title: Gradle build fail
body: <p>I am using the tutorial at <a href="https://spring.io/guides/gs/producing-web-service/#initial" rel="noreferrer">https://spring.io/guides/gs/producing-web-service/#initial</a> to try and produce a SOAP web service. I am using Gradle to manage my dependencies. </p>
  
  <p>I have a .xsd file which specifies certain classes that I want gradle to        create.</p>
  
  <p>However, when I try to run a gradle build on the build.gradle file in eclipse I get the following error:</p>
  
  <pre><code>FAILURE: Build failed with an exception.
  
  * Where:
  Build file 'C:\Users\zekucukkose\workspace2\gs-producing-web-service-initial\build.gradle' 
  line: 32
  
  * What went wrong:
  A problem occurred evaluating root project 'gs-producing-web-service-initial'.
  
  &gt; Could not find method jaxb() for arguments [com.sun.xml.bind:jaxb-xjc:2.2.4-1]
   on root project 'gs-producing-web-service-initial'.
  </code></pre>
  
  <p>Lines 27 through 34 are as follows:</p>
  
  <pre><code>27 dependencies {
  28    compile("org.springframework.boot:spring-boot-starter-web")
  29        compile("org.springframework.boot:spring-boot-starter-ws")
  30    testCompile("org.springframework.boot:spring-boot-starter-test")
  31    compile("wsdl4j:wsdl4j:1.6.1")
  32    jaxb("com.sun.xml.bind:jaxb-xjc:2.2.4-1")
  33    compile(files(genJaxb.classesDir).builtBy(genJaxb))
  34 }
  </code></pre>
  
  <p>jaxb is what is used to generate the actual classes as far as I'm aware.</p>
  
  <p>If anyone could help, I'd really appreciate it.
  Thanks</p>
  
  <p>This is the whole script:</p>
  
  <pre><code>buildscript {
      repositories {
          mavenCentral()
      }
      dependencies {
          classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.7.RELEASE")
      }
  }
  
  apply plugin: 'java'
  apply plugin: 'eclipse'
  apply plugin: 'idea'
  apply plugin: 'spring-boot'
  
  jar {
      baseName = 'gs-producing-web-service'
      version =  '0.1.0'
  }
  
  repositories {
      mavenCentral()
  }
  
  sourceCompatibility = 1.8
  targetCompatibility = 1.8
  
  dependencies {
      compile("org.springframework.boot:spring-boot-starter-web")
          compile("org.springframework.boot:spring-boot-starter-ws")
      testCompile("org.springframework.boot:spring-boot-starter-test")
      compile("wsdl4j:wsdl4j:1.6.1")
      jaxb("com.sun.xml.bind:jaxb-xjc:2.2.4-1")
      compile(files(genJaxb.classesDir).builtBy(genJaxb))
  }
  
  task wrapper(type: Wrapper) {
      gradleVersion = '2.3'
  }
  
  task genJaxb {
      ext.sourcesDir = "${buildDir}/generated-sources/jaxb"
      ext.classesDir = "${buildDir}/classes/jaxb"
      ext.schema = "src/main/resources/countries.xsd"
  
      outputs.dir classesDir
  
      doLast() {
          project.ant {
              taskdef name: "xjc", classname: "com.sun.tools.xjc.XJCTask",
                      classpath: configurations.jaxb.asPath
              mkdir(dir: sourcesDir)
              mkdir(dir: classesDir)
  
              xjc(destdir: sourcesDir, schema: schema) {
                  arg(value: "-wsdl")
                  produces(dir: sourcesDir, includes: "**/*.java")
              }
  
              javac(destdir: classesDir, source: 1.6, target: 1.6, debug: true,
                      debugLevel: "lines,vars,source",
                      classpath: configurations.jaxb.asPath) {
                  src(path: sourcesDir)
                  include(name: "**/*.java")
                  include(name: "*.java")
              }
  
              copy(todir: classesDir) {
                  fileset(dir: sourcesDir, erroronmissingdir: false) {
                      exclude(name: "**/*.java")
                  }
              }
          }
      }
  }
  
  configurations {
      jaxb
  }
  
  jar {
      baseName = 'gs-producing-web-service'
      version =  '0.1.0'
      from genJaxb.classesDir
  }
  </code></pre>