Spring入门---示例四----集合与数组类型注入【第一天】

通过示例三及后面的构造函数注入，知道了简单的注入方法，下面是集合与数组类型注入的示例。

1、编写数组集合的Bean类：

package test3.ioc;

import java.util.List;

import java.util.Map;

import java.util.Set;

public class Bean {

private String arr[];

@SuppressWarnings("rawtypes")

private List list;

@SuppressWarnings("rawtypes")

private Map map;

@SuppressWarnings("rawtypes")

private Set set;

public String[] getArr() {

return arr;

}

public void setArr(String arr[]) {

this.arr = arr;

}

@SuppressWarnings("rawtypes")

public List getList() {

return list;

}

@SuppressWarnings("rawtypes")

public void setList(List list) {

this.list = list;

}

@SuppressWarnings("rawtypes")

public Map getMap() {

return map;

}

@SuppressWarnings("rawtypes")

public void setMap(Map map) {

this.map = map;

}

@SuppressWarnings("rawtypes")

public Set getSet() {

return set;

}

@SuppressWarnings("rawtypes")

public void setSet(Set set) {

this.set = set;

}

}

2、配置applicationContext.xml:

 <!-- 配置集合与数组类型注入初始值 -->

 <bean id="bean" class="test3.ioc.Bean">

    <!-- 数组属性注入值 -->

    <property name="arr">

       <value>c++,java,vb.net</value>

    </property>

    <!-- list集合属性注入值 -->

    <property name="list">

       <list>

        <value>zhang</value>

        <value>wang</value>

        <value>lisi</value>

       </list>

    </property>

    <!-- set集合属性注入值 -->

    <property name="set">

      <set>

        <value>zhou---set</value>

        <value>wang---set</value>

        <value>lisi---set</value>

      </set>

    </property>

    <!-- map属性注入值 -->

    <property name="map">

      <map>

        <entry key="key1" value="zhang value1"></entry>

        <entry key="key2" value="wang value2"></entry>

        <entry key="key3" value="lisi value3"></entry>

      </map>

    </property>

 </bean>

3、测试:

package test3;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import test3.ioc.Bean;

public class Test2 {

public static void main(String[] args) {

BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");

Bean bean = (Bean)factory.getBean("bean");

Set set = bean.getSet();

Iterator it = set.iterator();

while (it.hasNext()) {

String s = (String)it.next();

System.out.println(s);

}

Map map = bean.getMap();

Set set1 = map.keySet();

Iterator it1 = set1.iterator();

while (it1.hasNext()) {

String key = (String)it1.next();

String value = (String)map.get(key);

System.out.println("key="+key+"value="+value);

}

}

}

注意：applicationContext.xml的配置请看前面入门内容及示例进行参考。