diff --git a/interfaces/kits/js/src/common/ani_helper/ani_signature.cpp b/interfaces/kits/js/src/common/ani_helper/ani_signature.cpp
index f8a2a92debbfdf077663d6197e7c20acad3f5c09..a523304295ac487241d5f48c223cbd773150d52d 100644
--- a/interfaces/kits/js/src/common/ani_helper/ani_signature.cpp
+++ b/interfaces/kits/js/src/common/ani_helper/ani_signature.cpp
@@ -128,6 +128,14 @@ const string FS::WriteStream::ctorSig = Builder::BuildSignatureDescriptor({ Buil
 const Type FS::AtomicFile::classType = Builder::BuildClass("@ohos.file.fs.fileIo.AtomicFile");
 const string FS::AtomicFile::classDesc = FS::AtomicFile::classType.Descriptor();
 const string FS::AtomicFile::ctorSig = Builder::BuildSignatureDescriptor({ BuiltInTypes::stringType });
+// FS::ReadStreamOptionsInner
+const Type FS::ReadStreamOptionsInner::classType = Builder::BuildClass("@ohos.file.fs.WriteStreamOptionsInner");
+const string FS::ReadStreamOptionsInner::classDesc = FS::ReadStreamOptionsInner::classType.Descriptor();
+const string FS::ReadStreamOptionsInner::ctorSig = Builder::BuildSignatureDescriptor({ BuiltInTypes::stringType });
+// FS::WriteStreamOptionsInner
+const Type FS::WriteStreamOptionsInner::classType = Builder::BuildClass("@ohos.file.fs.fileIo.ReadStream");
+const string FS::WriteStreamOptionsInner::classDesc = FS::WriteStreamOptionsInner::classType.Descriptor();
+const string FS::WriteStreamOptionsInner::ctorSig = Builder::BuildSignatureDescriptor({ BuiltInTypes::stringType });
 // FS::LocationType
 const Type FS::LocationType::classType = Builder::BuildClass("@ohos.file.fs.fileIo.LocationType");
 const string FS::LocationType::classDesc = FS::LocationType::classType.Descriptor();
diff --git a/interfaces/kits/js/src/common/ani_helper/ani_signature.h b/interfaces/kits/js/src/common/ani_helper/ani_signature.h
index 3938f3fb85e10d82ecb19701ace14276ad983376..75e3ec0aca1aa9683b50b01888ba8bf890b81e57 100644
--- a/interfaces/kits/js/src/common/ani_helper/ani_signature.h
+++ b/interfaces/kits/js/src/common/ani_helper/ani_signature.h
@@ -200,6 +200,18 @@ struct AtomicFile : public BaseType {
     static const string ctorSig;
 };
 
+struct ReadStreamOptionsInner : public BaseType {
+    static const Type classType;
+    static const string classDesc;
+    static const string ctorSig;
+};
+
+struct WriteStreamOptionsInner : public BaseType {
+    static const Type classType;
+    static const string classDesc;
+    static const string ctorSig;
+};
+
 } // namespace FS
 
 namespace Impl {
diff --git a/interfaces/kits/js/src/mod_fs/class_randomaccessfile/ani/randomaccessfile_ani.cpp b/interfaces/kits/js/src/mod_fs/class_randomaccessfile/ani/randomaccessfile_ani.cpp
index 604835791b9fe812fe42c9d0160c3b0bd6220bd0..c8c104f723fc702f379457ce191f7d3b54b42e6f 100644
--- a/interfaces/kits/js/src/mod_fs/class_randomaccessfile/ani/randomaccessfile_ani.cpp
+++ b/interfaces/kits/js/src/mod_fs/class_randomaccessfile/ani/randomaccessfile_ani.cpp
@@ -283,31 +283,34 @@ static ani_string GetFilePath(ani_env *env, const int fd)
 
 static ani_object CreateReadStreamOptions(ani_env *env, int64_t start, int64_t end)
 {
-    static const char *className = "L@ohos/file/fs/ReadStreamOptionsInner;";
+    auto classDesc = FS::ReadStreamOptionsInner::classDesc.c_str();
     ani_class cls;
-    if (ANI_OK != env->FindClass(className, &cls)) {
-        HILOGE("Cannot find class %s", className);
+    if (ANI_OK != env->FindClass(classDesc, &cls)) {
+        HILOGE("Cannot find class %s", classDesc);
         return nullptr;
     }
+
+    auto ctorDesc = FS::ReadStreamOptionsInner::ctorDesc.c_str();
+    auto ctorSig = FS::ReadStreamOptionsInner::ctorSig.c_str();
     ani_method ctor;
-    if (ANI_OK != env->Class_FindMethod(cls, "<ctor>", ":V", &ctor)) {
-        HILOGE("Cannot find constructor method for class %s", className);
+    if (ANI_OK != env->Class_FindMethod(cls, ctorDesc, ctorSig, &ctor)) {
+        HILOGE("Cannot find constructor method for class %s", classDesc);
         return nullptr;
     }
     ani_object obj;
     if (ANI_OK != env->Object_New(cls, ctor, &obj)) {
-        HILOGE("New %s obj Failed", className);
+        HILOGE("New %s obj Failed", classDesc);
         return nullptr;
     }
 
     ani_field startField = nullptr;
     ani_field endField = nullptr;
     if (ANI_OK != env->Class_FindField(cls, "start", &startField)) {
-        HILOGE("Cannot find start in class %s", className);
+        HILOGE("Cannot find start in class %s", classDesc);
         return nullptr;
     }
     if (ANI_OK != env->Class_FindField(cls, "end", &endField)) {
-        HILOGE("Cannot find end in class %s", className);
+        HILOGE("Cannot find end in class %s", classDesc);
         return nullptr;
     }
 
