diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
new file mode 100644
index 000000000..c39a297b0
--- /dev/null
+++ b/buildSrc/build.gradle.kts
@@ -0,0 +1,7 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    jcenter()
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/kotlin/versions.kt b/buildSrc/src/main/kotlin/versions.kt
new file mode 100644
index 000000000..3dd3ae4c1
--- /dev/null
+++ b/buildSrc/src/main/kotlin/versions.kt
@@ -0,0 +1,46 @@
+import org.gradle.kotlin.dsl.DependencyHandlerScope
+
+/*
+ * Copyright 2020 Mamoe Technologies and contributors.
+ *
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ *
+ * https://github.com/mamoe/mirai/blob/master/LICENSE
+ */
+
+object Versions {
+    object Mirai {
+        const val core = "0.30.0"
+        const val console = "0.3.6"
+        const val consoleWrapper = "0.1.3"
+    }
+
+    object Kotlin {
+        const val stdlib = "1.4-M1"
+        const val coroutines = "1.3.5-1.4-M1"
+        const val atomicFU = "0.14.2-1.4-M1"
+        const val serialization = "0.20.0-1.4-M1"
+        const val ktor = "1.3.2-1.4-M1"
+
+        const val io = "0.1.16"
+        const val coroutinesIo = "0.1.16"
+        const val dokka = "0.10.1"
+    }
+
+    object Android {
+        const val androidGradlePlugin = "3.5.3"
+    }
+
+    object Publishing {
+        const val bintray = "1.8.4-jetbrains-3"
+
+    }
+
+}
+
+@Suppress("unused")
+fun DependencyHandlerScope.kotlinx(id: String, version: String) = "org.jetbrains.kotlinx:kotlinx-$id:$version"
+
+@Suppress("unused")
+fun DependencyHandlerScope.ktor(id: String, version: String = Versions.Kotlin.ktor) = "io.ktor:ktor-$id:$version"
diff --git a/mirai-console-graphical/build.gradle.kts b/mirai-console-graphical/build.gradle.kts
index ed35655c2..35f97c320 100644
--- a/mirai-console-graphical/build.gradle.kts
+++ b/mirai-console-graphical/build.gradle.kts
@@ -1,18 +1,20 @@
 plugins {
     id("kotlinx-serialization")
-    id("org.openjfx.javafxplugin") version "0.0.8"
+//    id("org.openjfx.javafxplugin") version "0.0.8"
     id("kotlin")
     id("java")
 }
 
-javafx {
-    version = "13.0.2"
-    modules = listOf("javafx.controls")
-    //mainClassName = "Application"
-}
+//javafx {
+//    version = "13.0.2"
+//    modules = listOf("javafx.controls")
+//    //mainClassName = "Application"
+//}
 
 apply(plugin = "com.github.johnrengelman.shadow")
 
+version = Versions.Mirai.console
+
 tasks.withType<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar>() {
     manifest {
         attributes["Main-Class"] = "net.mamoe.mirai.console.graphical.MiraiGraphicalLoader"
@@ -43,7 +45,7 @@ dependencies {
     api(project(":mirai-console"))
 
     api(group = "no.tornado", name = "tornadofx", version = "1.7.19")
-    api(group = "com.jfoenix", name = "jfoenix", version = "9.0.8")
+    api(group = "com.jfoenix", name = "jfoenix", version = "8.0.8")
 
     testApi(group = "org.yaml", name = "snakeyaml", version = "1.25")
 }
diff --git a/mirai-console-graphical/src/main/kotlin/net/mamoe/mirai/console/graphical/util/JFoenixAdaptor.kt b/mirai-console-graphical/src/main/kotlin/net/mamoe/mirai/console/graphical/util/JFoenixAdaptor.kt
index c81136fb9..b53065ffb 100644
--- a/mirai-console-graphical/src/main/kotlin/net/mamoe/mirai/console/graphical/util/JFoenixAdaptor.kt
+++ b/mirai-console-graphical/src/main/kotlin/net/mamoe/mirai/console/graphical/util/JFoenixAdaptor.kt
@@ -17,6 +17,7 @@ internal fun EventTarget.jfxTabPane(op: JFXTabPane.() -> Unit = {}) = JFXTabPane
 internal fun EventTarget.jfxButton(text: String = "", graphic: Node? = null, op: Button.() -> Unit = {}) =
     JFXButton(text).attachTo(this, op) {
         if (graphic != null) it.graphic = graphic
+        it.buttonType = JFXButton.ButtonType.RAISED
     }
 
 fun EventTarget.jfxTextfield(value: String? = null, op: JFXTextField.() -> Unit = {}) =
diff --git a/mirai-console-terminal/build.gradle.kts b/mirai-console-terminal/build.gradle.kts
index de9307458..cb2da1d3f 100644
--- a/mirai-console-terminal/build.gradle.kts
+++ b/mirai-console-terminal/build.gradle.kts
@@ -7,6 +7,7 @@ plugins {
 
 apply(plugin = "com.github.johnrengelman.shadow")
 
