View becomes Not found in SpringMVC

Using the Spring framework, I create a web application (however, hello world).

I can browse index.jsp without the controller, but
When I implemented the controller, I received an error indicating that the View was not found, and the browser received a 404 error.

It's not a big program, so I'll attach it as it is.

src/main/java/{package}/ActionController.java

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.announcement.RequestMapping;
import org.springframework.web.bind.announcement.RequestMethod;

@ Controller
public class ActionController {

    @RequestMapping(value="/hello", method=RequestMethod.GET)
        public String hello() {
        return "showMessage";
    }

    @RequestMapping(value="/index", method=RequestMethod.GET)
    public String top() {
        return "index";
    }
}

struts-config.xml

<mvc:annotation-riven/>

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/"/>
        <property name="suffix" value=".jsp"/>
</bean>

web.xml (partial)

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern> /<url-pattern>
</servlet-mapping>

src/main/webapp/WEB-INF/view/index.jsp

<html>
    <body>
        <h2>Hello World!</h2>
    </body>
</html>

src/main/webapp/WEB-INF/view/showMessage.jsp

<html>
    <body>
        <h2>Hello World!</h2>
    </body>
</html>

Below is the log for local debugging.

 22:41:42.448 [http-bio-8080-exec-7] DEBUGo.s.web.servlet.DispatcherServlet-DispatcherServlet with name 'dispatcherServlet' processing GET request for [/contextpath/WEB-INF/view/showMessage.jsp]
22:41:42.448 [http-bio-8080-exec-7] DEBUGo.s.w.s.m.a.RequestMappingHandlerMapping-Looking up handler method for path/WEB-INF/view/showMessage.jsp
22:41:42.448 [http-bio-8080-exec-7] DEBUGo.s.w.s.m.a.RequestMappingHandlerMapping-Did not find handler method for [/WEB-INF/view/showMessage.jsp]
22:41:42.449 [http-bio-8080-exec-7] WARNo.s.web.servlet.PageNotFound-No mapping found for HTTP request with URI [/contextpath/WEB-INF/view/showMessage.jsp] in DispatcherServlet with name 'dispatcherServlet'
22:41:42.449 [http-bio-8080-exec-7] DEBUGo.s.web.servlet.DispatcherServlet-Successfully completed request
22:41:42.449 [http-bio-8080-exec-7] DEBUGo.s.web.servlet.DispatcherServlet-Successfully completed request

As far as the above logs are concerned, there is definitely a context path and
As long as you look at the "deployed resources" that appear in the Eclipse specification, you can actually
WEB-INF/view/index.jsp and showMessage.jsp existed.
I also checked if the controller ran through the breakpoint, but
Your request appears to have been accepted.

Why can't I find jsp?
Please give me instructions.

java spring mvc

2022-09-30 20:57

2 Answers

It may not be a definite answer because it is written as follows:

I also checked if the controller ran through the breakpoint, but
Your request appears to have been accepted.

However, there was a log that bothered me.
Is the URL accessed by a browser or something like "/contextpath/hello (for example, http://localhost:8080") "/contextpath/WEB-INF/view/showMessage.js"?

When Spring prints mNo mapping found for HTTP request と, you have accessed the URI (URL) that appears thereafter.In other words, "/contextpath/WEB-INF/view/showMessage.js" now has a request and says Spring has processed it.

When I tried to use the code that omarun posted, Hello World! was displayed.So the code is correct (Spring 4.1.1, Tomcat 8.0.17, JDK 1.8.0_45).
"Also, when I access the URL where ""/contextpath/index2"" does not exist, the following log is printed similar to this phenomenon."

 27-Aug-2015 15:54:52.853 WARNING [http-nio-8080-exec-5] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/contextpath/index2] in DispatcherServlet's name'Servlet'Servlet'Servlet's dispatch

2022-09-30 20:57

After replicating the repository to an external development environment and booting to an existing tomcat8 server, Hello World! was displayed.
After that, I checked again in the environment where I asked the question, but it still didn't start.

The latter environment didn't have much of a development environment, so I reinstalled Eclipse and found it working properly.
"Since the other day, I have received several error notifications from Windows saying ""An exception has occurred inside Eclipse"", and I have not seen any particular problems until now, so I have left it without looking at the details."
There is a possibility that it had some effect this time.
I'm sorry that I don't know the exact cause.
Thank you.

2022-09-30 20:57

If you have any answers or tips

Popular Tags

python x 4647

android x 1593

java x 1494

javascript x 1427

c x 927

c++ x 878

ruby-on-rails x 696

php x 692

python3 x 685

html x 656