@@ -326,31 +329,35 @@ static ani_object CreateReadStreamOptions(ani_env *env, int64_t start, int64_t e
 
 static ani_object CreateWriteStreamOptions(ani_env *env, int64_t start, int flags)
 {
-    static const char *className = "L@ohos/file/fs/WriteStreamOptionsInner;";
+    auto classDesc = FS::WriteStreamOptionsInner::classDesc.c_str();
     ani_class cls;
-    if (ANI_OK != env->FindClass(className, &cls)) {
-        HILOGE("Cannot find class %s", className);
+    if (ANI_OK != env->FindClass(classDesc, &cls)) {
+        HILOGE("Cannot find class %s", classDesc);
         return nullptr;
     }
+
+    auto ctorDesc = FS::WriteStreamOptionsInner::ctorDesc.c_str();
+    auto ctorSig = FS::WriteStreamOptionsInner::ctorSig.c_str();
     ani_method ctor;
-    if (ANI_OK != env->Class_FindMethod(cls, "<ctor>", ":V", &ctor)) {
-        HILOGE("Cannot find constructor method for class %s", className);
+    if (ANI_OK != env->Class_FindMethod(cls, ctorDesc, ctorSig, &ctor)) {
+        HILOGE("Cannot find constructor method for class %s", classDesc);
         return nullptr;
     }
+
     ani_object obj;
     if (ANI_OK != env->Object_New(cls, ctor, &obj)) {
-        HILOGE("New %s obj Failed", className);
+        HILOGE("New %s obj Failed", classDesc);
         return nullptr;
     }
 
     ani_field modeField = nullptr;
     ani_field startField = nullptr;
     if (ANI_OK != env->Class_FindField(cls, "mode", &modeField)) {
-        HILOGE("Cannot find mode in class %s", className);
+        HILOGE("Cannot find mode in class %s", classDesc);
         return nullptr;
     }
     if (ANI_OK != env->Class_FindField(cls, "start", &startField)) {
-        HILOGE("Cannot find start in class %s", className);
+        HILOGE("Cannot find start in class %s", classDesc);
         return nullptr;
     }
 
@@ -364,20 +371,24 @@ static ani_object CreateWriteStreamOptions(ani_env *env, int64_t start, int flag
 
 static ani_object CreateReadStream(ani_env *env, ani_string filePath, ani_object options)
 {
-    static const char *className = "L@ohos/file/fs/fileIo/ReadStream;";
+    auto classDesc = FS::ReadStream::classDesc.c_str();
     ani_class cls;
-    if (ANI_OK != env->FindClass(className, &cls)) {
-        HILOGE("Cannot find class %s", className);
+    if (ANI_OK != env->FindClass(classDesc, &cls)) {
+        HILOGE("Cannot find class %s", classDesc);
         return nullptr;
     }
+
+    auto ctorDesc = FS::ReadStream::ctorDesc.c_str();
+    auto ctorSig = FS::ReadStream::ctorSig.c_str();
     ani_method ctor;
-    if (ANI_OK != env->Class_FindMethod(cls, "<ctor>", "Lstd/core/String;L@ohos/file/fs/ReadStreamOptions;:V", &ctor)) {
-        HILOGE("Cannot find constructor method for class %s", className);
+    if (ANI_OK != env->Class_FindMethod(cls, ctorDesc, ctorSig, &ctor)) {
+        HILOGE("Cannot find constructor method for class %s", classDesc);
         return nullptr;
     }
+
     ani_object obj;
     if (ANI_OK != env->Object_New(cls, ctor, &obj, filePath, options)) {
-        HILOGE("New %s obj Failed", className);
+        HILOGE("New %s obj Failed", classDesc);
         return nullptr;
     }
 
@@ -386,21 +397,24 @@ static ani_object CreateReadStream(ani_env *env, ani_string filePath, ani_object
 
 static ani_object CreateWriteStream(ani_env *env, ani_string filePath, ani_object options)
 {
-    static const char *className = "L@ohos/file/fs/fileIo/WriteStream;";
+    auto classDesc = FS::WriteStream::classDesc.c_str();
     ani_class cls;
-    if (ANI_OK != env->FindClass(className, &cls)) {
-        HILOGE("Cannot find class %s", className);
+    if (ANI_OK != env->FindClass(classDesc, &cls)) {
+        HILOGE("Cannot find class %s", classDesc);
         return nullptr;
     }
+
+    auto ctorDesc = FS::WriteStream::ctorDesc.c_str();
+    auto ctorSig = FS::WriteStream::ctorSig.c_str();
     ani_method ctor;
-    if (ANI_OK !=
-        env->Class_FindMethod(cls, "<ctor>", "Lstd/core/String;L@ohos/file/fs/WriteStreamOptions;:V", &ctor)) {
-        HILOGE("Cannot find constructor method for class %s", className);
+    if (ANI_OK != env->Class_FindMethod(cls, ctorDesc, ctorSig, &ctor)) {
+        HILOGE("Cannot find constructor method for class %s", classDesc);
         return nullptr;
     }
+
     ani_object obj;
     if (ANI_OK != env->Object_New(cls, ctor, &obj, filePath, options)) {
-        HILOGE("New %s obj Failed", className);
+        HILOGE("New %s obj Failed", classDesc);
         return nullptr;
     }