如何在不使用注释的情况下创建 Spring 控制器? [英] How can I create a Spring controller without the use of the annotations?

问题描述

我正在学习 Spring Core 认证，我对这个问题有一些疑问:

I am studying for the Spring Core certification and I have some doubts related this question:

@Controller 注解是干什么用的?你怎么能创建一个没有注释的控制器?

What is the @Controller annotation used for? How can you create a controller without an annotation?

所以我知道 @Controller 注释表明一个特定的类充当控制器的角色.@Controller 注释充当被注释类的构造型，表明它的作用.调度程序扫描此类带注释的类以查找映射方法并检测 @RequestMapping 注释.

So I know that the @Controller annotation indicates that a particular class serves the role of a controller. The @Controller annotation acts as a stereotype for the annotated class, indicating its role. The dispatcher scans such annotated classes for mapped methods and detects @RequestMapping annotations.

所以控制器类是这样的:

So a controller class is something like this:

@Controller
public class AccountController {

    @RequestMapping("/listAccounts")
        public String list(Model model) {...}
    }
}

好的，这对我来说很清楚，但是创建一个没有注释的控制器究竟意味着什么?我该怎么做?通过XML配置还是如何?

Ok, this is pretty clear for me but what exactly means create a controller without an annotation? How can I do it? By XML configuration or how?

Tnx

推荐答案

public class AccountController extends MultiActionController {
    public ModelAndView listAccounts() {
        // your code
        return new ModelAndView("listAccounts.bean", "msg", "As you  want")
    }
}

web.xml

<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*.bean</url-pattern>
</servlet-mapping>

dispatcher-servlet.xml

<bean name="/listAccounts.bean" class="p1.AccountController"></bean>

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