How do I get Jackson’s XMLMapper to set the name of the root xml element when serializing? There’s an annotation to do it, if you’re serializing a pojo: @XmlRootElement(name=”blah”). But I’m serializing a generic Java class, LinkedHashMap, so I can’t use an annotation…
Tag: jackson
deserialization of a json array to a list and retaining the array order from json within list
I have the following json that is mapped to a POJO using Jackson mapper. How do I retain the order of array columns from json during deserialization ? What annotation should I use ? JSON: } POJO: } Expected getColumnNames(): {“FirstName”,”LastName”,”UserName”} Actual getCol…
Jackson Json Deserialisation: Unrecognized field “…” , not marked as ignorable
I’m getting the following error and no resolution i found did the trick for me: Unrecognized field “GaugeDeviceId” (Class GaugeDevice), not marked as ignorable The problem seems, that the service returns the property names with a leading upper letter, while the class properties begin with a …
JAXB Mapping to JSON
I have written a JAX-RS (Jersey) REST Service, which accepts XML messages of ONIX XML format. Generally, I have generated all the required classes for JAXB binding from the given schema with xjc. There are more than 500 classes overall and I cannot modify them. Now, when I have a JAXB-mapped object, I need to…
Jackson read json in generic List
I’m using Jackson in order to read json messages. One of the values that I’ trying to parse is a List and another value contains the type of the data in the list. This is the structure i ‘ve created in java. Through Class.forName(); I can get the class which represents the data in the list. …
Is there a global Jackson setting for @JsonIgnoreProperties(unknown=true)?
Is there a global Jackson setting/configuration so that I do not have to annotate every class with @JsonIgnoreProperties(unknown=true)? Answer This should do the job: See the APIs for ObjectMapper and DeserializationFeature for more information.
Ignoring property when deserializing
I have a simple interface with getter and setter for a property. I have another class UserAccount which implements this interface. My problem is that I want to serialize the money property but ignore while deserializing it i.e., dont accept any values from the user for this property. I have tried @JsonIgnore …
Casting LinkedHashMap to Complex Object
I’ve got an application that stores some data in DynamoDB using Jackson to marshall my complex object into a JSON. For example the object I’m marshalling might look like this: Where SomeObject might look like this: and SomeOtherObject might look like this: This is fine an the object gets marshalle…
Convert JSON String to Pretty Print JSON output using Jackson
This is the JSON string I have: I need to convert the above JSON String into Pretty Print JSON Output (using Jackson), like below: Can anyone provide me an example based on my example above? How to achieve this scenario? I know there are lot of examples, but I am not able to understand those properly. Any hel…
Cannot construct instance of – Jackson
I am using Jackson and I’m having problems, when I try to deserialize an Object I get the following error: I am having problems in the attribute: Could anyone help me? Answer You cannot instantiate an abstract class, Jackson neither. You should give Jackson information on how to instantiate MyAbstractCl…