Application.java

package com.test.itext;
import java.util.Arrays;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class Application {

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(Application.class, args);

        System.out.println("Let's inspect the beans provided by Spring Boot:");

        String[] beanNames = ctx.getBeanDefinitionNames();
        Arrays.sort(beanNames);
        for (String beanName : beanNames) {
            System.out.println(beanName);
        }
    }

}

build.gradle

buildscript {
  repositories {
    maven { url "http://repo.spring.io/libs-release" }
    mavenLocal()
    mavenCentral()
    jcenter()
  }
  dependencies {
    classpath 'org.gradle.api.plugins:gradle-tomcat-plugin:1.2.3'
    classpath 'org.springframework.boot:spring-boot-gradle-plugin:1.1.1.RELEASE'
  }
}
apply plugin: 'war'
apply plugin: 'spring-boot'
apply plugin: 'tomcat'
war { baseName='itext' }
repositories {
  mavenLocal()
  mavenCentral()
  maven { url "http://repo.spring.io/libs-release" }
}
dependencies {
  def tomcatVersion = '7.0.42'
  tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
           "org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"
  tomcat("org.apache.tomcat.embed:tomcat-embed-jasper:${tomcatVersion}") {
        exclude group: 'org.eclipse.jdt.core.compiler', module: 'ecj'
  }
  compile("org.springframework.boot:spring-boot-starter-web")
}

GreetingController.java

package com.test.itext.controllers;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class GreetingController {
    @RequestMapping("/")
    public String test(){
      System.out.println("Test");
      return "Test";
    }
}