Spring MVC @RequestMapping for class level and method level not working

Question

I try put 2 request mapping since i want to point to home/home since later i will be having another controller with same name which is about/home. But i not sure why it was not working. If have only home it is working but home/home or about/home not working. The class level not working.

This the controller

package com.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.constant.server.HelperConstant;

@Controller
@RequestMapping("/home")
public class HomeController 
{
    @RequestMapping("/home")
    public String doDisplayPage()
    {
        return HelperConstant.VIEW_HOME;
    }

}

This the jsp

<html>
<body>
    <form action="home/home">
        <input type="text" name="t1"><br>
        <input type="text" name = "t2"><br>
        <input type ="submit">
    </form>
</body>
</html>

I am hitting HTTP Status 404 -

Edited

Attached the config files

package com.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class WebConfig extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        // TODO Auto-generated method stub
        return new Class[] {SpringConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        // TODO Auto-generated method stub
        return new String[] {"/"};
    }

}

This another config file

package com.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
@ComponentScan({"com.controller"})
public class SpringConfig 
{
    @Bean
    public InternalResourceViewResolver viewResolver()
    {
        InternalResourceViewResolver vr = new InternalResourceViewResolver();

        //vr.setPrefix("/WEB-INF/");
        vr.setSuffix(".jsp");

        return vr;
    }

}

Attached the picture of the folder structure

there is an additional findings as well whereby i trying to look for the jsp at home/home.jsp. can i know why such behaviour? by right should just look at home.jsp. If remvoe class level anotation, then it working fine or i create a folder inside webapp home it working fine but after click submit again it looks for home/home/home.jsp

I have added a method="POST"

now problem is after restart tomact

after click submit like this

if click submit again show eror 404

this my web.xml but i removed it already since i already use java or configurtion

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

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

</web-app>

HTTP error 404. stating it not found the jsp which it looking for home/home.jsp. But why need look into the folder home and search for home.jsp — Software Engineer
– Software Engineer, Commented Oct 30, 2019 at 5:51
why not remove class level annotation and also change form action="home"? — Ori Marko
– Ori Marko, Commented Oct 30, 2019 at 6:11
@SoftwareEngineer well it's weird. have you tried /home/home for action attribute? — HMD
– HMD, Commented Oct 30, 2019 at 6:43
Default request mapping method is 'GET' method. Form submit uses 'POST' method by default. You can set method to POST — Burak Akyıldız
– Burak Akyıldız, Commented Oct 30, 2019 at 11:47

Dot Batch · Accepted Answer · 2019-11-01 05:11:24Z

1

The problem is your action path <form action="home/home"> This is a relative path meaning it will do the following.

http://example.com/web_main/home - form action - > 
http://example.com/web_main/home/home (200) - form action -> 
http://example.com/web_main/home/home/home (404)

Others are suggesting /home/home but that isn't taking to account your application context path. The following would be the result.

http://example.com/web_main/home - form action - > http://example.com/home/home

Notice that the web_main is gone.

To fix your issue you need to leverage JSTL, add this to the JSP.

<%@ taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core" %>

<c:url value="/home/home" var="homeUrl" />`
<form action="${homeUrl}">

Add the import to the top of the JSP.

edited Nov 1, 2019 at 5:11

answered Nov 1, 2019 at 3:09

Dot Batch

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5 Comments

Software Engineer Over a year ago

hi, it show s HTTP Status 404 - when click submit for first time. localhost:8080/web_main/$%7BhomeUrl%7D?t1=2&t2=2

Software Engineer Over a year ago

i already add the dependency in maven <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency>

Software Engineer Over a year ago

i added inside head <head> <%@ taglib prefix = "c" uri = "java.sun.com/jsp/jstl/core" %> <c:url value="/about/home" var="homeUrl" /> </head> then it was working. Thanks ya

Dot Batch Over a year ago

@Software Engineer <%@ taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core" %> is an import that you add to the top of the jsp file.

Dot Batch Over a year ago

if you want, upload to github and i can make a comment directly

Prasad · Accepted Answer · 2019-11-04 03:46:29Z

1

There is one issue in the url. Have you observed the actual url? It is displaying /home/home/home after the context but url points to /home/home. Solution might be removing one /home from the action url in the form tag

<html>
<body>
    <form **action="home"**>
        <input type="text" name="t1"><br>
        <input type="text" name = "t2"><br>
        <input type ="submit">
    </form>
</body>
</html>

or

<html>
<body>
    <form action="/home/home">
        <input type="text" name="t1"><br>
        <input type="text" name = "t2"><br>
        <input type ="submit">
    </form>
</body>
</html>

answered Nov 4, 2019 at 3:46

Prasad

1,17714 silver badges22 bronze badges

1 Comment

Software Engineer Over a year ago

i followed urs for the head section and @Dot Batch solution. Thanks ya

krieger · Accepted Answer · 2019-10-30 20:07:03Z

0

What does your Spring app class look like? If you do not have one you should create one. Instead of having the @ComponentScan below the @Configuration tag, do something like below and it should be picked up easier, also maybe change your root tag to just / for easier for reading:

