Action submission path problem in form form

The action submission path problem in form form the form form has some problems with the Action property and the method property;

I encountered an issue with the form form submission to Servelet processing:
(1) <form name= "Form1" action= "①? "Method=" ②? ">
Contents of the form
</form>

(2) The corresponding servlet class for processing user requests is Helloservlet.java;


(3) Configure the Web. xml file:
<servlet>
<servlet-name>③servlet</servlet-name>
<servlet-class>/HelloServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>③servlet</servlet-name>
<url-pattern>/①welcome</url-pattern>
</servlet-mapping>

Then in the login.jsp it should be:

<form action= "①welcome" method= "②? ">

In this case, the login.jsp URL is http://localhost:8080/jsp/login.jsp

And the URL of Helloservlet.java is Http://localhost:8080/jsp/welcome

Note: The ③ corresponds to two servlet-name in Web. XML, and the Url-pattern in ① is consistent with the Action property value in the form form.

Action submission path problem in form form