I have recently explored handling JSON data with the org.json library and all went well. Now I started a bigger Maven project, for which I intend to use the Jackson libraries in stead. Sadly, it does not seem to work for me. I wanted to try out the ObjectMapper class, that VScode autocompleted for me, which also automatically adds the
How to use getIntExtra value as an array index in next activity
So I have a listview that shows 5 chapters of the book of James from the Bible. As the user chooses the chapter he wants to read, the verses from the chapter will show. What I’m trying to do is to get position value from JamesChapter.java to be passed to the next activity Bible.java and use that value as an
When is a @JsonCreator method required for parsing?
When I try to parse the following object: I get the error And I solved this by adding a creator to the User class like this: This works fine. So now I go and parse the following object: and I don’t get an error… why? why it doesn’t require me to use a constructor here? Here’s the class where the
JsonMappingException when reading the response from RestTemplate
Seeing the exception when I call the GET method in RestTemplate com.fasterxml.jackson.databind.JsonMappingException: N/A at [Source: (StringReader); line: 1, column: 13700] (through reference chain: com.homedepot.merch.meter.model.ResultSet[“issues”]->java.util.ArrayList->com.homedepot.merch.meter.model.Issue[“fields”]) the sample java code is java classses are and the Issue class definition is How do I fix this JsonMappingException? Answer You are trying to serialize the result of a method that returns void. Also, I
How to write common pojo deserializer for json attribute which can be an object and an array both?
Background: I am getting mismatchedInputException, when parsing json. com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type java.util.ArrayList<Data> from Object value (token JsonToken.START_OBJECT) Problem: nodes is a json-array which contains data, which can be either json-object or json-array . I need to represent this correctly in POJO. Things Tried: Map<String, Object>, List, ,@JsonDeserialize(using = NodeDeserializer.class) Below is my nested json document for ref.
Jackson serializing: Get list of processed objects
For a special case, I need to know which “source objects” of the object tree Jackson processed during serialization. I think there is some internal list, because Jackson might reuse already serialized objects if they are referenced multiple times in the object tree. Can I get this list? Or is it possible to build my own list by an event
How to store server TOKEN and use it on my 2nd activity webview?
Hi im stuck with how to store server TOKEN to the Shared Preferences and use it on 2nd activity, anyone help? these my coding on 1st activity tried this, but didnt found any token stored on my shared preferences. any suggestion? Answer You can replace the “obj.optString(“login_token”)” with a simple string like “token” and it should work fine. For example:
How to access json array in url that needs bearer token and display in android studio?
Hello stackoverflow community!! How do I access a JSON array in this URL “https://api.json-generator.com/templates/z0aMAeTBHKq3/data” token is “2oof0bzpgllll2a8k2fmmh6aaykeu8yptztdzke7” but when I display the data in an Activity, it just displays blank and exits the app. But When I change the URL without an auth/bearer token I can see the displayed data in the URL. So my question: is how do I
Uploading json content on s3 using presigned url – gzipped
On the backend i’m generating a presigned url to upload a json object to an s3 bucket. I want the body actual json to be compressed. This is what i’m doing in the backend: Now, in postman, I manually add the content-encoding: gzip header and the file gets uploaded Issues: 1. If i go to the aws console and try
Nested JSON in JSON
How can I form JSON like that: I tried creating models with one-to-one, many-to-one relationships. Controller: But I got I read about creating nodes, but didn’t understand, how integrate it with spring data. What i need to nest table Comments in table Tutorials? Answer Looks to me as if you are pretty close to the desired outcome. First of all