diff --git a/README.md b/README.md
index 6386b6c1701b240b4ef798985a818aca5fdc20f3..8477f47959eae63603f2ba745757c8e4772769e7 100644
--- a/README.md
+++ b/README.md
@@ -122,4 +122,14 @@ GoKu API Gateway CE，支持OpenAPI与微服务管理，支持私有云部署，
 优化：
 
 1. 架构优化，减少第三方依赖，提升网关性能；
-2. 弃置mysql、redis数据库的使用，改用配置文件方式读取文件配置。
\ No newline at end of file
+2. 弃置mysql、redis数据库的使用，改用配置文件方式读取文件配置。
+
+#### V2.0.1（2018/5/4）
+优化：
+
+1. 优化网关的错误提示。
+
+
+修复：
+
+1. 修复访问网关根路径时，报越界错误。
\ No newline at end of file
diff --git a/release/goku-ce-1.0.0.zip b/release/goku-ce-1.0.0.zip
deleted file mode 100644
index f70c623152b535ab33237e694e73ebd2e412df31..0000000000000000000000000000000000000000
Binary files a/release/goku-ce-1.0.0.zip and /dev/null differ
diff --git a/release/goku-ce-1.0.2.zip b/release/goku-ce-1.0.2.zip
deleted file mode 100644
index b0afafa9855de5f632fe78e113518576b2c44dcd..0000000000000000000000000000000000000000
Binary files a/release/goku-ce-1.0.2.zip and /dev/null differ
diff --git a/release/goku-ce-2.0.0.zip b/release/goku-ce-2.0.0.zip
deleted file mode 100644
index 781eae7cf56aad31a07e0a75917581b0dfbf47b8..0000000000000000000000000000000000000000
Binary files a/release/goku-ce-2.0.0.zip and /dev/null differ
diff --git a/release/goku-ce-1.0.1.zip b/release/goku_ce_1.0.1.zip
similarity index 100%
rename from release/goku-ce-1.0.1.zip
rename to release/goku_ce_1.0.1.zip
diff --git a/release/goku-ce-1.0.3.zip b/release/goku_ce_1.0.3.zip
similarity index 100%
rename from release/goku-ce-1.0.3.zip
rename to release/goku_ce_1.0.3.zip
diff --git a/release/goku_ce_2.0.1.zip b/release/goku_ce_2.0.1.zip
new file mode 100644
index 0000000000000000000000000000000000000000..bf94fcb958d32b104415e8d697fa27b666a7009d
Binary files /dev/null and b/release/goku_ce_2.0.1.zip differ
diff --git a/source_code/conf/parse_config.go b/source_code/conf/parse_config.go
index c18735a53ce3b7f6705de50c1eb2a3cc403e1a4e..1387751f6598b622dfbcae56e6c7cb1524b6ce87 100644
--- a/source_code/conf/parse_config.go
+++ b/source_code/conf/parse_config.go
@@ -32,11 +32,12 @@ func getGatewayList(path []string) []GatewayInfo {
 		var gateway GatewayInfo
 		c,err := ioutil.ReadFile(p + PthSep + "gateway.conf")
 		if err != nil {
-			panic("Error gateway config path!")
+
+			panic("Error gateway config path! Error path: " + p)
 		}
 		err = yaml.Unmarshal(c,&gateway)
 		if err != nil {
-			panic("Error gateway config!")
+			panic("Error gateway config! Error path: " + p)
 		}
 		if gateway.GatewayStatus != "on" {
 			continue
@@ -53,11 +54,11 @@ func getStrategyList(path string) Strategy {
 	var strategy Strategy
 	c,err := ioutil.ReadFile(path)
 	if err != nil {
-		panic("Error strategy config path!")
+		panic("Error strategy config path! Error path: " + path)
 	}
 	err = yaml.Unmarshal(c,&strategy)
 	if err != nil {
-		panic("Error strategy config!")
+		panic("Error strategy config! Error path: " + path)
 	}
 	return strategy
 }
@@ -66,11 +67,11 @@ func getApiList(path string) Api {
 	var api Api
 	c,err := ioutil.ReadFile(path)
 	if err != nil {
-		panic("Error api config path!")
+		panic("Error api config path! Error path: " + path)
 	}
 	err = yaml.Unmarshal(c,&api)
 	if err != nil {
-		panic("Error api config!")
+		panic("Error api config! Error path: " + path)
 	}
 	return api
 }
@@ -79,11 +80,11 @@ func getBackendList(path string) Backend {
 	var backend Backend
 	c,err := ioutil.ReadFile(path)
 	if err != nil {
-		panic("Error api config path!")
+		panic("Error backend config path! Error path: " + path)
 	}
 	err = yaml.Unmarshal(c,&backend)
 	if err != nil {
-		panic("Error api config!")
+		panic("Error backend config! Error path: " + path)
 	}
 	return backend
 }
diff --git a/source_code/middleware/request_mapping.go b/source_code/middleware/request_mapping.go
index 218fd59e0fb0af90335bf6a0662182cc14fe072d..256d52d6637f41990598ca7eabbe41864f617856 100644
--- a/source_code/middleware/request_mapping.go
+++ b/source_code/middleware/request_mapping.go
@@ -15,44 +15,45 @@ func Mapping(g *goku.Goku,res http.ResponseWriter, req *http.Request) (bool,stri
         if requestURI[1] == "" {
             res.WriteHeader(404)
             res.Write([]byte("Lack gatewayAlias"))
-            } else {
             return false,"Lack gatewayAlias"
-                res.WriteHeader(404)
-                return false,"Lack StrategyKey"
-            }
+        } else {
+            res.WriteHeader(404)
+            res.Write([]byte("Lack StrategyID"))
+            return false,"Lack StrategyID"
         }
-        gatewayAlias := requestURI[1]
-        strategyKey := requestURI[2]
-        urlLen := len(gatewayAlias) + len(strategyKey) + 2
-        flag := false
-        for _,m := range g.ServiceConfig.GatewayList{
-            if m.GatewayAlias == gatewayAlias{
-                for _,i := range m.StrategyList.Strategy{
-                    if i.StrategyID == strategyKey{
-                    flag = true
-                    f,r := IPLimit(m,i,res,req)
-                    if !f {
-                        res.Write([]byte(r))
-                        return false,r
-                    }
+    }
+    gatewayAlias := requestURI[1]
+    StrategyID := requestURI[2]
+    urlLen := len(gatewayAlias) + len(StrategyID) + 2
+    flag := false
+    for _,m := range g.ServiceConfig.GatewayList{
+        if m.GatewayAlias == gatewayAlias{
+            for _,i := range m.StrategyList.Strategy{
+                if i.StrategyID == StrategyID{
+                flag = true
+                f,r := IPLimit(m,i,res,req)
+                if !f {
+                    res.Write([]byte(r))
+                    return false,r
+                }
 
