05_集合对象注入

【工程截图】

【Some.java】

package com.HigginCui;

public class Some {
    private String name;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String toString() {
        return "some [name=" + name + "]";
    }
}

【SomeBean.java】

package com.HigginCui;
import java.util.List;
import java.util.Map;

public class SomeBean {
    private String[] someStrArray; //字符串数组
    private Some[] someObjArray;   //类数组
    private List someList;           //List集合
    private Map someMap;           //Map集合
    public String[] getSomeStrArray() {
        return someStrArray;
    }
    public void setSomeStrArray(String[] someStrArray) {
        this.someStrArray = someStrArray;
    }
    public Some[] getSomeObjArray() {
        return someObjArray;
    }
    public void setSomeObjArray(Some[] someObjArray) {
        this.someObjArray = someObjArray;
    }
    public List getSomeList() {
        return someList;
    }
    public void setSomeList(List someList) {
        this.someList = someList;
    }
    public Map getSomeMap() {
        return someMap;
    }
    public void setSomeMap(Map someMap) {
        this.someMap = someMap;
    }
}

【applicationContext.xml】

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:aop="http://www.springframework.org/schema/aop"
       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-2.5.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
    
    <bean id="some1" class="com.HigginCui.Some">
        <property name="name">
            <value>HigginCui</value>
        </property>
    </bean>
    
    <bean id="some2" class="com.HigginCui.Some">
        <property name="name">
            <value>Jack</value>
        </property>
    </bean>
    <!-- 
        1.对于数组或List类型的依赖注入，在编写定义文件时，用<list>标签，并使用<value>标签指定字符串
             或是使用<ref>标签来参考至其它的bean实例
        2.对于Map类型的依赖关系注入则是使用<map>标签，map必须指定key-value
             所以要用<entry>标签来指定<key>,然后使用<value>标签指定字符串
             或是使用<ref>来参考至其它的bean实例 
    -->
    <bean id="someBean" class="com.HigginCui.SomeBean">
        <!-- 字符串数组: String[] someStrArray;-->
        <property name="someStrArray">
            <list>
                <value>Hello</value>
                <value>world...</value>
            </list>
        </property>
        <!-- Some类数组:Some[] someObjArray; -->
        <property name="someObjArray">
            <list>
                <ref bean="some1"/>
                <ref bean="some2"/>
            </list>
        </property>
        <!-- List集合：List someList; -->
        <property name="someList">
            <list>
                <value>ListTest</value>
                <ref bean="some1"/>
                <ref bean="some2"/>
            </list>
        </property>
        <!-- Map集合：Map someMap; -->
        <property name="someMap">
            <map>
                <entry key="MapTest">
                    <value>Hello HigginCui!</value>
                </entry>
                <entry key="someKey1">
                    <ref bean="some1"/>
                </entry>
            </map>
        </property>
    </bean>
</beans>

【TestAll.java】

package com.HigginCui.test;

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

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.HigginCui.Some;
import com.HigginCui.SomeBean;

public class TestAll {
    @Test
    public void testSomeBean(){
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        SomeBean someBean=(SomeBean) context.getBean("someBean");
        //取得字符串数组类型依赖注入对象
        String[] strs=someBean.getSomeStrArray();
        for(int i=0;i<strs.length;i++){
            System.out.println("strs["+i+"]= "+strs[i]);
        }
        //取得Some类数组类型依赖注入对象
        Some[] somes=someBean.getSomeObjArray(); 
        for(int i=0;i<somes.length;i++){
            System.out.println("some["+i+"].name="+somes[i].getName());
        }
        //取得List类型依赖注入对象
        List someList=someBean.getSomeList();
        for(int i=0;i<someList.size();i++){
            System.out.println("someList.get("+i+")="+someList.get(i));
        }
        //取得Map类型依赖注入对象
        Map someMap=someBean.getSomeMap();
        System.out.println(someMap.get("MapTest"));
        System.out.println(someMap.get("someKey1"));
        
    }
}

【运行结果】

strs[0]= Hello
strs[1]= world...
some[0].name=HigginCui
some[1].name=Jack
someList.get(0)=ListTest
someList.get(1)=some [name=HigginCui]
someList.get(2)=some [name=Jack]
Hello HigginCui!
some [name=HigginCui]