@SpringBootApplication
@ComponentScan(basePackages = {"com.*"})
class MyClass {
   public static void main(String[] args) {
      SpringApplication.run(MyClass.class)
   }
}

@Controller
@RequestMapping("/")
public class HomeController 
{
    @RequestMapping("/home")
    public String doDisplayPage()
    {
        return HelperConstant.VIEW_HOME;
    }

}

answered Oct 30, 2019 at 20:07

krieger

1

1 Comment

Software Engineer Over a year ago

hi mine is spring mvc. Need do like this?

Burak Akyıldız · Accepted Answer · 2019-10-31 13:47:24Z

0

When using RequestMapping default request mapping method value is GET method. Html form submit uses POST method by default. So you need to add post method to this url. You can give multiple method value for same request mapping.

answered Oct 31, 2019 at 13:47

Burak Akyıldız

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5 Comments

Software Engineer Over a year ago

<form action="home/home"> i tried, method level @RequestMapping(value = "home", method = RequestMethod.POST), class level @RequestMapping(value = "home"). but still not working got HTTP Status 405 - Request method 'GET' not supported; message :Request method 'GET' not supported; description: The specified HTTP method is not allowed for the requested resource.

Burak Akyıldız Over a year ago

You need to add post method on method level. And remove it from class level

Burak Akyıldız Over a year ago

Do you have any root url path ? If you have it you need to add it in form

Software Engineer Over a year ago

i tried adding post method previously as well but was not workign

Software Engineer Over a year ago

what is as root url?

gladiator · Accepted Answer · 2019-11-05 05:52:02Z

0

in 404 tab there are 3 home not 2 as you want in URL so its showing 404 . Instead of relative path home/home in submit form give absolute /home/home

answered Nov 5, 2019 at 5:52

gladiator

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2 Comments

Software Engineer Over a year ago

yup this correct but why showing 3 home? by right should only be 1 home since it in home.jsp in webapp

gladiator Over a year ago

it is due to redirection from application that URL is changed to home/home not to jsp which it is redirecting

Erwin · Accepted Answer · 2019-11-05 17:16:00Z

0

This is works

@Controller
@RequestMapping("/home")
public class HomeController {

    @RequestMapping(value = "/home")
    public String doDisplayPage() {
        return "../home";
    }
}

@Controller
@RequestMapping("/about")
public class AboutController {

    @RequestMapping(value = "/home")
    public String doDisplayPage() {
        return "../home";
    }
}

<html>
<body>
    <form action="/home/home">
        <input type="text" name="t1"><br>
        <input type="text" name = "t2"><br>
        <input type ="submit">
    </form>
</body>
</html>

Also you don't need web.xml since you have describe deployment descriptor in your WebConfig and SpringConfig

edited Nov 5, 2019 at 17:16

answered Nov 4, 2019 at 9:47

Erwin

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6 Comments

Software Engineer Over a year ago

hi still not working localhost:8080/web_main/home?t1=&t2= message description The requested resource is not available.

Erwin Over a year ago

are you using localhost:8080/web_main/home to open the page for the first time before click submit? where is "web_main" came from? I did not see in your configuration

Erwin Over a year ago

in the answer I wrote I use localhost:8080/home/home to open the page, then when submit is clicked, it will return to the same method and load localhost:8080/home/home again. The same handling is also happen with localhost:8080/about/home and both address load the same home.jsp.

Software Engineer Over a year ago

yup i using localhost:8080/web_main/home.jsp to open it first time. Then 2nd tiem submit becomes localhost:8080/web_main/home/home.jsp and 3rt time localhost:8080/web_main/home/home/home.jsp error 404/ web_main is the filder i created (project name)

Software Engineer Over a year ago

i got share u the web,xml but i removed it since not using since java i used for anotation based. But i got share u we,xml i use previously before deletetion

|

Ramu · Accepted Answer · 2019-11-05 18:23:38Z

0

If you are only trying to make your current code work, then a simple solution is to append Context Root to your form action as shown below.

<html>
<head>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<c:set var="ctx" value="${pageContext.request.contextPath}" />
</head>
<body>
    <form action="${ctx}/home/home">
        <input type="text" name="t1"><br> <input type="text"
            name="t2"><br> <input type="submit">
    </form>
</body>
</html>

answered Nov 5, 2019 at 18:23

Ramu

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