diff --git a/build.gradle b/build.gradle
index 049b9fe4..82ef8a1d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -46,7 +46,7 @@ allprojects {
         options {
             encoding "UTF-8"
             charSet 'UTF-8'
-            links "http://docs.oracle.com/javase/7/docs/api"
+            // links "https://docs.oracle.com/javase/8/docs/api/"
         }
     }
 }
diff --git a/gradle/mavenCentral-release.gradle b/gradle/mavenCentral-release.gradle
index ea941573..c71c7992 100644
--- a/gradle/mavenCentral-release.gradle
+++ b/gradle/mavenCentral-release.gradle
@@ -25,16 +25,16 @@ tasks.withType(Javadoc) {
     options {
         encoding "UTF-8"
         charSet 'UTF-8'
-        links "http://docs.oracle.com/javase/7/docs/api"
+        // links "https://docs.oracle.com/javase/8/docs/api/"
         addStringOption('Xdoclint:none', '-quiet') // 忽略检查@params 和 @return
     }
 }
 
-ext["signing.keyId"] = ''
-ext["signing.password"] = ''
-ext["signing.secretKeyRingFile"] = ''
-ext["ossrhUsername"] = ''
-ext["ossrhPassword"] = ''
+ext["signing.keyId"] = null
+ext["signing.password"] = null
+ext["signing.secretKeyRingFile"] = null
+ext["ossrhUsername"] = null
+ext["ossrhPassword"] = null
 
 File secretPropsFile = project.rootProject.file('local.properties')
 if (secretPropsFile.exists()) {
@@ -65,7 +65,7 @@ def getSnapshotRepositoryUrl() {
 }
 
 def isLocal() {
-    return ISLOCAL == 'true'
+    return project.findProperty('ISLOCAL') == 'true'
 }
 
 afterEvaluate { project ->
@@ -113,12 +113,11 @@ afterEvaluate { project ->
                                 project.file("build/intermediates/classes/debug")
                         )
                         doFirst {
-                            classpath += project.files(variants.collect { it.javaCompile.classpath.files })
+                            classpath += project.files(variants.collect { it.javaCompileProvider.get().classpath.files })
                         }
                         options {
-                            links("http://docs.oracle.com/javase/7/docs/api/")
-                            linksOffline("http://d.android.com/reference",
-                                    "${getAndroidSdkDirectory}/docs/reference")
+                            // links("https://docs.oracle.com/javase/8/docs/api/")
+                            // linksOffline("http://d.android.com/reference", "${getAndroidSdkDirectory}/docs/reference")
                             encoding "UTF-8"
                             charSet 'UTF-8'
                             addStringOption('Xdoclint:none', '-quiet') // 忽略检查@params 和 @return
@@ -135,13 +134,13 @@ afterEvaluate { project ->
 
                     def androidJavadocsJar = project.task("androidJavadocsJar", type: Jar, dependsOn: androidJavadocs) {
                         archiveClassifier = 'javadoc'
-                        archiveBaseName = "${JAR_PREFIX}${project.name}"
+                        archiveBaseName = "${JAR_PREFIX}${project.PUBLISH_ARTIFACT_ID}"
                     }
 
                     def androidSourcesJar = project.task("androidSourcesJar", type: Jar) {
                         archiveClassifier = 'sources'
                         from project.android.sourceSets.main.java.source
-                        archiveBaseName = "${JAR_PREFIX}${project.name}"
+                        archiveBaseName = "${JAR_PREFIX}${project.PUBLISH_ARTIFACT_ID}"
 
                         exclude "**/R.class"
                         exclude "**/BuildConfig.class"
@@ -231,6 +230,7 @@ afterEvaluate { project ->
         }
     }
     signing {
+        required { !isLocal() && project.findProperty("signing.keyId") }
         sign publishing.publications
     }
 }