diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/ClassifierWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/ClassifierWebResource.java
index 884ce8c..94534f2 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/ClassifierWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/ClassifierWebResource.java
@@ -18,6 +18,7 @@
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
+import javax.ws.rs.Consumes;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
@@ -45,6 +46,7 @@
      */
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getClassifiers() {
 
         ObjectNode result = mapper().createObjectNode();
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FloatingIpWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FloatingIpWebResource.java
index c5ddb07..c2c4632 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FloatingIpWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FloatingIpWebResource.java
@@ -75,6 +75,7 @@
 
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response listFloatingIps() {
         Collection<FloatingIp> floatingIps = get(FloatingIpService.class)
                 .getFloatingIps();
@@ -87,6 +88,7 @@
     @GET
     @Path("{floatingIpUUID}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getFloatingIp(@PathParam("floatingIpUUID") String id,
                                   @QueryParam("fields") List<String> fields) {
 
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FlowClassifierWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FlowClassifierWebResource.java
index 10cb399..b3b2bcb 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FlowClassifierWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/FlowClassifierWebResource.java
@@ -59,6 +59,7 @@
      * @return 200 OK
      */
     @GET
+    @Consumes(MediaType.APPLICATION_JSON)
     @Produces(MediaType.APPLICATION_JSON)
     public Response getFlowClassifiers() {
         Iterable<FlowClassifier> flowClassifiers = get(FlowClassifierService.class).getFlowClassifiers();
@@ -81,6 +82,7 @@
      */
     @GET
     @Path("{flow_id}")
+    @Consumes(MediaType.APPLICATION_JSON)
     @Produces(MediaType.APPLICATION_JSON)
     public Response getFlowClassifier(@PathParam("flow_id") String id) {
         FlowClassifier flowClassifier = nullIsNotFound(get(FlowClassifierService.class)
@@ -154,6 +156,8 @@
      */
     @Path("{flow_id}")
     @DELETE
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response deleteFlowClassifier(@PathParam("flow_id") String id) {
         log.debug("Deletes flow classifier by identifier {}.", id);
         FlowClassifierId flowClassifierId = FlowClassifierId.of(id);
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortChainWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortChainWebResource.java
index d5948cc..8326f87 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortChainWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortChainWebResource.java
@@ -62,6 +62,7 @@
      */
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortChains() {
         Iterable<PortChain> portChains = get(PortChainService.class).getPortChains();
         ObjectNode result = mapper().createObjectNode();
@@ -83,6 +84,7 @@
     @GET
     @Path("{chain_id}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortPain(@PathParam("chain_id") String id) {
 
         PortChain portChain = nullIsNotFound(get(PortChainService.class).getPortChain(PortChainId.of(id)),
@@ -150,6 +152,8 @@
      */
     @Path("{chain_id}")
     @DELETE
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response deletePortPain(@PathParam("chain_id") String id) {
         log.debug("Deletes port chain by identifier {}.", id);
         PortChainId portChainId = PortChainId.of(id);
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairGroupWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairGroupWebResource.java
index 68fc6bd..28b14c7 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairGroupWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairGroupWebResource.java
@@ -64,6 +64,7 @@
      */
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortPairGroups() {
         Iterable<PortPairGroup> portPairGroups = get(PortPairGroupService.class).getPortPairGroups();
         ObjectNode result = mapper().createObjectNode();
@@ -85,6 +86,7 @@
     @GET
     @Path("{group_id}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortPairGroup(@PathParam("group_id") String id) {
         PortPairGroup portPairGroup = nullIsNotFound(get(PortPairGroupService.class)
                                                      .getPortPairGroup(PortPairGroupId.of(id)),
@@ -157,6 +159,8 @@
      */
     @Path("{group_id}")
     @DELETE
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response deletePortPairGroup(@PathParam("group_id") String id) {
         log.debug("Deletes port pair group by identifier {}.", id);
         PortPairGroupId portPairGroupId = PortPairGroupId.of(id);
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairWebResource.java
index 34bea37..22a7b4b 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/PortPairWebResource.java
@@ -62,6 +62,7 @@
      */
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortPairs() {
         Iterable<PortPair> portPairs = get(PortPairService.class).getPortPairs();
         ObjectNode result = mapper().createObjectNode();
@@ -83,6 +84,7 @@
     @GET
     @Path("{pair_id}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPortPair(@PathParam("pair_id") String id) {
         PortPair portPair = nullIsNotFound(get(PortPairService.class).getPortPair(PortPairId.of(id)),
                                            PORT_PAIR_NOT_FOUND);
@@ -149,6 +151,8 @@
      */
     @Path("{pair_id}")
     @DELETE
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response deletePortPair(@PathParam("pair_id") String id) {
 
         PortPairId portPairId = PortPairId.of(id);
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/RouterWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/RouterWebResource.java
index f8b87cc..855209c 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/RouterWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/RouterWebResource.java
@@ -83,6 +83,7 @@
 
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response listRouters() {
         Collection<Router> routers = get(RouterService.class).getRouters();
         ObjectNode result = new ObjectMapper().createObjectNode();
@@ -93,6 +94,7 @@
     @GET
     @Path("{routerUUID}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getRouter(@PathParam("routerUUID") String id,
                               @QueryParam("fields") List<String> fields) {
 
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
index e77358d..ca4f749 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/SubnetWebResource.java
@@ -75,6 +75,7 @@
 
     @GET
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response listSubnets() {
         Iterable<Subnet> subnets = get(SubnetService.class).getSubnets();
         ObjectNode result = new ObjectMapper().createObjectNode();
@@ -85,6 +86,7 @@
     @GET
     @Path("{subnetUUID}")
     @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getSubnet(@PathParam("subnetUUID") String id) {
 
         if (!get(SubnetService.class).exists(SubnetId.subnetId(id))) {
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
index cf17985..2b0cd3b 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/TenantNetworkWebResource.java
@@ -77,7 +77,8 @@
             .newConcurrentMap();
 
     @GET
-    @Produces({ MediaType.APPLICATION_JSON })
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getNetworks(@QueryParam("id") String queryId,
                                 @QueryParam("name") String queryName,
                                 @QueryParam("admin_state_up") String queryadminStateUp,
@@ -144,7 +145,8 @@
 
     @GET
     @Path("{id}")
-    @Produces({ MediaType.APPLICATION_JSON })
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getNetwork(@PathParam("id") String id) {
 
         if (!get(TenantNetworkService.class).exists(TenantNetworkId
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
index a635c11..1e1cc79 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/resources/VirtualPortWebResource.java
@@ -80,7 +80,8 @@
             .getLogger(VirtualPortService.class);
 
     @GET
-    @Produces({ MediaType.APPLICATION_JSON })
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getPorts() {
         Iterable<VirtualPort> virtualPorts = get(VirtualPortService.class)
                 .getPorts();
@@ -91,7 +92,8 @@
 
     @GET
     @Path("{id}")
-    @Produces({ MediaType.APPLICATION_JSON })
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
     public Response getportsById(@PathParam("id") String id) {
 
         if (!get(VirtualPortService.class).exists(VirtualPortId.portId(id))) {