I am building a small Java utility (using Jackson) to catch errors in Java files, and one part of it is a text area, in which you might paste some JSON context and it will tell you the line and column where it’s found it: I am using the error message to take out the line and column as a
Tag: json
Parse datetime with offset string to LocalDateTime
I am trying to parse following datetime String to LocalDateTimeObject, however I am not able to identify the format of the datetime string. Sat, 09 Oct 2021 02:10:23 -0400 How should I determine the pattern of the above string? Answer You should first check if the date string matches any of the Predefined Formatters. If not, then you have to
How to customize the internal server error message (error code : 500)
Consider a scenario where I want to create a record in database with the already existing ID. By doing this, we get “500-internal server error”. But I want to customize the message returned to “Id already exist, Cannot create record”. Below is the my sample existing code: Controller class : Service class : Postman Output : As in the above
Null Values are assigned as values for a list in POJO SpringBoot/Java
I have a POJO that will be reading the data from a Kafka Consumer. I have a couple of list objects inside it and I am not able to understand the Null behavior of it EmployeeEBO.java AssignedWorkEBO.java So I am trying to Check whether the data from kafka is Empty/Null condition for the AssignedWorkEBO and it behaves odd When the
Different @JsonProperty config for READ and WRITE on same field?
I have a class (which cannot be modified) like When deserializing I get data like: As I cannot modify the Standing class I have a mix-in like: As the received json does not have positionNumber and positionText fields I use the @JsonPropery annotations. With Access.READ_ONLY I simply ignore the positionNumber field. And with @JsonProperty(value = “position”, access = JsonProperty.Access.WRITE_ONLY) on
IllegalArgumentException: Unable to create @Body converter for class
Whenever I try to create a request with Retrofit it fails. The strange thing is that it worked before, I didn’t change anything about the code. Now months later it doesn’t work anymore. I’m getting the following error: IllegalArgumentException: Unable to create @Body converter for class apis.Config (parameter #2) I tried changing from Gson to Moshi but it didn’t solve
JSON.simple – How to correctly access nested JSON objects
Example of my json file is Right now I am able to get values from lenght, pool and weather. But I am stuck on how to access the nested array nested object trophy-name. My code is: This is my first time experimenting with json files so I am trying to play around with it so the code is not great.
Parse a json list into list of object Java
I have a response as follows I want to map this json to a POJO object and have created this class I am currently using this way to read this The size of events is 2 but each event is coming as null instead of a map. Can Someone please help me ? Answer To achieve your goal you have
Swap Jackson custom serializer / deserializer during runtime
I have the following system: I am sending MediaType.APPLICATION_JSON_VALUEs from spring controllers to my client and vice versa. I also have an export/import feature of my to-be-serialized classes. The JSON File is created by using an ObjectMapper and utilizing the writeValueAsString and readValue methods. I am reading from and writing into the json file. Both of those serialization paths currently
Matching JSON request body based on JSON Path with logical operators in WireMock
In WireMock I am trying to match the request based on the JSON body with path matchers as shown below. But it seems that the logical operators are not supported inside matchesJsonPath expression. Is this understanding correct? What could be a possible alternative solution? Any help will be appreciated, thanks! Answer Your assumption is incorrect. You can use operators inside