Spring.NET学习笔记8——集合类型的注入(基础篇)

1.基础类

 public class Happy
    {
        public override string ToString()
        {
            return "每天都开心，每天都有好心情";
        }
    }

    public class OneYear
    {
        public override string ToString()
        {
            return "快乐的一年";
        }
    }

    public class Person
    {

         //下面都是预注入的属性
        public IList<Person> BestFriends { get; set; }

        public IList HappyYears { get; set; }

        public IList<int> Years { get; set; }

        public IDictionary HappyDic { get; set; }

        public IDictionary<string,object> HappyTimes { get; set; }
    }

2.配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <configSections>
    <sectionGroup name="spring">
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core" />
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core" />
    </sectionGroup>
  </configSections>

  <spring>

    <context>
      <resource uri="config://spring/objects" />
    </context>

    <objects xmlns="http://www.springframework.net">

      <object id="person" type="SpringNetDi.Person, SpringNetDi">


        <!--空集合属性-->
        <property name="BestFriends">
          <null/>
        </property>
        
        <!--System.Collections.IList注入 -->
        <property name="HappyYears">
          <list>
            <value>1992</value>
            <value>1998 年</value>
            <ref object="oneYear"/>
          </list>
        </property>

        <!--System.Collections.IList<int>注入 -->
        <property name="Years">
          <list element-type="int">
            <value>1992</value>
            <value>1998</value>
            <value>2000</value>
          </list>
        </property>

        <!--System.Collections.IDictionary注入-->
        <property name="HappyDic">
          <dictionary key-type="string" value-type="object">
            <entry key="第一开心" value="每天都能睡一个好觉"/>
            <entry key="第二开心" value-ref="happy"/>
          </dictionary>
        </property>

        <!--System.Collections.IDictionary<object,object>注入-->
        <property name="HappyTimes">
          <dictionary key-type="string" value-type="object">
            <entry key="第一开心" value="每天都能睡一个好觉"/>
            <entry key="第二开心" value-ref="happy"/>
          </dictionary>
        </property>
        
      </object>

      <object id="oneYear" type="SpringNetDi.OneYear,SpringNetDi"/>

      <object id="happy" type="SpringNetDi.Happy,SpringNetDi"/>
      
    </objects>

  </spring>

</configuration>

3.调用

class Program
    {
        static void Main(string[] args)
        {
            IApplicationContext ctx = ContextRegistry.GetContext();

            Person person = ctx.GetObject("person") as Person;

            Console.WriteLine("空值");
            string bestFriend = person.BestFriends == null ? "我的朋友太多了" : "我只有一个好朋友";
            Console.WriteLine(bestFriend);
            Console.WriteLine();

            Console.WriteLine("IList");
            foreach (var item in person.HappyYears)
            {
                Console.WriteLine(item);
            }
            Console.WriteLine();

            Console.WriteLine("泛型Ilist<int>");
            foreach (int item in person.Years)
            {
                Console.WriteLine(item);
            }
            Console.WriteLine();

            Console.WriteLine("IDictionary");
            foreach (DictionaryEntry item in person.HappyDic)
            {
                Console.WriteLine(item.Key + " 是 " + item.Value);
            }
            Console.WriteLine();

            Console.WriteLine("泛型IDictionary<string,object>");
            foreach (KeyValuePair<string,object> item in person.HappyTimes)
            {
                Console.WriteLine(item.Key + " 是 " + item.Value);
            } 

            Console.ReadLine();
        }
    }

4.结果