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Spring MVC - frustrated 404 error

Ranch Hand

Posts: 472

posted 1 year ago

Good day,

I trying to access to http://localhost:8080/control/greeting.html, but it return me 404 error, no problem when access to http://localhost:8080/control/ , which return me and display index.jsp file. i can also access to http://localhost:8080/control/hello.jsp , which return me blank page with title name, but the bean value "hellospring" doesn't render.

the project setup using spring boot, i got the same error when i replace WebInitializer with web.xml file. I did remove the web.xml when apply WebInitializer java file.

below are the structure, appreciated your guidance !

[Project setup]

src\main\java\com\mvc\WebInitializer file :

src\main\java\com\mvc\Webconfig file :

src\main\java\com\mvc\controller\HelloController.java

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">
	      
	      
	<servlet>
		<servlet-name>springDispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		
		<init-param> 
			<param-name>contextClass</param-name>
			<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
		</init-param>
		
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>com.mvc.WebConfig</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>*.html</url-pattern> 
	</servlet-mapping>
	
</web-app>

src\main\webapp\Hello.jsp

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

<groupId>com.mvc</groupId>
	<artifactId>control</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>

<name>Tutorial2_MVC4_Controller</name>
	<description>Demo project for Spring Boot</description>

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.3.3.RELEASE</version>
		<relativePath>C:/Users/kinseng/.m2/repository</relativePath>
	</parent>

<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
			<scope>provided</scope>
		</dependency>

<dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-jasper</artifactId>
			<scope>provided</scope>
		</dependency>

<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
		</dependency>

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.2</version>
			<scope>provided</scope>
		</dependency>

</dependencies>

<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

project_structure.PNG

Gordon Brown

Ranch Hand

Posts: 58

posted 1 year ago

Hi there,

Have you added some debugging statements to see if your controller method is being called?

My guess is that it's a problem with the view name you're supplying. I believe the default ViewResolver is a InternalResourceViewResolver. I think you therefore want to be returning a view name of "hello", rather than "hello.jsp".

SCJP 5, SCWCD 5

Nakata kokuyo

Ranch Hand

Posts: 472

posted 1 year ago

Thanks Gordy, i did changed that before, it doesn't help in my case.

Nakata kokuyo

Ranch Hand

Posts: 472

posted 1 year ago

I try print out from the controller method, it doesn't show anything too, the controller method doesn't seem calling

Prasad Krishnegowda

Ranch Hand

Posts: 672

I like...

posted 1 year ago

Change the Request Mapping in the controller, i.e @RequestMapping(value="/greeting") to @RequestMapping(value="/greeting.html").

Nakata kokuyo

Ranch Hand

Posts: 472

posted 1 year ago

Thanks Prasad, i tried but still no luck yet

Prasad Krishnegowda

Ranch Hand

Posts: 672

I like...

posted 1 year ago

Can you show us your log file, with DEBUG enabled for spring classes.

Nakata kokuyo

Ranch Hand

Posts: 472

posted 1 year ago

Hi Prasad, thanks for helping !

I got this resolved after change below in WebInitializer.java, i have no idea whether using setConfigLocation() need any extra IDE setting

to

Yashwant Chavan

Greenhorn

Posts: 4

posted 1 year ago

Found similar article on this website, probably this will help, but its not in bootstrap

spring 4 mvc

Thanks

Spring MVC - frustrated 404 error

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