org.springframework.boot.web.support does not exist
<p>I'm changing build systems from maven to gradle for a spring boot project. I get this stacktrace</p>

<pre><code>19:03:08: Executing external task 'bootRun'...
/home/dac/proj/spring-boot-master/spring-boot-samples/spring-boot-sample-jetty-jsp/src/main/java/sample/jetty/jsp/SampleJettyJspApplication.java:22: error: package org.springframework.boot.web.support does not exist
import org.springframework.boot.web.support.SpringBootServletInitializer;
                                           ^
/home/dac/proj/spring-boot-master/spring-boot-samples/spring-boot-sample-jetty-jsp/src/main/java/sample/jetty/jsp/SampleJettyJspApplication.java:25: error: cannot find symbol
public class SampleJettyJspApplication extends SpringBootServletInitializer {
                                               ^
  symbol: class SpringBootServletInitializer
/home/dac/proj/spring-boot-master/spring-boot-samples/spring-boot-sample-jetty-jsp/src/main/java/sample/jetty/jsp/SampleJettyJspApplication.java:27: error: method does not override or implement a method from a supertype
    @Override
    ^
3 errors
:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
&gt; Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 2.334 secs
Compilation failed; see the compiler error output for details.
19:03:10: External task execution finished 'bootRun'.
</code></pre>

<p>My <code>build.gradle</code></p>

<pre><code>buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.springframework.boot:spring-boot-gradle-plugin:1.3.6.RELEASE"
        classpath 'org.springframework:springloaded:1.2.5.RELEASE'
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot'
apply plugin: 'rebel'

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath group: 'org.zeroturnaround', name: 'gradle-jrebel-plugin', version: '1.1.3'
    }
}
jar {
    baseName = 'gs-spring-boot'
    version =  '0.1.0'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

dependencies {
    // tag::jetty[]
    compile("org.springframework.boot:spring-boot-starter-web") {
        exclude module: "spring-boot-starter-tomcat"
    }
    compile("org.springframework.boot:spring-boot-starter-jetty")
    // end::jetty[]
    // tag::actuator[]
    compile("org.springframework.boot:spring-boot-starter-actuator")

    testCompile("org.springframework.boot:spring-boot-starter-test")
    testCompile("junit:junit")

}

// change default IntelliJ output directory for compiling classes
idea {
    module {
        inheritOutputDirs = false
        outputDir = file("$buildDir/classes/main/")
    }
}

task wrapper(type: Wrapper) {
    gradleVersion = '2.3'
}
</code></pre>

<p>My <code>pom.xml</code></p>

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;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"&gt;
    &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
    &lt;parent&gt;
        &lt;!-- Your own application should inherit from spring-boot-starter-parent --&gt;
        &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
        &lt;artifactId&gt;spring-boot-samples&lt;/artifactId&gt;
        &lt;version&gt;1.4.0.BUILD-SNAPSHOT&lt;/version&gt;
    &lt;/parent&gt;
    &lt;artifactId&gt;spring-boot-sample-jetty-jsp&lt;/artifactId&gt;
    &lt;packaging&gt;war&lt;/packaging&gt;
    &lt;name&gt;Spring Boot Jetty JSP Sample&lt;/name&gt;
    &lt;description&gt;Spring Boot Jetty JSP Sample&lt;/description&gt;
    &lt;url&gt;http://projects.spring.io/spring-boot/&lt;/url&gt;
    &lt;organization&gt;
        &lt;name&gt;Pivotal Software, Inc.&lt;/name&gt;
        &lt;url&gt;http://www.spring.io&lt;/url&gt;
    &lt;/organization&gt;
    &lt;properties&gt;
        &lt;main.basedir&gt;${basedir}/../..&lt;/main.basedir&gt;
        &lt;m2eclipse.wtp.contextRoot&gt;/&lt;/m2eclipse.wtp.contextRoot&gt;
    &lt;/properties&gt;
    &lt;dependencies&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
            &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
            &lt;exclusions&gt;
                &lt;exclusion&gt;
                    &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                    &lt;artifactId&gt;spring-boot-starter-tomcat&lt;/artifactId&gt;
                &lt;/exclusion&gt;
            &lt;/exclusions&gt;
        &lt;/dependency&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
            &lt;artifactId&gt;spring-boot-starter-validation&lt;/artifactId&gt;
            &lt;exclusions&gt;
                &lt;exclusion&gt;
                    &lt;groupId&gt;org.apache.tomcat.embed&lt;/groupId&gt;
                    &lt;artifactId&gt;tomcat-embed-el&lt;/artifactId&gt;
                &lt;/exclusion&gt;
            &lt;/exclusions&gt;
        &lt;/dependency&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
            &lt;artifactId&gt;spring-boot-starter-jetty&lt;/artifactId&gt;
            &lt;!--&lt;scope&gt;provided&lt;/scope&gt;--&gt;
        &lt;/dependency&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;javax.servlet&lt;/groupId&gt;
            &lt;artifactId&gt;jstl&lt;/artifactId&gt;
        &lt;/dependency&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;org.eclipse.jetty&lt;/groupId&gt;
            &lt;artifactId&gt;apache-jsp&lt;/artifactId&gt;
            &lt;!--&lt;scope&gt;provided&lt;/scope&gt;--&gt;
        &lt;/dependency&gt;
        &lt;dependency&gt;
            &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
            &lt;artifactId&gt;spring-boot-starter-test&lt;/artifactId&gt;
            &lt;scope&gt;test&lt;/scope&gt;
        &lt;/dependency&gt;
    &lt;/dependencies&gt;
    &lt;build&gt;
        &lt;plugins&gt;
            &lt;plugin&gt;
                &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
                &lt;configuration&gt;
                    &lt;executable&gt;true&lt;/executable&gt;
                &lt;/configuration&gt;
            &lt;/plugin&gt;
            &lt;plugin&gt;
                &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                &lt;artifactId&gt;maven-surefire-plugin&lt;/artifactId&gt;
                &lt;configuration&gt;
                    &lt;useSystemClassLoader&gt;false&lt;/useSystemClassLoader&gt;
                &lt;/configuration&gt;
            &lt;/plugin&gt;



        &lt;/plugins&gt;
    &lt;/build&gt;
&lt;/project&gt;
</code></pre>

<p>How should I make the package available to gradle?</p>