 3、map集合类型属性
    private Map<String, String> maps;
    // 4、set集合类型属性
    private Set<String> sets;
    // 5、自定义类属性
    private List<Course> l_courses;

    public void setCourses(String[] courses){
        this.courses = courses;
    }
    public void setList(List<String> list){
        this.list = list;
    }
    public void setMaps(Map<String, String> maps){
        this.maps = maps;
    }
    public void setSets(Set<String> sets){
        this.sets = sets;
    }
    public void setL_courses(List<Course> l_courses) {
        this.l_courses = l_courses;
    }
}

// bean1.xml

<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">

    <bean id="stu" class="com.company.Stu">
        
        <property name="courses">
            <list>
                <value>java课程value>
                <value>数据库课程value>
            list>
        property>
        
        <property name="list">
            <list>
                <value>gujiavalue>
                <value>liujialevalue>
            list>
        property>
        
        <property name="maps">
            <map>
                <entry key="Java" value="java">entry>
                <entry key="PHP" value="php">entry>
            map>
        property>
        
        <property name="sets">
            <set>
                <value>Mysqlvalue>
                <value>Redisvalue>
            set>
        property>
        
        <property name="l_courses">
            <list>
                
                <ref bean="course1">ref>
                <ref bean="course2">ref>
            list>
        property>
    bean>
    
    <bean id="course1" class="com.company.Course">
        <property name="cname" value="Spring">property>
    bean>
    <bean id="course2" class="com.company.Course">
        <property name="cname" value="Vue">property>
    bean>
beans>