diff --git a/pom.xml b/pom.xml
index 4bfa264..3a386bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,7 +70,6 @@
 			<groupId>com.github.ben-manes.caffeine</groupId>
 			<artifactId>caffeine</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
diff --git a/src/main/java/org/alis/.DS_Store b/src/main/java/org/alis/.DS_Store
new file mode 100644
index 0000000..77d0568
Binary files /dev/null and b/src/main/java/org/alis/.DS_Store differ
diff --git a/src/main/java/org/alis/blackchain/.DS_Store b/src/main/java/org/alis/blackchain/.DS_Store
new file mode 100644
index 0000000..d850428
Binary files /dev/null and b/src/main/java/org/alis/blackchain/.DS_Store differ
diff --git a/src/main/java/org/alis/blackchain/AlisChainApplication.java b/src/main/java/org/alis/blackchain/AlisChainApplication.java
index 357f888..d9a391b 100644
--- a/src/main/java/org/alis/blackchain/AlisChainApplication.java
+++ b/src/main/java/org/alis/blackchain/AlisChainApplication.java
@@ -7,12 +7,12 @@ import org.springframework.boot.builder.SpringApplicationBuilder;
 @SpringBootApplication
 public class AlisChainApplication {
 
-	public static void main(String[] args) {
-		new SpringApplicationBuilder()
-				.sources(AlisChainApplication.class)
-				.main(AlisChainApplication.class)
-				.web(WebApplicationType.SERVLET)
-				.run(args);
-	}
+    public static void main(String[] args) {
+        new SpringApplicationBuilder()
+                .sources(AlisChainApplication.class)
+                .main(AlisChainApplication.class)
+                .web(WebApplicationType.SERVLET)
+                .run(args);
+    }
 
 }
diff --git a/src/main/java/org/alis/blackchain/service/OkxExchangeAdapter.java b/src/main/java/org/alis/blackchain/service/OkxExchangeAdapter.java
index 76d9bfc..afdb369 100644
--- a/src/main/java/org/alis/blackchain/service/OkxExchangeAdapter.java
+++ b/src/main/java/org/alis/blackchain/service/OkxExchangeAdapter.java
@@ -1,7 +1,6 @@
 package org.alis.blackchain.service;
 
 import cn.hutool.core.lang.Pair;
-import cn.hutool.core.net.URLEncodeUtil;
 import cn.hutool.core.net.url.UrlBuilder;
 import cn.hutool.core.net.url.UrlPath;
 import cn.hutool.core.util.IdUtil;
@@ -14,7 +13,6 @@ import cn.hutool.json.JSONUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.alis.blackchain.annotation.ExchangeCommand;
 import org.alis.blackchain.constanst.ExchangeEnum;
-import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.collections4.MapUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
@@ -24,7 +22,6 @@ import javax.crypto.spec.SecretKeySpec;
 import java.math.BigDecimal;
 import java.net.InetSocketAddress;
 import java.net.Proxy;
-import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
 import java.time.ZoneId;