春季自动接线不适用于非春季托管类 [英] spring autowiring not working from a non-spring managed class

问题描述

我有一个通过调用构造函数实例化的类(Class ABC).反过来，ABC类具有使用自动连线注入的辅助类(XYZ类).

I have a class (Class ABC) that's instantiated by calling the constructor. Class ABC in turn has a helper class (Class XYZ) injected using auto-wired.

我们是基于Spring MVC的应用程序，在服务器启动时我看不到任何异常.

Ours is a Spring MVC based application and I don't see any exception while server start-up.

但是我仍然看到XYZ类为空.是因为Spring容器未实例化ABC类吗?

But I still see Class XYZ coming as null. Is it because of the fact that Class ABC is not instantiated by Spring Container?

在这种情况下，如何使用自动接线?

In such scenarios, how do i make use of auto-wiring?

谢谢.

推荐答案

您可以使用这种方式在非spring bean类中使用spring bean

You can use this way to use spring bean in non-spring bean class

    public class ApplicationContextUtils implements ApplicationContextAware {

  private static ApplicationContext ctx;

  @Override
  public void setApplicationContext(ApplicationContext appContext)
      throws BeansException {
    ctx = appContext;

  }

  public static ApplicationContext getApplicationContext() {
    return ctx;
  }
}

现在您可以通过此方法的getApplicationContext()获取applicationcontext对象.

now you can get the applicationcontext object by getApplicationContext() this method.

从applicationcontext中，您可以像这样获得spring bean对象:

from applicationcontext you can get spring bean objects like this:

 ApplicationContext appCtx = ApplicationContextUtils
    .getApplicationContext();
String strFromContext = (String) appCtx.getBean(beanName);

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