diff --git a/README.md b/README.md
index 8a57b12..dc7cb15 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,9 @@ When you need to use smart-doc to generate more API document information, you ca
         "className": "org.springframework.data.domain.Pageable",
         "replacementClassName": "com.power.doc.model.PageRequestDto" //Use custom PageRequestDto instead of JPA Pageable for document rendering.
   }],
+  "apiConstants": [{////Configure your own constant class, smart-doc automatically replaces with a specific value when parsing to a constant
+        "constantsClassName": "com.power.doc.constants.RequestParamConstant"
+  }],
   "requestHeaders": [// Set global request headers, no need to set
     {
       "name": "token",
diff --git a/README_CN.md b/README_CN.md
index c7ed11b..b972410 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -140,6 +140,9 @@ smart-doc官方目前已经开发完成maven 插件和gradle，你可以根据
       "className": "org.springframework.data.domain.Pageable",
       "replacementClassName": "com.power.doc.model.PageRequestDto" //自定义的PageRequestDto替换Pageable做文档渲染
   }],
+  "apiConstants": [{//从1.8.9开始配置自己的常量类，smart-doc在解析到常量时自动替换为具体的值
+        "constantsClassName": "com.power.doc.constants.RequestParamConstant"
+  }],
   "sourceCodePaths": [ //设置代码路径, 插件已经能够自动下载发布的源码包，没必要配置
     {
       "path": "src/main/java",
diff --git a/pom.xml b/pom.xml
index d702e78..48346ef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <artifactId>smart-doc</artifactId>
     <packaging>jar</packaging>
-    <version>1.8.8</version>
+    <version>1.8.9</version>
 
     <name>smart-doc</name>
     <url>https://github.com/shalousun/smart-doc.git</url>
@@ -59,7 +59,7 @@
         <dependency>
             <groupId>com.github.shalousun</groupId>
             <artifactId>common-util</artifactId>
-            <version>1.9.5</version>
+            <version>1.9.6</version>
         </dependency>
         <!--markdown to html-->
         <dependency>
diff --git a/src/main/java/com/power/doc/handler/SpringMVCRequestMappingHandler.java b/src/main/java/com/power/doc/handler/SpringMVCRequestMappingHandler.java
index ce36c37..66a9bc7 100644
--- a/src/main/java/com/power/doc/handler/SpringMVCRequestMappingHandler.java
+++ b/src/main/java/com/power/doc/handler/SpringMVCRequestMappingHandler.java
@@ -50,6 +50,7 @@ public class SpringMVCRequestMappingHandler {
      * @param serverUrl         server url
      * @param controllerBaseUrl spring mvc controller base url
      * @param method            JavaMethod
+     * @param constantsMap      project constant container
      * @return RequestMapping
      */
     public RequestMapping handle(String serverUrl, String controllerBaseUrl, JavaMethod method, Map<String, String> constantsMap) {
@@ -113,9 +114,11 @@ public class SpringMVCRequestMappingHandler {
                 String value = entry.getValue();
                 if (url.contains(key)) {
                     url = url.replace(key, value);
+                    url = url.replace("+", "");
                 }
                 if (shortUrl.contains(key)) {
                     shortUrl = shortUrl.replace(key, value);
+                    shortUrl = shortUrl.replace("+", "");
                 }
             }
             return RequestMapping.builder().setMediaType(mediaType).setMethodType(methodType)