diff --git a/README.md b/README.md
index 9ca06e3..58dedc2 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
 - **Content-Type**: application/json
 - **Request Body**:
     
-    ``` json
+    ``` java
     {
         /**
          * Required
@@ -59,7 +59,7 @@
 - **Content-Type**: application/json
 - **Request Body**:
     
-    ``` json
+    ``` java
     {
         /**
          * Required
@@ -90,4 +90,4 @@
         "optional":"{\"your optional data json\":\"This is your data value\"}"
     }
     ```
-- **Response Body**: 签名结果字符串
\ No newline at end of file
+- **Response Body**: 签名结果字符串