承接上文
ObjectFactory与IFactoryObject的杂谈
.net篇（环境为vs2012+Spring.Core.dll v1.31）
public class parent {
public string Name { get; set; }
public int Age { get; set; }
}
public class CustomFactory :
Spring.Objects.Factory.IFactoryObject
{
public object GetObject(){
return "1";
}
public bool IsSingleton{
get { return false; }
}
public Type ObjectType{
get { return typeof(string); }
}
}<object id="p1" type="SpringBase.parent,SpringBase">
<property name="Name" value="cnljli" />
<property name="Age" value="1"/>
</object>
<object id="p2" type="SpringBase.parent,SpringBase" singleton="false" >
<property name="Name" value="cnljli" />
<property name="Age" value="1"/>
</object>
<object id="customFac" type="SpringBase.CustomFactory, SpringBase"/>
- 可以直接调用xml配置文件来返回一个工厂
Spring.Core.IO.IResource input = new Spring.Core.IO.FileSystemResource("factory.xml");
Spring.Objects.Factory.Xml.XmlObjectFactory factory =
new Spring.Objects.Factory.Xml.XmlObjectFactory(input);- 可以通过xml文件里面的配置为程序的实例注入,
第一个参数为实例的引用地址,第二个参数为xml文件的idparent ioc = new parent();
factory.ConfigureObject(ioc, "p1");
java篇（环境为Maven+Jdk1.7+IntelliJ IDEA 12.1.4）
package springdemo;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.*;
public class Parent {
private String name;
private Integer age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
class CustomFactory implements FactoryBean<String>{
@Override
public String getObject() throws Exception {
return "1";
}
@Override
public Class<?> getObjectType() {
return String.class;
}
@Override
public boolean isSingleton() {
return false;
}
}<bean id="p1" class="springdemo.Parent">
<property name="name" value="cnljli-p1" />
<property name="age" value="1" />
</bean>
<bean id="p2" class="springdemo.Parent" singleton="false">
<property name="name" value="cnljli-p2" />
<property name="age" value="1" />
</bean>
<bean id="customFac" class="springdemo.CustomFactory" />
java和Csharp的共同点
- 如果没有显式指定，对象的布署模式默认为singleton,即当修改一个实例化,再次通过id获取,
为修改后的实例- 实现IFactoryObject|FactoryBean接口的对象也可以获取这个工厂
不一定是这个工厂创建的实例,通过在id前面加上&符号