Fix deploy to maven center error

deploy.gradle

@@ -2,7 +2,7 @@ apply plugin: 'maven-publish'
 apply plugin: 'signing'
 
 gradle.taskGraph.whenReady { taskGraph ->
-    if (taskGraph.allTasks.any { it instanceof Sign } && project.ext.isReleaseVersion && isPublishing()) {
+    if (taskGraph.allTasks.any { it instanceof Sign } && project.ext.isReleaseVersion) {
         def id = System.getenv('GPG_ID')
         def file = '/home/travis/.gnupg/secring.gpg'
         def password = System.getenv('GPG_PASSWORD')
@@ -14,116 +14,57 @@ gradle.taskGraph.whenReady { taskGraph ->
 }
 
 ext {
-    pomFile = file("${project.buildDir}/generated-pom.xml")
     isReleaseVersion = !(projectVersion =~ /\.SNAPSHOT$/)
     isNeedSign = System.getenv('GPG_ID') && isReleaseVersion
-    isPublishing = {
-        gradle.taskGraph.allTasks.find { it.name =~ /(?:^|:)publish[^:]*ToMaven[^:]*$/ } != null
-    }
-}
-
-task javadocJar(type: Jar, dependsOn: javadoc) {
-    classifier = 'javadoc'
-    from javadoc.destinationDir
 }
 
-task sourceJar(type: Jar) {
+task sourcesJar(type: Jar) {
+    from sourceSets.main.allJava
     classifier = 'sources'
-    from sourceSets.main.allSource
 }
 
-artifacts {
-    archives jar
-    archives sourceJar
-    archives javadocJar
-}
-
-
-signing {
-    required { project.ext.isNeedSign }
-    sign configurations.archives
+task javadocJar(type: Jar) {
+    from javadoc
+    classifier = 'javadoc'
 }
 
 publishing {
     publications {
-        jar(MavenPublication) {
-            pom.withXml {
-                asNode().children().first() + {
-                    resolveStrategy = Closure.DELEGATE_FIRST
-                    name 'gRPC Spring Boot Starter'
-                    description 'gRPC Spring Boot Starter'
-                    url 'https://github.com/yidongnan/grpc-spring-boot-starter'
-                    scm {
-                        url 'https://github.com/yidongnan/grpc-spring-boot-starter'
-                        connection 'scm:git:git://github.com/yidongnan/grpc-spring-boot-starter.git'
-                        developerConnection 'scm:git:[email protected]:yidongnan/grpc-spring-boot-starter.git'
-                    }
-                    licenses {
-                        license {
-                            name 'MIT License'
-                            url 'http://www.opensource.org/licenses/mit-license.php'
-                            distribution 'repo'
-                        }
-                    }
-                    developers {
-                        developer {
-                            id 'yidongnan'
-                            name 'Michael Zhang'
-                            email '[email protected]'
-                        }
-                        developer {
-                            id 'ST-DDT'
-                            name 'Daniel Theuke'
-                            email '[email protected]'
-                            organization 'Heusch/Boesefeldt GmbH'
-                            organizationUrl 'http://www.heuboe.de'
-                        }
-                    }
-                }
-            }
-            pom.withXml {
-                asNode().dependencies.'*'.findAll() {
-                    it.scope.text() == 'runtime' && project.configurations.compile.allDependencies.find { dep ->
-                        dep.name == it.artifactId.text()
-                    }
-                }.each {
-                    if (it.groupId.text() == "net.devh" || it.groupId.text() == "io.grpc") {
-                        it.scope*.value = 'compile'
-                    }
-                }
-            }
+        mavenJava(MavenPublication) {
 
             from components.java
+            artifact sourcesJar
+            artifact javadocJar
 
-            artifact(sourceJar) {
-                classifier = 'sources'
-            }
-            artifact(javadocJar) {
-                classifier = 'javadoc'
-            }
-
-            if (signing.required) {
-                pom.withXml {
-                    writeTo(project.ext.pomFile)
-                    def pomAscFile = signing.sign(project.ext.pomFile).signatureFiles[0]
-                    artifact(pomAscFile) {
-                        classifier = null
-                        extension = 'pom.asc'
+            pom {
+                name = 'gRPC Spring Boot Starter'
+                description = 'gRPC Spring Boot Starter'
+                url = 'https://github.com/yidongnan/grpc-spring-boot-starter'
+                licenses {
+                    license {
+                        name = 'MIT License'
+                        url = 'http://www.opensource.org/licenses/mit-license.php'
+                        distribution = 'repo'
                     }
-                    project.ext.pomFile.delete()
                 }
-
-                // Sign the artifacts.
-                project.tasks.signArchives.signatureFiles.each {
-                    artifact(it) {
-                        def matcher = it.file =~ /-(sources|javadoc)\.jar\.asc$/
-                        if (matcher.find()) {
-                            classifier = matcher.group(1)
-                        } else {
-                            classifier = null
-                        }
-                        extension = 'jar.asc'
+                developers {
+                    developer {
+                        id = 'yidongnan'
+                        name = 'Michael Zhang'
+                        email = '[email protected]'
                     }
+                    developer {
+                        id = 'ST-DDT'
+                        name = 'Daniel Theuke'
+                        email = '[email protected]'
+                        organization = 'Heusch/Boesefeldt GmbH'
+                        organizationUrl = 'http://www.heuboe.de'
+                    }
+                }
+                scm {
+                    connection = 'scm:git:git://github.com/yidongnan/grpc-spring-boot-starter.git'
+                    developerConnection = 'scm:git:[email protected]:yidongnan/grpc-spring-boot-starter.git'
+                    url = 'https://github.com/yidongnan/grpc-spring-boot-starter'
                 }
             }
         }
@@ -141,16 +82,15 @@ publishing {
             }
         }
     }
-}
 
-model {
-    tasks.publishJarPublicationToMavenLocal {
-        dependsOn(project.tasks.signArchives)
+    signing {
+        required { project.ext.isNeedSign }
+        sign publishing.publications.mavenJava
     }
-    tasks.publishJarPublicationToMavenRepository {
-        dependsOn(project.tasks.signArchives)
-    }
-    tasks.signArchives {
-        onlyIf { isPublishing() }
+
+    javadoc {
+        if(JavaVersion.current().isJava9Compatible()) {
+            options.addBooleanOption('html5', true)
+        }
     }
 }