修改大数据上传时数据格式非法无法序列化的容错

review by yincheng

@@ -73,6 +73,15 @@
     NSError *error = nil;
     NSMutableDictionary *actualParameters = [NSMutableDictionary dictionaryWithDictionary:parameters];
     
+    BOOL isValid = [NSJSONSerialization isValidJSONObject:actualParameters];
+    if (!isValid) { //校验上传数据格式合法性，如果不是合法的json格式，不再上传并删除本地文件，故返回YES
+        YALog(@"upload data dictionary is not valid json object");
+        if (block) {
+            block(YES, nil);
+        }
+        return nil;
+    }
+    
     NSData *jsonData = [NSJSONSerialization dataWithJSONObject:actualParameters options:0 error:&error];
     if (error) {
         YALog(@"json parsing, connot convert to json for: %@\n code: %zd\n reason: %@", actualParameters, [error code], [error localizedDescription]);
@@ -177,7 +186,14 @@
 {
     NSError *error = nil;
     NSMutableDictionary *actualParameters = [NSMutableDictionary dictionaryWithDictionary:parameters];
-    
+    BOOL isValid = [NSJSONSerialization isValidJSONObject:actualParameters];
+    if (!isValid) { //校验上传数据格式合法性，如果不是合法的json格式，返回错误
+        YALog(@"upload data dictionary is not valid json object");
+        if (block) {
+            block(NO, nil);
+        }
+        return nil;
+    }
     NSData *jsonData = [NSJSONSerialization dataWithJSONObject:actualParameters options:0 error:&error];
     if (error) {
         YALog(@"json parsing, connot convert to json for: %@\n code: %ld\n reason: %@", actualParameters, (long)[error code], [error localizedDescription]);