SSH与SSM学习之Spring08——Spring属性注入之复杂类型注入

SSH与SSM学习之Spring08——Spring属性注入之复杂类型注入

一、复杂类型注入说明

前面的注入解决大部分的问题。但是注入比如数组、集合等的操作是操作不了的。现在就看看这些复杂类型的注入。

比如 map list 数组 properties等

其实就是在响应的属性下 使用相应的标签

例如：

    <bean name="com2" class="com.qwm.spring1.bean.ComplexBean">
        <property name="arr">
            <array>
                <value>wimingvalue>
                <value>qiwenmingvalue>
                <value>xiaomingvalue>
            array>
        property>
        <property name="list">
            <list>
                <value>小明value>
                <value>小小明value>
                <value>小明明value>
            list>
        property>
        <property name="map">
            <map>
                <entry key="userName" value="wiming"/>
                <entry key="mycar" value-ref="car"/>
                <entry key-ref="car" value-ref="car"/>
            map>
        property>
        <property name="prop">
            <props>
                <prop key="p1">p11111prop>
                <prop key="p2">p22222prop>
                <prop key="p3">p33333prop>
            props>
        property>
    bean>

下面测试，使用到 ComplexBean和Car类。

---

二、Car类

package com.qwm.spring1.bean;
/**
 * @author: wiming
 * @date: 2017-09-27 14:59:50  星期三
 * @decription:
 */
public class Car {
    private String color;
    private String name;

    public String getColor() { return color; }
    public void setColor(String color) { this.color = color; }
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }

    @Override public String toString() { return "Car{color='" + color + '\'' + ", name='" + name + '\'' + '}'; }
}

---

三、ComplexBean类

package com.qwm.spring1.bean;
import java.io.Serializable;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Properties;

/**
 * @author: wiming
 * @date: 2017-09-27 16:10:40  星期三
 * @decription:
 * 用于测试复杂类型注入
 */
public class ComplexBean implements Serializable {
    private Object[] arr;
    private List list;//List/Set 一样的
    private Map map;
    private Properties prop;

    //get/set方法
    public Object[] getArr() { return arr; }
    public void setArr(Object[] arr) { this.arr = arr; }
    public List getList() { return list; }
    public void setList(List list) { this.list = list; }
    public Map getMap() { return map; }
    public void setMap(Map map) { this.map = map; }
    public Properties getProp() { return prop; }
    public void setProp(Properties prop) { this.prop = prop; }

    @Override
    public String toString() { return "ComplexBean{arr=" + Arrays.toString(arr) + ", list=" + list + ", map=" + map + ", prop=" + prop + '}'; }
}

---

四、数组、集合中只有一个元素测试

4.1 配置文件

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd ">

    
    <bean name="car" class="com.qwm.spring1.bean.Car">
        
        <property name="name" value="兰博基尼"/>
        <property name="color" value="红色"/>
    bean>

    
    <bean name="com1" class="com.qwm.spring1.bean.ComplexBean">
        
        <property name="arr" value="arr_one"/>
        <property name="list" value="list_one"/>
        <property name="map">
            <map>
                <entry key="userName" value="wiming"/>
                <entry key="mycar" value-ref="car"/>
                <entry key-ref="car" value-ref="car"/>
            map>
        property>
        <property name="prop">
            <props>
                <prop key="p1">p11111prop>
                <prop key="p2">p22222prop>
                <prop key="p3">p33333prop>
            props>
        property>
    bean>

beans>

---

4.2 测试代码

/**
 * 复杂类型注入
 * 其中 array 和list只有一个的情况
 */
@Test
public void test8(){
    ApplicationContext ac = new ClassPathXmlApplicationContext("com/qwm/spring1/c_inject/applicationContext.xml");
    ComplexBean com1 = (ComplexBean) ac.getBean("com1");
    System.out.println(com1);
}

---

4.3 运行结果

ComplexBean{arr=[arr_one], list=[list_one], map={userName=wiming, mycar=Car{color='红色', name='兰博基尼'}, Car{color='红色', name='兰博基尼'}=Car{color='红色', name='兰博基尼'}}, prop={p3=p33333, p2=p22222, p1=p11111}}

---

五、数组、集合中有多个个元素测试

5.1 配置文件

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd ">
    
    <bean name="car" class="com.qwm.spring1.bean.Car">
        
        <property name="name" value="兰博基尼"/>
        <property name="color" value="红色"/>
    bean>
    
    <bean name="com2" class="com.qwm.spring1.bean.ComplexBean">
        <property name="arr">
            <array>
                <value>wimingvalue>
                <value>qiwenmingvalue>
                <value>xiaomingvalue>
            array>
        property>
        <property name="list">
            <list>
                <value>小明value>
                <value>小小明value>
                <value>小明明value>
            list>
        property>
        <property name="map">
            <map>
                <entry key="userName" value="wiming"/>
                <entry key="mycar" value-ref="car"/>
                <entry key-ref="car" value-ref="car"/>
            map>
        property>
        <property name="prop">
            <props>
                <prop key="p1">p11111prop>
                <prop key="p2">p22222prop>
                <prop key="p3">p33333prop>
            props>
        property>
    bean>

beans>

---

5.2 测试代码

/**
 * 复杂类型注入
 * 其中 array 和list有多个的情况
 */
@Test
public void test9(){
    ApplicationContext ac = new ClassPathXmlApplicationContext("com/qwm/spring1/c_inject/applicationContext.xml");
    ComplexBean com2 = (ComplexBean) ac.getBean("com2");
    System.out.println(com2);
}

---

5.3 运行结果

ComplexBean{arr=[wiming, qiwenming, xiaoming], list=[小明, 小小明, 小明明], map={userName=wiming, mycar=Car{color='红色', name='兰博基尼'}, Car{color='红色', name='兰博基尼'}=Car{color='红色', name='兰博基尼'}}, prop={p3=p33333, p2=p22222, p1=p11111}}

---

六、源码下载

https://github.com/wimingxxx/spring01/tree/master/src/com/qwm/spring1/c_inject