如何指定在此Spring MVC演示应用程序中显示的第一页是什么？

Question

I am studtyin for the Spring Core certification and I have a doubt related Spring MVC use.

I have a demo webapp. When I run it on TomCat server it is automatically open this URL into the browser:

http://localhost:8080/mvc/

that show a web page.

Reading on the course slides it say that:

Once deployed, navigate to the index page at http://localhost:8080/mvc . You should see the index page display

Ok, I can't find no information about a main page that have to be open as entry point of my webapp but I find the index.html file into the folder: /mvc/src/main/webapp/index.html

So my doubt is: the webap folder is a folder that could contains my views (the other jsp views of the webapp are into some subdirectory into this folder) and so if I put here an index.html file it is open by default at the startup of the web application without that I need to specify a welcome file or something like this?

Tnx

Answer 1

The welcome file mechanism is specified in the servlet specifications (section 10.10 of the servlet 3.0 version). It doesn't have much to do with Spring.

In the case of Tomcat, if you don't specify any welcome file in your webapp's descriptor, the default configuration (present in tomcat's conf/web.xml file) is used instead. And it contains

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

which means that Tomcat will use these 3 files as welcome file.

Answer 2

in your web.xml file there is an entry named :

<welcome-file-list>
   <welcome-file>index</welcome-file>
</welcome-file-list>

there you can define your own starting point.