diff --git a/.gitignore b/.gitignore
index d4777d2..94b7950 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,28 +1,10 @@
-# ---> macOS
-# General
+build
+classes
 .DS_Store
-.AppleDouble
-.LSOverride
-
-# Icon must end with two \r
-Icon

-
-# Thumbnails
-._*
-
-# Files that might appear in the root of a volume
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-.com.apple.timemachine.donotpresent
-
-# Directories potentially created on remote AFP share
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-
+.gradle
+.classpath
+.project
+.settings
+*.iml
+*.ipr
+*.iws
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..abcb4ab
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,92 @@
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+
+def JsonSlurper = Class.forName('groovy.json.JsonSlurper');
+def buildJSON = JsonSlurper.newInstance().parseText(new File("build.json").text)
+
+if (buildJSON.application) { apply plugin: 'application' }
+
+def baseProjectName = buildJSON?.project?.name ?: '__project_name__';
+def shellCommandName = baseProjectName
+def eclipseProjectName = baseProjectName
+def eclipseProjectComment = buildJSON?.project?.comment ?: '__project_name_comment__'
+def jarManifestMainClass = buildJSON?.project?.main ?: 'SampleMain'
+
+if (buildJSON.application) { mainClassName = jarManifestMainClass }
+archivesBaseName = buildJSON?.project?.archiveName ?: baseProjectName
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+def addRepo = new File(System.getProperty("user.home"), ".build_add.repo")
+
+repositories {
+  mavenLocal()
+  // mavenCentral()
+  maven() { url 'https://maven.aliyun.com/repository/central' }
+  if (addRepo.exists()) { maven() { url addRepo.text.trim() } }
+}
+
+tasks.withType(JavaCompile) {
+  options.encoding = "UTF-8"  
+}
+
+// '-x test' skip unit test
+defaultTasks 'build'
+
+buildscript {
+    repositories {
+        mavenLocal()
+        maven() { url 'https://maven.aliyun.com/repository/central' }
+        mavenCentral()
+        jcenter()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.5.11.RELEASE")
+    }
+}
+apply plugin: 'org.springframework.boot'
+springBoot {
+    mainClass = jarManifestMainClass
+}
+
+dependencies {
+    compile files(fileTree(dir: 'lib', includes: ['*.jar'], excludes: ['*-sources.jar', '*-javadoc.jar']))
+
+    if (buildJSON.repo != null && buildJSON.repo.dependencies != null) {
+        buildJSON.repo.dependencies.each {
+            compile("${it}")
+        }
+    }
+    if (buildJSON.repo != null && buildJSON.repo.testDependencies != null) {
+        buildJSON.repo.testDependencies.each {
+            testCompile("${it}")
+        }
+    }
+}
+
+eclipse {
+  project {
+    name = eclipseProjectName
+    comment = eclipseProjectComment
+  }
+  classpath {
+    defaultOutputDir = file('classes')
+    downloadSources = true
+    file {
+      whenMerged { classpath ->
+        classpath.entries.findAll { it.kind=='lib' }.each {
+          if ((it.path != null) && (it.sourcePath == null) && file(it.path.replace(".jar", "-sources.jar")).exists()) { 
+            it.sourcePath = getFileReferenceFactory().fromPath(it.path.replace(".jar", "-sources.jar"))
+          }
+        }
+      }
+    }
+  }
+}
+
+eclipseJdt << {
+  File f = file('.settings/org.eclipse.core.resources.prefs')
+  f.write('eclipse.preferences.version=1\n')
+  f.append('encoding/<project>=utf-8')
+}
diff --git a/build.json b/build.json
new file mode 100644
index 0000000..45f1758
--- /dev/null
+++ b/build.json
@@ -0,0 +1,21 @@
+{
+    "project": {
+        "name": "jwt-util",
+        "main": "me.hatter.tools.jwtutil.JwtUtilMain",
+        "archiveName": "jwt-util"
+    },
+    "application": false,
+    "java": "1.8",
+    "builder": {
+        "name": "gradle",
+        "version": "3.1"
+    },
+    "repo": {
+        "dependencies": [
+            "me.hatter:commons:3.0"
+        ],
+        "testDependencies": [
+            "junit:junit:4.12"
+        ]
+    }
+}