Ⅶ.spring的点点滴滴--自定义对象行为

承接上文

自定义对象行为

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.net篇（环境为vs2012+Spring.Core.dll v1.31）

  public class lifeCycle :
        Spring.Objects.Factory.IInitializingObject, 
        System.IDisposable,
        Spring.Objects.Factory.IObjectFactoryAware,
        Spring.Objects.Factory.IObjectNameAware
    {
        public Spring.Objects.Factory.IObjectFactory OFactory { get; set; }
        public String Name { get; set; }
        public void initMethod(){}
        public void destroyMethod() {}
        public void AfterPropertiesSet(){
            initMethod();
        }
        public void Dispose(){
            destroyMethod();
        }
        public Spring.Objects.Factory.IObjectFactory ObjectFactory{
            set { OFactory = value; }
        }
        public string ObjectName{
            set { Name = value; }
        }
    }
    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="lifeCycle" 
    type="SpringBase.lifeCycle, SpringBase" 
    init-method="initMethod" 
    destroy-method="destroyMethod" />
<object id="customFac" type="SpringBase.CustomFactory, SpringBase"/>

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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 LifeCycle implements
        InitializingBean,
        DisposableBean,
        BeanFactoryAware, BeanNameAware {
    private BeanFactory oFactory;
    private String name;
    public void initMethod(){}
    public void destroyMethod() {}
    @Override
    public void afterPropertiesSet() throws Exception {
        initMethod();
    }
    @Override
    public void destroy() throws Exception {
        destroyMethod();
    }
    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        oFactory=beanFactory;
    }
    @Override
    public void setBeanName(String name) {
        this.name=name;
    }
    public String getName() {
        return name;
    }
    public BeanFactory getoFactory() {
        return oFactory;
    }
}
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="lifeCycle" class="springdemo.LifeCycle"
          init-method="initMethod"
          destroy-method="destroyMethod" />
    <bean id="customFac" class="springdemo.CustomFactory" />

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java和Csharp的共同点

1. IObjectFactoryAware|BeanFactoryAware以及IObjectNameAware|BeanNameAware 实现的接口的属性或者方法会在容器初始化完成后spring自动调用赋值,只要更改方法体即可
2. IInitializingObject|InitializingBean接口的AfterPropertiesSet方法 在属性赋值完成后调用,也可以用init-method节点来和spring框架解耦
3. IDisposable|DisposableBean接口的destroy方法在对象释放的时候调用, 也可以用destroy-method节点来和spring框架解耦
4. IFactoryObject|FactoryBean为创建一个工厂类, 通过id调用Ioc容器的时候返回的是getObject方法的返回值不是工厂类, 前一章节的获取对象的属性就是继承了这个接口,isSingleton返回这个对象是不是单例, ObjectType|getObjectType返回对象类型
5. IObjectFactoryAware|BeanFactoryAware获取当前Ioc的容器
6. IObjectNameAware|BeanNameAware获取对象在容器里面的名称

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