SpringMVC Controller is not getting called in spring boot application - spring

Question

I have create one simple spring mvc application using spring boot. But when I am trying to call localhost:8080 its not calling controller of this application. I need to know, where I am doing any mistake. I have mentioned my code below:
Controller class:
package com.gopal.controllers;
import java.util.ArrayList;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.gopal.models.Address;
import com.gopal.models.Employee;
#Controller
public class EmployeeMvcController {
public EmployeeMvcController() {
// TODO Auto-generated constructor stub
}
#RequestMapping(value="/", method = RequestMethod.GET)
public String getEmployeeList(ModelMap modelMap) {
System.out.println("starting controller");
List<Employee> employees = new ArrayList<>();
Employee e = new Employee();
e.setFirstName("Gopal");
e.setId(1);
e.setAddress(new Address(1, "BRM College", "Nayatola, Raiser"));
employees.add(e);
modelMap.put("employee", e);
System.out.println("ending controller");
return "welcome.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.gopal</groupId>
<artifactId>restdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>restdemo</name>
<description>Rest Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.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>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Main class:
package com.gopal.restdemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class RestdemoApplication {
public static void main(String[] args) {
SpringApplication.run(RestdemoApplication.class, args);
}
}
in application.properties, I have nothing. When I am trying to call above mentioned url, nothing is happening. I want my controller should get called. Once controller will get called, I will configure my other stuffs. Please let me know where I am doing any mistakes. Thanks in advance.
Gopal Lal

Answer 1

can you please try with #ComponentScan like below:
package com.gopal.restdemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
#ComponentScan(basePackages={"com.gopal.controllers"})
public class RestdemoApplication {
public static void main(String[] args) {
SpringApplication.run(RestdemoApplication.class, args);
}
}
and try with localhost:8080/ with GET request

Answer 2

The problem is that your bean controller is not scanned:
package com.gopal.controllers; -> controller package
com.gopal.restdemo; -> spring boot application package
If you don't add #ComponentScan("com.gopal") on your SpringBootApplication, by default it will scan the package where it is located : "com.gopal.restdemo".
If you will move your SpringBootApplication in common package for both of them, your problem will be fixed:
Move RestdemoApplication to com.gopal