Issue
I have a Spring Controller with several RequestMappings for different URIs. My servlet is "ui". The servlet's base URI only works with a trailing slash. I would like my users to not have to enter the trailing slash.
http://localhost/myapp/ui/
This one does not:
http://localhost/myapp/ui
It gives me a HTTP Status 404 message.
The servlet and mapping from my web.xml are:
<servlet>
<servlet-name>ui</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ui</servlet-name>
<url-pattern>/ui/*</url-pattern>
</servlet-mapping>
My Controller:
@Controller
public class UiRootController {
@RequestMapping(value={"","/"})
public ModelAndView mainPage() {
DataModel model = initModel();
model.setView("intro");
return new ModelAndView("main", "model", model);
}
@RequestMapping(value={"/other"})
public ModelAndView otherPage() {
DataModel model = initModel();
model.setView("otherPage");
return new ModelAndView("other", "model", model);
}
}
Solution
If your web application exists in the web server's webapps directory, for example webapps/myapp/
then the root of this application context can be accessed at http://localhost:8080/myapp/
assuming the default Tomcat port. This should work with or without the trailing slash, I think by default - certainly that is the case in Jetty v8.1.5
Once you hit /myapp
the Spring DispatcherServlet takes over, routing requests to the <servlet-name>
as configured in your web.xml
, which in your case is /ui/*
.
The DispatcherServlet then routes all requests from http://localhost/myapp/ui/
to the @Controller
s.
In the Controller itself you can use @RequestMapping(value = "/*")
for the mainPage() method, which will result in both http://localhost/myapp/ui/
and http://localhost/myapp/ui
being routed to mainPage().
Note: you should also be using Spring >= v3.0.3 due to SPR-7064
For completeness, here are the files I tested this with:
src/main/java/controllers/UIRootController.java
package controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class UiRootController {
@RequestMapping(value = "/*")
public ModelAndView mainPage() {
return new ModelAndView("index");
}
@RequestMapping(value={"/other"})
public ModelAndView otherPage() {
return new ModelAndView("other");
}
}
WEB-INF/web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0" metadata-complete="false">
<servlet>
<servlet-name>ui</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
<!-- spring automatically discovers /WEB-INF/<servlet-name>-servlet.xml -->
</servlet>
<servlet-mapping>
<servlet-name>ui</servlet-name>
<url-pattern>/ui/*</url-pattern>
</servlet-mapping>
</web-app>
WEB-INF/ui-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
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="controllers" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:order="2"
p:viewClass="org.springframework.web.servlet.view.JstlView"
p:prefix="/WEB-INF/views/"
p:suffix=".jsp"/>
</beans>
And also 2 JSP files at WEB-INF/views/index.jsp
and WEB-INF/views/other.jsp
.
Result:
http://localhost/myapp/
-> directory listinghttp://localhost/myapp/ui
andhttp://localhost/myapp/ui/
-> index.jsphttp://localhost/myapp/ui/other
andhttp://localhost/myapp/ui/other/
-> other.jsp
Hope this helps!
Answered By - andyb
Answer Checked By - Candace Johnson (JavaFixing Volunteer)