+version = Versions.Mirai.console
 
 tasks.withType<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar>() {
     manifest {
diff --git a/mirai-console-wrapper/build.gradle.kts b/mirai-console-wrapper/build.gradle.kts
index d753f3ebb..98f62ce91 100644
--- a/mirai-console-wrapper/build.gradle.kts
+++ b/mirai-console-wrapper/build.gradle.kts
@@ -1,21 +1,10 @@
 plugins {
-    id("kotlin")
+    kotlin("jvm")
+    kotlin("plugin.serialization")
 }
 
 apply(plugin = "com.github.johnrengelman.shadow")
 
-val kotlinVersion: String by rootProject.ext
-val coroutinesVersion: String by rootProject.ext
-val coroutinesIoVersion: String by rootProject.ext
-val atomicFuVersion: String by rootProject.ext
-val kotlinXIoVersion: String by rootProject.ext
-
-val ktorVersion: String by rootProject.ext
-
-fun kotlinx(id: String, version: String) = "org.jetbrains.kotlinx:kotlinx-$id:$version"
-
-fun ktor(id: String, version: String) = "io.ktor:ktor-$id:$version"
-
 tasks.withType<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar> {
     manifest {
         attributes["Main-Class"] = "net.mamoe.mirai.console.wrapper.WrapperMain"
@@ -23,8 +12,6 @@ tasks.withType<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar> {
 }
 
 
-val miraiVersion: String by rootProject.ext
-
 kotlin {
     sourceSets {
         all {
@@ -36,15 +23,13 @@ kotlin {
     }
 }
 
-val serializationVersion: String by rootProject.ext
-
 dependencies {
     //core && protocol
-    api(kotlin("stdlib", kotlinVersion))
-    api(kotlin("serialization", kotlinVersion))
-    api(kotlin("reflect", kotlinVersion))
+    api(kotlin("stdlib", Versions.Kotlin.stdlib))
+    api(kotlin("serialization", Versions.Kotlin.stdlib))
+    api(kotlin("reflect", Versions.Kotlin.stdlib))
 
-    api(kotlinx("coroutines-core-common", coroutinesVersion))
+    api(kotlinx("coroutines-core", Versions.Kotlin.coroutines))
     api(kotlinx("serialization-runtime-common", serializationVersion))
     api(kotlinx("serialization-protobuf-common", serializationVersion))
     api(kotlinx("io", kotlinXIoVersion))
@@ -73,7 +58,7 @@ dependencies {
     api(kotlinx("serialization-runtime", serializationVersion))
 
     //for slf4j[ktor used]
-   // api(group = "org.apache.cassandra", name = "cassandra-all", version = "0.8.1")
+    // api(group = "org.apache.cassandra", name = "cassandra-all", version = "0.8.1")
 
     //mirai-console
     api(group = "com.alibaba", name = "fastjson", version = "1.2.62")
@@ -84,7 +69,6 @@ dependencies {
 
 }
 
-val miraiConsoleWrapperVersion: String by project.ext
-version = miraiConsoleWrapperVersion
+version = Versions.Mirai.consoleWrapper
 
 description = "Console with plugin support for mirai"
\ No newline at end of file
diff --git a/mirai-console/build.gradle.kts b/mirai-console/build.gradle.kts
index 27e56ba56..4f3f39be9 100644
--- a/mirai-console/build.gradle.kts
+++ b/mirai-console/build.gradle.kts
@@ -1,33 +1,15 @@
 import java.util.*
 
 plugins {
-    id("kotlinx-serialization")
-    id("kotlin")
+    kotlin("jvm")
+    kotlin("plugin.serialization")
     id("java")
     `maven-publish`
     id("com.jfrog.bintray")
 }
 
-
 apply(plugin = "com.github.johnrengelman.shadow")
 
-val kotlinVersion: String by rootProject.ext
-val atomicFuVersion: String by rootProject.ext
-val coroutinesVersion: String by rootProject.ext
-val kotlinXIoVersion: String by rootProject.ext
-val coroutinesIoVersion: String by rootProject.ext
-
-val klockVersion: String by rootProject.ext
-val ktorVersion: String by rootProject.ext
-
-val serializationVersion: String by rootProject.ext
-
-fun kotlinx(id: String, version: String) = "org.jetbrains.kotlinx:kotlinx-$id:$version"
-
-fun ktor(id: String, version: String) = "io.ktor:ktor-$id:$version"
-
-val miraiVersion: String by rootProject.ext
-
 kotlin {
     sourceSets {
         all {
@@ -39,8 +21,8 @@ kotlin {
     }
 }
 dependencies {
-    compileOnly("net.mamoe:mirai-core-jvm:$miraiVersion")
-    compileOnly("net.mamoe:mirai-core-qqandroid-jvm:$miraiVersion")
+    compileOnly("net.mamoe:mirai-core-jvm:${Versions.Mirai.core}")
+    compileOnly("net.mamoe:mirai-core-qqandroid-jvm:${Versions.Mirai.core}")
 
 
     compileOnly(group = "com.alibaba", name = "fastjson", version = "1.2.62")
@@ -48,23 +30,23 @@ dependencies {
     compileOnly(group = "com.moandjiezana.toml", name = "toml4j", version = "0.7.2")
 
