Initial springboot starter project setup - facing issue

I am trying to make a simple spring web application using Spring boot starter package provided. I am able to display 'Hello World' into console, but when I am trying to open localhost:(port), it is showing me . I am using JRE 8. Tried using JDK8 but also gives me same error. Do we have to use JDK or JRE ?

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Mon Jul 02 21:58:01 MDT 2018
There was an unexpected error (type=Not Found, status=404).
No message available

I am trying to resolve this issue from from last 2 days but I am stuck at this!.

Please find below images and code which I have in my system.

Project Structure

Spring Starter Project Application .java

package com.gami.mvc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class SpringStarterProjectApplication extends SpringBootServletInitializer{

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringStarterProjectApplication.class);
}

public static void main(String args) {
SpringApplication.run(SpringStarterProjectApplication.class, args);
System.out.println("Hello World");
}
}


Pom.Xml file

<?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.gami.mvc</groupId>
<artifactId>springStarterProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

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

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<!-- This is a web application -->

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

<!-- Tomcat embedded container -->

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


<!-- JSTL for JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>

<!-- Need this to compile JSP -->

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

<!-- Optional, test for static content, bootstrap CSS -->

<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7</version>
</dependency>

</dependencies>

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


</project>


Contoller. java

package com.gami.mvc;

import java.util.Map;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;

public class WelcomeController {

// inject via application.properties
@Value("${welcome.message:test}")
private String message = "Hello World";

@RequestMapping("/")
public String welcome(Map<String, Object> model) {
model.put("message", this.message);
return "welcome";

}
}


Application.properties

server.port=8456

spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp

welcome.message: Hello Gami


Error receiving when running the application

Error Message

Please any help is really appreciate!

Thank you
Hardik Gami
Console Image

Console msg after hitting to local host

Java Build Path Error

Java Build Path - Eclipse Java Build Path of Project

@Controller

@RestController

3 Answers
3

Spring will search for classes annotated with @Controller on the configured search path, without this annotation spring won't pick up your controller class.

@Controller

@Controller
public class WelcomeController { ... }


Need to annotate your class with @RestController, or this will search for the welcome.jsp

JRE will not have the Compiler. Use JDK, which will have development tools like javac, javap etc.

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