春季3 @Component和静态工厂方法 [英] Spring 3 @Component and static factory method

问题描述

如果我在写一个静态的工厂方法来创建对象，我怎么使用@Component注释为该工厂类和指示（有一些注释）静态工厂方法，它应该被称为创造豆类类？以下是我的意思伪code：

  @Component
类MyStaticFactory
{
    @＆LT;有些注解＆GT;
    公共静态为MyObject的getObject（）
    {
        // code创建/返回实例
    }
}
 

解决方案

恐怕你不能做到这一点目前。然而，它是pretty简单的Java配置：

  @Configuration
公共类CONF {    @豆
    公众为MyObject myObject的（）{
        返回MyStaticFactory.getObject（）
    }}
 

在这种情况下， MyStaticFactory 不需要任何Spring注解。当然，你可以用好醇'XML来代替。

If I'm writing a static factory method to create objects, how do I use the '@Component' annotation for that factory class and indicate (with some annotation) the static factory method which should be called to create beans of that class? Following is the pseudo-code of what I mean:

@Component
class MyStaticFactory
{
    @<some-annotation>
    public static MyObject getObject()
    {
        // code to create/return the instance
    }
}

解决方案

I am afraid you can't do this currently. However it is pretty simple with Java Configuration:

@Configuration
public class Conf {

    @Bean
    public MyObject myObject() {
        return MyStaticFactory.getObject()
    }

}

In this case MyStaticFactory does not require any Spring annotations. And of course you can use good ol' XML instead.

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