avoid null pointer exception

src/main/java/com/ctrip/zeus/restful/resource/GroupResource.java

@@ -301,7 +301,11 @@ public class GroupResource {
     public Response add(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody,
                         @QueryParam("force") Boolean force) throws Exception {
         ExtendedView.ExtendedGroup extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedGroup.class);
-        Group g = ObjectJsonParser.parse(requestBody, Group.class).setVirtual(null);
+        Group g = ObjectJsonParser.parse(requestBody, Group.class);
+        if (g == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to group.");
+        }
+        g.setVirtual(null);
         trim(g);
 
         Long checkId = groupCriteriaQuery.queryByName(g.getName());
@@ -342,7 +346,11 @@ public class GroupResource {
     public Response addVGroup(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody,
                               @QueryParam("force") Boolean force) throws Exception {
         ExtendedView.ExtendedGroup extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedGroup.class);
-        Group g = ObjectJsonParser.parse(requestBody, Group.class).setVirtual(true);
+        Group g = ObjectJsonParser.parse(requestBody, Group.class);
+        if (g == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to virtual group.");
+        }
+        g.setVirtual(true);
         trim(g);
 
         Long checkId = groupCriteriaQuery.queryByName(g.getName());
@@ -423,7 +431,11 @@ public class GroupResource {
     public Response update(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody,
                            @QueryParam("force") Boolean force) throws Exception {
         ExtendedView.ExtendedGroup extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedGroup.class);
-        Group g = ObjectJsonParser.parse(requestBody, Group.class).setVirtual(null);
+        Group g = ObjectJsonParser.parse(requestBody, Group.class);
+        if (g == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to group.");
+        }
+        g.setVirtual(null);
         trim(g);
 
         IdVersion[] check = groupCriteriaQuery.queryByIdAndMode(g.getId(), SelectionMode.OFFLINE_FIRST);
@@ -472,7 +484,11 @@ public class GroupResource {
     public Response updateVGroup(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody
             , @QueryParam("force") Boolean force) throws Exception {
         ExtendedView.ExtendedGroup extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedGroup.class);
-        Group g = ObjectJsonParser.parse(requestBody, Group.class).setVirtual(true);
+        Group g = ObjectJsonParser.parse(requestBody, Group.class);
+        if (g == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to virtual group.");
+        }
+        g.setVirtual(true);
         trim(g);
 
         DistLock lock = dbLockFactory.newLock(g.getId() + "_updateGroup");

src/main/java/com/ctrip/zeus/restful/resource/SlbResource.java

@@ -173,6 +173,9 @@ public class SlbResource {
     public Response add(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody) throws Exception {
         ExtendedView.ExtendedSlb extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedSlb.class);
         Slb s = ObjectJsonParser.parse(requestBody, Slb.class);
+        if (s == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to slb.");
+        }
         trim(s);
 
         s = slbRepository.add(s);
@@ -207,6 +210,9 @@ public class SlbResource {
     public Response update(@Context HttpHeaders hh, @Context HttpServletRequest request, String requestBody) throws Exception {
         ExtendedView.ExtendedSlb extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedSlb.class);
         Slb s = ObjectJsonParser.parse(requestBody, Slb.class);
+        if (s == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to slb.");
+        }
         trim(s);
 
         IdVersion[] check = slbCriteriaQuery.queryByIdAndMode(s.getId(), SelectionMode.OFFLINE_FIRST);

src/main/java/com/ctrip/zeus/restful/resource/VirtualServerResource.java

@@ -179,6 +179,9 @@ public class VirtualServerResource {
                                      @Context HttpServletRequest request, String requestBody) throws Exception {
         ExtendedView.ExtendedVs extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedVs.class);
         VirtualServer vs = ObjectJsonParser.parse(requestBody, VirtualServer.class);
+        if (vs == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to virtual server.");
+        }
         trim(vs);
 
         vs = virtualServerRepository.add(vs);
@@ -233,6 +236,9 @@ public class VirtualServerResource {
                                         @Context HttpServletRequest request, String requestBody) throws Exception {
         ExtendedView.ExtendedVs extendedView = ObjectJsonParser.parse(requestBody, ExtendedView.ExtendedVs.class);
         VirtualServer vs = ObjectJsonParser.parse(requestBody, VirtualServer.class);
+        if (vs == null) {
+            throw new ValidationException("Invalid post entity. Fail to parse json to virtual server.");
+        }
         trim(vs);
 
         IdVersion[] check = virtualServerCriteriaQuery.queryByIdAndMode(vs.getId(), SelectionMode.OFFLINE_FIRST);