diff --git a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/ApiClient.java b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/ApiClient.java
index 48d2e36..012686b 100644
--- a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/ApiClient.java
+++ b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/ApiClient.java
@@ -46,8 +46,7 @@ public interface ApiClient {
     }
 
     default <T> HttpResponse<T> post(String url, QueryParameter parameters, HttpHeaders headers, RequestBody body, Class<T> responseClass) {
-        HttpRequest httpRequest = new HttpRequest.Builder()
-                .httpMethod(HttpMethod.POST)
+        HttpRequest httpRequest = new HttpRequest.Builder().httpMethod(HttpMethod.POST)
                 .url(url)
                 .parameters(parameters)
                 .headers(headers)
diff --git a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Nonce.java b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Nonce.java
index c0628e1..5f5e117 100644
--- a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Nonce.java
+++ b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Nonce.java
@@ -17,4 +17,9 @@ public class Nonce {
     public static String ofNonce() {
         return UUID.randomUUID().toString().replace("-", "").toLowerCase();
     }
+
+    public static String ofShortNonce() {
+        // TODO　短ID
+        throw new IllegalArgumentException();
+    }
 }
diff --git a/scfs-api-core/src/test/java/com/czcb/scfs/api/core/util/NonceTest.java b/scfs-api-core/src/test/java/com/czcb/scfs/api/core/util/NonceTest.java
new file mode 100644
index 0000000..d56cdaa
--- /dev/null
+++ b/scfs-api-core/src/test/java/com/czcb/scfs/api/core/util/NonceTest.java
@@ -0,0 +1,12 @@
+package com.czcb.scfs.api.core.util;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class NonceTest {
+
+    @Test
+    void ofNonce() {
+        Assertions.assertEquals(32, Nonce.ofNonce().length());
+    }
+}
\ No newline at end of file
diff --git a/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/EchoService.java b/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/EchoService.java
index 967de50..83c1ac8 100644
--- a/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/EchoService.java
+++ b/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/EchoService.java
@@ -26,8 +26,7 @@ public class EchoService {
     public void echo() {
         String url = "/echo";
         HttpHeaders headers = new HttpHeaders();
-        EchoRequest request = new EchoRequest();
-        request.setDatetime(DateTimes.ofNow());
+        EchoRequest request = new EchoRequest().setDatetime(DateTimes.ofNow());
 
         HttpResponse<EchoResponse> response = apiClient.post(url, headers, request.toJsonRequest(), EchoResponse.class);
         if (Objects.isNull(response.getServiceResponse()) || !response.getServiceResponse().ok()) {
diff --git a/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/model/EchoRequest.java b/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/model/EchoRequest.java
index 0826ef5..52a6283 100644
--- a/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/model/EchoRequest.java
+++ b/scfs-api-service/src/main/java/com/czcb/scfs/api/service/echo/model/EchoRequest.java
@@ -1,19 +1,15 @@
 package com.czcb.scfs.api.service.echo.model;
 
 import com.czcb.scfs.api.core.ApiRequest;
+import lombok.Data;
+import lombok.experimental.Accessors;
 
 /**
  * @author wangwei
  * @since 2.0.0
  */
+@Data
+@Accessors(chain = true)
 public class EchoRequest implements ApiRequest {
     private String datetime;
-
-    public String getDatetime() {
-        return datetime;
-    }
-
-    public void setDatetime(String datetime) {
-        this.datetime = datetime;
-    }
 }