diff --git a/src/utils/random_number.rs b/src/utils/random_number.rs
index f78ef37..3c545f2 100644
--- a/src/utils/random_number.rs
+++ b/src/utils/random_number.rs
@@ -32,10 +32,12 @@ impl GenerateRandomNumberInterface for GenerateRandomNumber {
 }
 
 impl GenerateRandomNumber {
+    pub fn new() -> GenerateRandomNumberInterfaceObj {
+        Arc::new(GenerateRandomNumber)
+    }
     pub fn inject() -> impl FnOnce(&mut web::ServiceConfig) {
-        let g = WebGenerateRandomNumberInterfaceObj::new(Arc::new(GenerateRandomNumber));
         let f = move |cfg: &mut web::ServiceConfig| {
-            cfg.app_data(g);
+            cfg.app_data(WebGenerateRandomNumberInterfaceObj::new(Self::new()));
         };
 
         Box::new(f)
diff --git a/src/utils/random_string.rs b/src/utils/random_string.rs
index a1fd9f1..3d2614e 100644
--- a/src/utils/random_string.rs
+++ b/src/utils/random_string.rs
@@ -37,10 +37,12 @@ impl GenerateRandomStringInterface for GenerateRandomString {
 }
 
 impl GenerateRandomString {
+    pub fn new() -> GenerateRandomStringInterfaceObj {
+        Arc::new(GenerateRandomString)
+    }
     pub fn inject() -> impl FnOnce(&mut web::ServiceConfig) {
-        let g = WebGenerateRandomStringInterfaceObj::new(Arc::new(GenerateRandomString));
         let f = move |cfg: &mut web::ServiceConfig| {
-            cfg.app_data(g);
+            cfg.app_data(WebGenerateRandomStringInterfaceObj::new(Self::new()));
         };
 
         Box::new(f)
diff --git a/src/utils/uuid.rs b/src/utils/uuid.rs
index 7e0ccf7..213270b 100644
--- a/src/utils/uuid.rs
+++ b/src/utils/uuid.rs
@@ -28,10 +28,12 @@ impl GetUUID for GenerateUUID {
 }
 
 impl GenerateUUID {
+    pub fn new() -> GetUUIDInterfaceObj {
+        Arc::new(GenerateUUID)
+    }
     pub fn inject() -> impl FnOnce(&mut web::ServiceConfig) {
-        let g = WebGetUUIDInterfaceObj::new(Arc::new(GenerateUUID));
         let f = move |cfg: &mut web::ServiceConfig| {
-            cfg.app_data(g);
+            cfg.app_data(WebGetUUIDInterfaceObj::new(Self::new()));
         };
 
         Box::new(f)