diff --git a/build.gradle b/build.gradle
index 9f811c794..b4188c078 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,6 @@
 // Apply the java-library plugin to add support for Java Library
 plugins {
+    id 'com.github.sherter.google-java-format' version '0.8'
     id 'maven-publish'
 }
 println("Notice: current gradle version is " + gradle.gradleVersion)
@@ -18,7 +19,7 @@ ext {
     commonsLang3Version = "3.1"
     javapoetVersion = "1.7.0"
     picocliVersion = "3.6.0"
-    nettyVersion = "4.1.50.Final"
+    nettyVersion = "4.1.53.Final"
     nettySMSSLContextVersion = "1.2.0"
     toml4jVersion = "0.7.2"
     bcprovJDK15onVersion = "1.60"
@@ -60,9 +61,9 @@ allprojects {
 
     // In this section you declare where to find the dependencies of your project
     repositories {
+        mavenCentral()
         maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
         maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
-        mavenCentral()
     }
 
     dependencies {
@@ -159,6 +160,13 @@ sourceSets {
         resources.srcDir file('src/integration-test/resources')
     }
 }
+
+googleJavaFormat {
+    options style: 'AOSP'
+    source = sourceSets*.allJava
+    include '**/*.java'
+}
+
 configurations {
     integrationTestCompile.extendsFrom testCompile
     integrationTestRuntime.extendsFrom testRuntime
diff --git a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/builder/TransactionBuilderService.java b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/builder/TransactionBuilderService.java
index 8c656f889..9532e70cc 100644
--- a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/builder/TransactionBuilderService.java
+++ b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/builder/TransactionBuilderService.java
@@ -15,14 +15,13 @@
 package org.fisco.bcos.sdk.transaction.builder;
 
 import java.math.BigInteger;
-import java.security.SecureRandom;
+import java.util.Random;
+import java.util.concurrent.ThreadLocalRandom;
 import org.fisco.bcos.sdk.client.Client;
 import org.fisco.bcos.sdk.transaction.model.gas.DefaultGasProvider;
 import org.fisco.bcos.sdk.transaction.model.po.RawTransaction;
 
 public class TransactionBuilderService implements TransactionBuilderInterface {
-
-    private SecureRandom secureRandom = new SecureRandom();
     private Client client;
 
     /**
@@ -45,7 +44,8 @@ public RawTransaction createTransaction(
             BigInteger chainId,
             BigInteger groupId,
             String extraData) {
-        BigInteger randomId = new BigInteger(250, secureRandom);
+        Random r = ThreadLocalRandom.current();
+        BigInteger randomId = new BigInteger(250, r);
         BigInteger blockLimit = client.getBlockLimit();
         return RawTransaction.createTransaction(
                 randomId,
diff --git a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/codec/decode/TransactionDecoderService.java b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/codec/decode/TransactionDecoderService.java
index 329eb7a9a..c7a54aa81 100644
--- a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/codec/decode/TransactionDecoderService.java
+++ b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/codec/decode/TransactionDecoderService.java
@@ -122,7 +122,8 @@ public Map<String, List<List<Object>>> decodeEvents(String abi, List<Logs> logs)
                 (name, events) -> {
                     for (ABIDefinition abiDefinition : events) {
                         ABIObjectFactory abiObjectFactory = new ABIObjectFactory();
-                        ABIObject outputObject = abiObjectFactory.createEventInputObject(abiDefinition);
+                        ABIObject outputObject =
+                                abiObjectFactory.createEventInputObject(abiDefinition);
                         ABICodecObject abiCodecObject = new ABICodecObject();
                         for (Logs log : logs) {
                             String eventSignature =
diff --git a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/model/dto/CommonResponse.java b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/model/dto/CommonResponse.java
index c395054a3..32ac334a6 100644
--- a/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/model/dto/CommonResponse.java
+++ b/sdk-transaction/src/main/java/org/fisco/bcos/sdk/transaction/model/dto/CommonResponse.java
@@ -42,8 +42,7 @@ public int getReturnCode() {
         return returnCode;
     }
 
-    /**
-     * @param returnCode the returnCode to set  */
+    /** @param returnCode the returnCode to set */
     public void setReturnCode(int returnCode) {
         this.returnCode = returnCode;
     }
diff --git a/src/test/resources/applicationContext-sample.xml b/src/test/resources/applicationContext-sample.xml
index a4684aec2..4310009b5 100644
--- a/src/test/resources/applicationContext-sample.xml
+++ b/src/test/resources/applicationContext-sample.xml
@@ -48,7 +48,7 @@
 				<entry key="keyStoreDir" value="account" />
 				<entry key="accountAddress" value="" />
 				<entry key="accountFileFormat" value="pem" />
-				<entry key="accountPassword" value="" />
+				<entry key="password" value="" />
 				<entry key="accountFilePath" value="" />
 			</map>
 		</property>