I’m testing an API and get all data from the DB. I save the response as I get a json as response. I want to get the length of json array. So, if I have 2 rows in DB, I want to get 2 as a result. Or is there maybe another way to count number of rows which are
Tag: json
Deserialize JSON date format to ZonedDateTime using objectMapper
Background I have the following JSON (message from Kafka) I have the following (JSON schema generated) POJO (I cannot change the POJO as it is shared resource in the company) Our application is a Spring Boot application which reads the JSON message (1) from Kafka using Spring Cloud Stream and uses the POJO (2) and then does stuff with it.
Dynamically choosing which class to create object of from json
I have an interesting problem that I’m having trouble coming up with a clean solution for. My application reads collections of json objects that it needs to deserialize to this or that class type based on a field in the json itself. I have no control over the json structure or how it gets to my application. I’ve created models
JavaJSON: UnrecognizedPropertyException: Unrecognized field “CefMessagesGenerators” error
I have the following Json and corresponding Java classes. Could you please check it out and advise why do I get this exception? Is it because I added another and the (partial) json is: (Unfortunately I had to add the json image instead as text here because the system claims “I have the following Json and corresponding Java classes.”…) Answer
java.lang.NoSuchMethodError: org.json.JSONObject.(Ljava/lang/Object;)V
I have a basic SpringBoot 2.1.5.RELEASE app. Using Spring Initializer, JPA, embedded Tomcat, Thymeleaf template engine, and package as an executable JAR file with some RestControllers. In 1 of the controller this is the body I send: so I create this class to send it as a RequestBody: and public class HotelswitchHotelOrderRequestBody { and But i have this error: pom.xml:
How can I create the Table and insert the json data by using JAVA in CQL?
I am the new learner in CQL. I am using the docker env to run the Cassandra. In previous, I have the two tables(restaurants and Inspection) with inserted the data by csv and the following setting: Since join method are not supported in CQL, I need to re-insert the joined data set(JSON) to a new table(call InspectionrestaurantNY). Therefore, I tried
Unable to use custom HttpMessageNotReadableException error message in Spring Boot
I’m currently trying to provide custom messages for exceptions, but ran into an issue with HttpMessageNotReadableException. I have an ErrorDetails class: I also have a custom exception handler: But when i try to post a bad request, for example, with a field that should have a integer value I pass a string in the JSON it still returns the default
Getting null values while mapping a JSON to POJO
I am trying to map a JSON to POJO using Jackson. However, as this JSON contains a nested map of objects, when i de-serialize it to the POJO, the timeseries information is not converted to the POJO. I am only able to get the metadata part and the date part in the timeseries block. The other fields in the timeseries
How to deserialize from Number value to int (error – no int/Int-argument constructor/factory method to deserialize from Number value)
I have two classes Flight and Ticket. One flight can has lots of tickets, so Ticket has foreign key flight_id. Here is my database with tables flight and ticket. Here is my json request (from Mozilla debugger), which I want to save in the database. You can see flight_id parameter, but I can’t save it to my database, I’ve got
Parse JSON Data using POJO, Where key name is numeric
I’m trying to parse a special JSON data using Wrapper class, special means a JSON which have numeric keys like below : I know how to parse JSON data using POJO, But in this case java is not accepting the numeric as Keys. Wrapper/POJO Class I don’t want to go with JSON object based parsing. Is Anyone have any idea