 
-    compileOnly(kotlin("stdlib", kotlinVersion))
-    compileOnly(kotlin("serialization", kotlinVersion))
-    compileOnly(kotlin("reflect", kotlinVersion))
+    compileOnly(kotlin("stdlib", Versions.Kotlin.stdlib))
+    compileOnly(kotlin("serialization", Versions.Kotlin.stdlib))
+    compileOnly(kotlin("reflect", Versions.Kotlin.stdlib))
 
-    compileOnly(kotlinx("coroutines-io-jvm", coroutinesIoVersion))
-    compileOnly(kotlinx("coroutines-core", coroutinesVersion))
-    compileOnly(kotlinx("serialization-runtime", serializationVersion))
-    compileOnly("org.jetbrains.kotlinx:atomicfu:$atomicFuVersion")
+    compileOnly(kotlinx("coroutines-io-jvm", Versions.Kotlin.coroutinesIo))
+    compileOnly(kotlinx("coroutines-core", Versions.Kotlin.coroutines))
+    compileOnly(kotlinx("serialization-runtime", Versions.Kotlin.serialization))
+    compileOnly("org.jetbrains.kotlinx:atomicfu:${Versions.Kotlin.atomicFU}")
 
     compileOnly("org.bouncycastle:bcprov-jdk15on:1.64")
 
-    compileOnly(ktor("http-cio", ktorVersion))
-    compileOnly(ktor("http-jvm", ktorVersion))
-    compileOnly(ktor("io-jvm", ktorVersion))
-    compileOnly(ktor("client-core-jvm", ktorVersion))
-    compileOnly(ktor("client-cio", ktorVersion))
-    compileOnly(ktor("network", ktorVersion))
+    compileOnly(ktor("http-cio"))
+    compileOnly(ktor("http-jvm"))
+    compileOnly(ktor("io-jvm"))
+    compileOnly(ktor("client-core-jvm"))
+    compileOnly(ktor("client-cio"))
+    compileOnly(ktor("network"))
 }
 
 val miraiConsoleVersion: String by project.ext
diff --git a/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt b/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
index 12120bdd4..99c178777 100644
--- a/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
+++ b/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
@@ -41,7 +41,7 @@ abstract class AbstractCommandSender : CommandSender {
     internal val builder = StringBuilder()
 
     override fun appendMessage(message: String) {
-        builder.append(message).append("\n")
+        builder.appendln(message)
     }
 
     internal open suspend fun flushMessage() {
diff --git a/settings.gradle b/settings.gradle
index 6c0f7da5c..609c7534f 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -28,18 +28,26 @@ include(':mirai-console-wrapper')
 try{
     def javaVersion = System.getProperty("java.version")
     def versionPos = javaVersion.indexOf(".")
-    if (versionPos==-1) versionPos = javaVersion.indexOf("-")
-    if (versionPos==-1){
-        println("jdk version unknown")
-    }else{
-        def javaVersionNum = javaVersion.substring(0, versionPos).toInteger()
-        if (javaVersionNum >= 11) {
-            include(':mirai-console-graphical')
-        } else {
-            println("jdk版本为 "+ javaVersionNum)
-            println("当前使用的 JDK 版本为 ${System.getProperty("java.version")}, 最低需要 JDK 11 才能引入模块 `:mirai-console-graphical`")
+    def javaVersionNum = javaVersion.substring(0, 1).toInteger()
+
+    if (javaVersion.startsWith("1.")) {
+        javaVersionNum = javaVersion.substring(2, 3).toInteger()
+    } else {
+        if (versionPos==-1) versionPos = javaVersion.indexOf("-")
+        if (versionPos==-1){
+            println("jdk version unknown")
+        }else{
+            javaVersionNum = javaVersion.substring(0, versionPos).toInteger()
         }
     }
+    if (javaVersionNum <= 8) {
+        include(':mirai-console-graphical')
+    } else {
+        println("jdk版本为 "+ javaVersionNum)
+        println("当前使用的 JDK 版本为 ${System.getProperty("java.version")},  模块 `:mirai-console-graphical`不支持JDK 9+\n" +
+                "请使用OracleJDK 1.8 或使用OpenJDK 1.8并添加Java Fx依赖")
+    }
+
 }catch(Exception ignored){
     println("无法确定 JDK 版本, 将不会引入 `:mirai-console-graphical`")
 }