Tomcat cant run war

Question

I downloaded demo webapp from https://start.spring.io/ (gradle kotlin project). Added 2 controllers for '/' and '/test' just to test if everything is OK. Here is the code:

@Controller
class IndexController {

@ResponseBody
@GetMapping("/")
fun main() : String {
    return "Hello World"
}



@Controller
class TestController {

@ResponseBody
@GetMapping("/test")
fun main() : String {
    return "test"
}

Then i added war plugin to gradle

apply plugin: 'war'

Then i print to terminal

gradlew build

and in build/libs found .war file. I deployed it to locat Tomcat, but

http://localhost:8080/demo-0.0.1-SNAPSHOT/
http://localhost:8080/demo-0.0.1-SNAPSHOT/test

respond with 404 error.

In IDEA i can easy start my app and see Hello World and test.

Any ideas?

Answer 1

[JAR file]

You are missing imports in controller.

put below imports in your controller.

package com.example.demo

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;

now remove the plugin apply plugin: 'war' and build project using gradlew build

it will create a jar file inside app_name\\build\\libs

open this location in command prompt and run below command.

java -jar <jar_file_name>.java

open application using below url.

http://localhost:8080

[WAR file]

extend SpringBootServletInitializer as below

import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
@SpringBootApplication
class DemoApplication : SpringBootServletInitializer()

put the plugin apply plugin: 'war' and build project using gradlew build

now inside app_name\\build\\libs it will create a war file.

deploy this war to tomcat server and access using below URL:

http://localhost:8080/demo-0.0.1-SNAPSHOT/