Simple Spring，对于独立应用使用ClasspathApplicationContext，如何重用？ [英] Simple Spring, use of ClasspathApplicationContext for standalone apps, how to reuse?

问题描述

如果我有一个独立的主应用程序。说20类。他们可能需要随时与spring配置（ApplicationContext）定义的bean接口。我将在主应用程序入口点引导类路径应用程序上下文。但是如何重用已经实例化的bean？

例如，看起来像一个糟糕的方法来设置ClasspathApplicationContext作为单例，但这将是一个想法。 / p>

我以为我看过一个GlobalContextLocator或者沿着这些行的东西，但没有看到如何使用它的例子。

解决方案

有很多方法可以做到。您最好的参考资料位于：

http://static.springframework.org/spring/docs/2.5.x/reference/beans.html#context-introduction

，你需要查看的特定类是SingletonBeanFactoryLocator和ContextSingletonBeanFactoryLocator。

如果您使用SingletonBeanFactoryLocator，您可以使用以下方式查找bean：

  BeanFactoryLocator bfl = SingletonBeanFactoryLocator.getInstance（）; 
 BeanFactoryReference bf = bfl.useBeanFactory（com.mycompany.myapp）; 
 MyClass zed = bf.getFactory（）。getBean（mybean）; 
  

在Javadocs中有一个很好的解释：

http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/beans/factory/access/SingletonBeanFactoryLocator.html

此外，为了清楚起见，请确保配置文件在您的应用程序的类路径中，否则查找将失败。

If I have a standalone main application. Say 20 classes. They all may need to interface with the beans defined by the spring configuration (ApplicationContext) at any time. I would bootstrap the classpath application context at the main application entry point. But how do you reuse the already instantiated beans?

For example, it seems like a bad approach to setup the ClasspathApplicationContext as a singleton, but that would be the idea.

I thought I had seen a GlobalContextLocator or something along those lines but didn't seen an example on how to use it.

解决方案

There are a number of ways to do it. Your best reference is here:

http://static.springframework.org/spring/docs/2.5.x/reference/beans.html#context-introduction

and the specific classes you need to look at are SingletonBeanFactoryLocator and ContextSingletonBeanFactoryLocator.

If you use the SingletonBeanFactoryLocator you can use the following to look up beans:

BeanFactoryLocator bfl = SingletonBeanFactoryLocator.getInstance();
BeanFactoryReference bf = bfl.useBeanFactory("com.mycompany.myapp");
MyClass zed = bf.getFactory().getBean("mybean");

There is a very good explanation of this in detail in the Javadocs:

http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/beans/factory/access/SingletonBeanFactoryLocator.html

Also, just to be clear, make sure that the config file is in your classpath for your application, otherwise the lookup will fail.

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