spring.net （3）依赖注入基础2

如何调用其他对象的成员

　　接上文例子：

　　现在Person有一个属性 name 静态属性 eye 域 gender

public class Person
{
public string name { get; set; }
public static object eye { get; set; }
public string gender;
public Pet pet { get; set; }public object seefrisbee(object color)
{
return string.Format("{0}看到{1}追着{2}颜色的飞盘", name,pet.name,color);
}
~Person()
{
Console.WriteLine(name + "离开");
}
}

对属性赋值：

　　

<object id="person" type="SpringDemo.Person,SpringDemo" singleton="true" >
<property name="pet" ref="dog" ></property>
<property name="name" value="Yahue"></property>
<property name="gender" value="男"></property>
<property name="eye" value="忧郁的眼神"></property>
<listener event="frisbeefly" method="seefrisbee">
<ref object="dog"/>
</listener>
</object>

name

<object id="personname" type="Spring.Objects.Factory.Config.PropertyRetrievingFactoryObject, Spring.Core">
<property name="TargetObject" ref="person"></property>
<property name="TargetProperty" value="name"></property>
</object>

eye

<!--静态属性的调用-->
<object id="personeye" type="Spring.Objects.Factory.Config.PropertyRetrievingFactoryObject, Spring.Core">
<property name="StaticProperty" value="SpringDemo.Person.eye"></property>
</object>

gender

<object id="persongender" type="Spring.Objects.Factory.Config.FieldRetrievingFactoryObject, Spring.Core">
<property name="TargetObject" ref="person"/>
<property name="TargetField" value="gender"/>
</object>

执行：

　　　　　　 Console.WriteLine(ctx.GetObject("personname"));
Console.WriteLine(ctx.GetObject("persongender"));
Console.WriteLine(ctx.GetObject("personeye"));
Console.ReadLine();

输出结果：

　　

Yahue
男
拥有迷离而又忧郁的眼神

调用其他对象的方法：

Person有了静态say的方法：

　　

public class Person
{
public string name { get; set; }
public static object eye { get; set; }
public string gender;
public Pet pet { get; set; }
public static string say(string word1,string word2,string word3)
{
return string.Format("说：{0}-{1}-{2}", word1, word2, word3);
}

public object seefrisbee(object color)
{
return string.Format("{0}看到{1}追着{2}颜色的飞盘", name,pet.name,color);
}
~Person()
{
Console.WriteLine(name + "离开");
}
}

xml

<object id="personsay" type="Spring.Objects.Factory.Config.MethodInvokingFactoryObject, Spring.Core">
<property name="TargetType" value="SpringDemo.Person,SpringDemo"></property>
<property name="TargetMethod" value="say"></property>
<property name="Arguments">
<list>
<value>啊</value>
<value>大海啊</value>
<value>全是水</value>
</list>
</property>

</object>

Console.WriteLine(ctx.GetObject("personsay"));

输出：

说：啊-大海啊-全是水

现在有个非静态的say2方法：

public class Person
{
public string name { get; set; }
public static object eye { get; set; }
public string gender;
public Pet pet { get; set; }
public static string say(string word1,string word2,string word3)
{
return string.Format("说：{0}-{1}-{2}", word1, word2, word3);
}
public string say2(string word1, string word2, string word3)
{
return string.Format("说：{0}-{1}-{2}", word1, word2, word3);
}
public object seefrisbee(object color)
{
return string.Format("{0}看到{1}追着{2}颜色的飞盘", name,pet.name,color);
}
~Person()
{
Console.WriteLine(name + "离开");
}
}

<object id="personsay2" type="Spring.Objects.Factory.Config.MethodInvokingFactoryObject, Spring.Core">
<property name="TargetObject" ref="person"></property>
<property name="TargetMethod" value="say2"></property>
<property name="NamedArguments">
<dictionary>
<entry key="word1" value="啊！"></entry>
<entry key="word2" value="大海啊！"></entry>
<entry key="word3" value="全是水！"></entry>
</dictionary>
</property>
</object>

注意ref的值是待调用对象的实例

调用：

Console.WriteLine(ctx.GetObject("personsay2"));

执行结果：

说：啊！-大海啊！-全是水！

注意：方法参数的传递有两种方式：NamedArguments和Arguments 前者方法名和值是个键值，后者是个注入的参数顺序和方法的参数顺序对应的集合。