diff --git a/announcement/tests.py b/announcement/tests.py
index c226597..0354306 100644
--- a/announcement/tests.py
+++ b/announcement/tests.py
@@ -1,4 +1,6 @@
-from utils.api.tests import APITestCase, APIClient
+from utils.api.tests import APITestCase
+
+from .models import Announcement
 
 
 class AnnouncementAdminTest(APITestCase):
@@ -16,6 +18,7 @@ class AnnouncementAdminTest(APITestCase):
     def test_create_announcement(self):
         resp = self.create_announcement()
         self.assertSuccess(resp)
+        return resp
 
     def test_edit_announcement(self):
         data = {"id": self.create_announcement().data["data"]["id"], "title": "ahaha", "content": "test content",
@@ -26,3 +29,9 @@ class AnnouncementAdminTest(APITestCase):
         self.assertEqual(resp_data["title"], "ahaha")
         self.assertEqual(resp_data["content"], "test content")
         self.assertEqual(resp_data["visible"], False)
+
+    def test_delete_announcemen(self):
+        id = self.test_create_announcement().data["data"]["id"]
+        resp = self.client.delete(self.url, data={'id': id})
+        self.assertSuccess(resp)
+        self.assertFalse(Announcement.objects.filter(id=id).exists())
diff --git a/announcement/views.py b/announcement/views.py
index 2cd1d0a..dbb3c6b 100644
--- a/announcement/views.py
+++ b/announcement/views.py
@@ -1,7 +1,7 @@
 from django.utils.translation import ugettext as _
 
 from account.decorators import super_admin_required
-from utils.api import APIView
+from utils.api import APIView, validate_serializer, IDOnlySerializer
 
 from .models import Announcement
 from .serializers import (CreateAnnouncementSerializer, AnnouncementSerializer,
@@ -9,42 +9,36 @@ from .serializers import (CreateAnnouncementSerializer, AnnouncementSerializer,
 
 
 class AnnouncementAdminAPI(APIView):
+    @validate_serializer(CreateAnnouncementSerializer)
     @super_admin_required
     def post(self, request):
         """
         publish announcement
         """
-        serializer = CreateAnnouncementSerializer(data=request.data)
-        if serializer.is_valid():
-            data = serializer.data
-            announcement = Announcement.objects.create(title=data["title"],
-                                                       content=data["content"],
-                                                       created_by=request.user)
-            return self.success(AnnouncementSerializer(announcement).data)
-        else:
-            return self.invalid_serializer(serializer)
+        data = request.data
+        announcement = Announcement.objects.create(title=data["title"],
+                                                   content=data["content"],
+                                                   created_by=request.user)
+        return self.success(AnnouncementSerializer(announcement).data)
 
+    @validate_serializer(EditAnnouncementSerializer)
     @super_admin_required
     def put(self, request):
         """
         edit announcement
         """
-        serializer = EditAnnouncementSerializer(data=request.data)
-        if serializer.is_valid():
-            data = serializer.data
-            try:
-                announcement = Announcement.objects.get(id=data["id"])
-            except Announcement.DoesNotExist:
-                return self.error(_("Announcement does not exist"))
+        data = request.data
+        try:
+            announcement = Announcement.objects.get(id=data["id"])
+        except Announcement.DoesNotExist:
+            return self.error(_("Announcement does not exist"))
 
-            announcement.title = data["title"]
-            announcement.content = data["content"]
-            announcement.visible = data["visible"]
-            announcement.save()
+        announcement.title = data["title"]
+        announcement.content = data["content"]
+        announcement.visible = data["visible"]
+        announcement.save()
 
-            return self.success(AnnouncementSerializer(announcement).data)
-        else:
-            return self.invalid_serializer(serializer)
+        return self.success(AnnouncementSerializer(announcement).data)
 
     @super_admin_required
     def get(self, request):
@@ -62,3 +56,9 @@ class AnnouncementAdminAPI(APIView):
         if request.GET.get("visible") == "true":
             announcement = announcement.filter(visible=True)
         return self.success(self.paginate_data(request, announcement, AnnouncementSerializer))
+
+    @validate_serializer(IDOnlySerializer)
+    @super_admin_required
+    def delete(self, request):
+        Announcement.objects.filter(id=request.data["id"]).delete()
+        return self.success()
diff --git a/utils/api/_serializers.py b/utils/api/_serializers.py
index 0e4884d..d048890 100644
--- a/utils/api/_serializers.py
+++ b/utils/api/_serializers.py
@@ -14,4 +14,8 @@ class DateTimeTZField(serializers.DateTimeField):
     def to_representation(self, value):
         self.format = "%Y-%-m-%d %-H:%-M:%-S"
         value = timezone.localtime(value)
-        return super(DateTimeTZField, self).to_representation(value)
\ No newline at end of file
+        return super(DateTimeTZField, self).to_representation(value)
+
+
+class IDOnlySerializer(serializers.Serializer):
+    id = serializers.IntegerField()
\ No newline at end of file
diff --git a/utils/api/api.py b/utils/api/api.py
index a8fd055..5141a87 100644
--- a/utils/api/api.py
+++ b/utils/api/api.py
@@ -1,6 +1,6 @@
-# coding=utf-8
 import json
 import logging
+import functools
 
 from django.http import HttpResponse, QueryDict
 from django.utils.decorators import method_decorator
@@ -31,7 +31,7 @@ class URLEncodedParser(object):
 
     @staticmethod
     def parse(body):
-        return QueryDict(body).dict()
+        return QueryDict(body)
 
 
 class JSONResponse(object):
@@ -127,10 +127,11 @@ class APIView(View):
         return data
 
     def dispatch(self, request, *args, **kwargs):
-        try:
-            request.data = self._get_request_data(self.request)
-        except ValueError as e:
-            return self.error(err="invalid-request", msg=str(e))
+        if self.request_parsers:
+            try:
+                request.data = self._get_request_data(self.request)
+            except ValueError as e:
+                return self.error(err="invalid-request", msg=str(e))
         try:
             return super(APIView, self).dispatch(request, *args, **kwargs)
         except Exception as e:
@@ -144,18 +145,6 @@ class CSRFExemptAPIView(APIView):
         return super(CSRFExemptAPIView, self).dispatch(request, *args, **kwargs)
 
 
-class SNServerAPIView(CSRFExemptAPIView):
-    def empty_response(self):
-        resp = HttpResponse()
-        resp["Content-Length"] = 0
-        return resp
-
-    def response(self, data):
-        resp = super(SNServerAPIView, self).response(data)
-        resp["Content-Length"] = len(resp.content)
-        return resp
-
-
 def validate_serializer(serializer):
     """
     @validate_serializer(TestSerializer)
@@ -163,6 +152,7 @@ def validate_serializer(serializer):
         return self.success(request.data)
     """
     def validate(view_method):
+        @functools.wraps(view_method)
         def handle(*args, **kwargs):
             self = args[0]
             request = args[1]
@@ -176,4 +166,4 @@ def validate_serializer(serializer):
 
         return handle
 
-    return validate
\ No newline at end of file
+    return validate