I have to parse a really huge JSON file (file size can get to several GBs), so I cannot just load the entire JSON String into the memory and parse it into an object, I have to somehow read the JSON …
No mapping for request with mockmvc
Currently struggling with problem when I get ‘mapping error for request’ with following controller/test configuration. Controller: Test: Configuration: After test execution I get No mapping for POST /subscriber/session The reason for the struggle is that my code from other modules with the same co…
OffsetDateTime always converted to UTC
I’m having a very simple spring boot app that gets and returns a timestamp. The code is as follow: Controller Model I’ve noticed that when I’m sending timezones which are not UTC the object I’m receiving converted into UTC – for example, the following call: has this response: Is …
JUnit 5 @EnabledIfSystemProperty doesn’t work as expected
I migrated my test from JUnit 4 to JUnit 5. All works fine but the translation of my previous annotation: @IfProfileValue(name = “run.import.tests”, values = {“true”}) into @…
Uploading mp4 from Android phone to Spring server results in file missing a few hundred bytes if bigger than 2MB
I have been trying to upload to a Java Spring server running on my laptop, using an app written in Xamarin forms, using a physical Redmi Android device. But when I send out the multi-part request, if it is bigger than about 2MB, the file loses a few hundred bytes by the time it reaches the server. For example…
Exception propagation in CompletableFuture (java)
How can I propagate exception encountered in the following code inside CompletableFuture.runAsync to my main thread? I want to catch the IllegalStateException in my main thread. Answer One option would be to create a Collection of Throwable objects and when the CompletableFuture completes you can add the exce…
Unrecognized character in the output stream while connecting network device using SSH
I got some unrecognised character in the output stream while connecting network device using SSH, But when I connect through putty, it shows a blank area instead of those unrecognised characters? Can …
Which HTTP status code is correct for Subscription cancel exception?
Which HTTP status code is correct for Subscription Canceled exception? I need to throw an exception when the user tries to accesses a certain page. I checked a few statuses like Payment Required, but it’s not satisfying the requirement. Any suggestion? Answer Which HTTP status code is correct for Subscr…
Repeatedly filter a response using Spring WebClient
I’m new to Spring and even newer to WebClient. I want to filter the body of a Get response repeatedly with one second intervals for 2 minute duration using Springs’ WebClient. I’m performing a get request which returns an empty JSON list of strings. At some moment of time the body is going t…
Second Line in an Apache-POI chart with seperate axis
Hi this code taken from the answer here is working as expected, but I want exactly the same Chart but in an Excel-Sheet So I modified the code like this to get an XLSX document, but the Chart isn’t the same Answer The problem is that for a Word (XWPF) chart, the data are stored in a Excel workbook which