Spring 2.5托管servlet：如何？ [英] Spring 2.5 managed servlets: howto?
问题描述
如果有任何错误，请纠正我。
据我了解，所有Spring功能，即通过装豆的DI都可以工作。 b $ b
Spring Context，即getBean（）方法。
否则，即使我的方法标记为@Transactional，也无法正常工作，我将
使用新的运算符创建拥有类，将不提供任何交易管理。
我将Tomcat 6用作servlet容器。
所以，我的问题是：如何使Spring框架管理Servlet方法。
这里的问题是我使用了一个框架，它的servlet扩展了
基本java Servlets的功能，因此他们有更多方法。尽管如此，web.xml仍然像往常一样存在于应用程序中。
问题是我不控制servlet的创建流程，只能覆盖一些方法
每个servlet的
基本上将流程记录在某个xml文件中，但是我使用图形gui控制此过程
。
因此，基本上，我只向每个Servlet的一些方法中添加一些代码。
如何使这些方法由Spring框架管理？我需要做的基本事情是
使这些方法具有事务性（@Transactional）。
向博佐评论：
@Bozho让我们看看。
在这些servlet的方法中，我使用框架功能，例如，在当前会话中获取并保存的特殊变量。
所需的是，遍历这些基于框架的集合，同时将一些值保存在数据库中。
您建议的是引入一个新的非常复杂的对象，以便可以将其传递到服务层。 （服务层对框架，它的类和当前会话中保存的对象一无所知！
首先，我们将基于框架的集合包装到这样的对象，因此将所有内容复制到其中。
然后同样，Service层方法应该将更改保存在数据库中，或者更糟的情况是，返回一个新的复杂对象，以便Servlet框架方法可以根据Service层方法执行的结果来更新框架变量。但是您认为这是个好主意吗？
您也可以直接定义servlet在Spring应用程序上下文中，您将需要在 web.xml 中注册的代理 servlet，并委派到在<$ c $中配置为bean的servlet实例。 c> applicationContext.xml 。代理servlet配置了目标servlet bean的名称，它通过 WebApplicationContextUtils.getRequiredWebApplicationContext（）。getBean（...）并将所有处理委托给目标servlet。在这种情况下，您的servlet实例完全由Spring管理。
Correct me if anything is wrong.
As I understand, all Spring functionality, namely DI works when beans are got thru
Spring Context, ie getBean() method.
Otherwise, none can work, even if my method is marked @Transactional and I will
create the owning class with a new operator, no transaction management will be provided.
I use Tomcat 6 as a servlet container.
So, my question is: how to make Servlet methods managed by Spring framework.
The issue here is that I use a framework, and its servlets extend the functionality of
basic java Servlets, so they have more methods. Still, web.xml is present in an app as usual.
The thing is that I do not control the servlets creation flow, I can only override a few methods
of each servlet, the flow is basically written down in some xml file, but I control this process
using a graphical gui.
So, basically, I only add some code to a few methods of each Servlet.
How to make those methods managed by Spring framework? The basic thing I need to do is
making these methods transactional (@Transactional).
comment to Bozho:
@Bozho Let's see.
In these servlets' methods I work with framework capabilities, let's say special variables that are got and saved in the current session.
And what is needed, is looping through those framework-based collections while saving some values in a database.
What you suggest is introducing a new very complex object, so that it could be passed to a service layer. (Service layer will not know anything about framework, its classes and objects kept in current Session!
First, we "wrap" framework based collections to such a object, so copy everything into it.
Then, again, the Service layer method should either save changes in a database or, worse case, return a new complex object so that Servlet framework method could update framework variables depending on the result of Service layer method execution.
It is a workaround but do you think it is a good idea?
You can also define your servlets directly in the Spring application context. You'll need a "proxy" servlet registered in web.xml and delegating to the servlet instance which is configured as bean in the applicationContext.xml. Proxy servlet is configured with the name of the target servlet bean, it discovers this bean via WebApplicationContextUtils.getRequiredWebApplicationContext().getBean(...) and delegates all the processing to the target servlet. In this case an instance of your servlet is completely managed by Spring.
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