-                    f,r = Auth(i,res,req)
-                    if !f {
-                        res.Write([]byte(r))
-                        return false,r
-                    } 
+                f,r = Auth(i,res,req)
+                if !f {
+                    res.Write([]byte(r))
+                    return false,r
+                } 
 
-                    f,r = RateLimit(g,i)
-                    if !f {
-                        res.Write([]byte(r))
-                        return false,r
-                    }                    
-                    break
+                f,r = RateLimit(g,i)
+                if !f {
+                    res.Write([]byte(r))
+                    return false,r
+                }                    
+                break
                 }
-			}
-		}
-		if flag {
-			for _,i := range m.ApiList.Apis{
+		    }
+	    }
+        if flag {
+            for _,i := range m.ApiList.Apis{
                 if i.RequestURL == url[urlLen:]{
                     // 验证请求
                     if !validateRequest(i,req){
@@ -65,8 +66,8 @@ func Mapping(g *goku.Goku,res http.ResponseWriter, req *http.Request) (bool,stri
                     f,r := GetBackendInfo(i.BackendID,m.BackendList)
                     if !f {
                         res.WriteHeader(404)
-                        res.Write([]byte("Backend config are not exist!"))
-                        return false,"Backend config are not exist!"
+                        res.Write([]byte("Backend config is not exist!"))
+                        return false,"Backend config is not exist!"
                     }
                     
 
@@ -80,7 +81,7 @@ func Mapping(g *goku.Goku,res http.ResponseWriter, req *http.Request) (bool,stri
                     return true,string(response)
                 }
             }
-		}
+        }
 	}
     res.Write([]byte("URI Not Found"))
     return false,"URI Not Found"
@@ -127,7 +128,7 @@ func CreateRequest(api conf.ApiInfo,i conf.BackendInfo,httpRequest *http.Request
         }
 		if param == nil {
 			if reqParam.NotEmpty {
-				return 400, []byte("missing required parameters"),make(map[string][]string)
+				return 400, []byte("Missing required parameters"),make(map[string][]string)
 			} else {
 				continue
 			}