URL mapping is not working in web.xml in spring - spring

Question

Package name controller where WelcomeController is there
folder view in WEB-INF where view files are there means html and static jsp
In view welcome.jsp
In WebContent web.xml and welcome-servlet.xml are there
When I mapped / but when I changed the url-pattern then it's not working e.g. /user/* following url is working for only /
http://localhost:3000/SpringPractice/user/welcome
Error is
WARNING: No mapping found for HTTP request with URI
[/SpringPractice/user/welcome] in DispatcherServlet with name
'welcome'
it's working if I set the to /.
Even I checked the controller no error because if no mapping is found then it'd not work for / pattern.
WEB.XML
<servlet>
<servlet-name>welcome</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<url-pattern>/user/*</url-pattern>
</servlet-mapping>
WelcomeController.java
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
#Controller
public class WelcomeController {
#RequestMapping(method=RequestMethod.GET,value="/user/welcome")
public String GET(ModelMap model){
//second is the message name
//3rd is the message
model.addAttribute("message","GET Method");
return "welcome"; //we'll always return the name of the view here welcome.jsp e.g. welcome
}
#RequestMapping(method=RequestMethod.POST,value="/user/welcome")
public String POST(ModelMap model){
model.addAttribute("message","POST Method");
return "welcome";
}
}
welcome-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="controller" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

Answer 1

Your web.xml needs to be modified if you want the servlet to map to SpringPractice as the root
Change your web.xml to look like this:
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<url-pattern>/SpringPractice/*</url-pattern>
</servlet-mapping>
It's also possible you are using the wrong port. Tomcat (Which I am assuming you are using here) uses port 8080 by default.
The URL: http://localhost:8080/SpringPractice/user/welcome
Should now work just fine
The following is not needed, is just might be helpful
Also, you can use #RequestMapping on the class level if you wish.
#Controller
#RequstMapping(value="/user/welcome")
public class WelcomeController {
#RequestMapping(method=RequestMethod.GET, value="")
public String GET(ModelMap model){
//second is the message name
//3rd is the message
model.addAttribute("message","GET Method");
return "welcome"; //we'll always return the name of the view here welcome.jsp e.g. welcome
}
#RequestMapping(method=RequestMethod.POST, value="")
public String POST(ModelMap model){
model.addAttribute("message","POST Method");
return "welcome";
}
}
By adding RequestMapping(value="/user/welcome") to the top of your controller class all the mappings under it will use that as a base. It's nice if you know a certain controller will be handeling all requests from "www.MyCoolSite.com/user/welcome"
I hope this helps.