First, here are my entities. Player : Team : As many topics already stated, you can avoid the StackOverflowExeption in your WebService in many ways with Jackson. That’s cool and all but JPA still constructs an entity with infinite recursion to another entity before the serialization. This is just ugly a…
Spring Security 5 : There is no PasswordEncoder mapped for the id “null”
I am migrating from Spring Boot 1.4.9 to Spring Boot 2.0 and also to Spring Security 5 and I am trying to do authenticate via OAuth 2. But I am getting this error: java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id “null From the documentation of Spring Security 5, I get t…
Spring batch filtering data inside item reader
I’m writing a batch that reads log files which should take many types (format of log log file ) then I want to read every file based on some characters inside log files for example 15:31:44,437 INFO <NioProcessor-32> Send to <SLE- 15:31:44,437 INFO <NioProcessor-32> [{2704=5, 604=1, {0=02…
Can’t find Java folder in Program Files
I hate asking this, but I’ve never been able to find my Java folder on my current PC. I’d like to find it so I could use a keystore command to find my SHA and just to know where it is. I found a SHA number through gradlewindow/signing report, but now the api page isn’t accepting it so I want…
Android Espresso – Closing the SearchView
I’m working on Espresso tests for Android and for one of my actions I want to search a list using a SearchView, select an item and then navigate back to the previous screen (by closing the searchview and then pressing the up button). I’ve tried some things to access the up/collapse button of the S…
Spring MessageSource fallback to explicit locale
In some spring boot application, i18n is used. Here is the config: There is a requirement to obtain a locale from header Accept-language, falling back to “en” if: the header is missing, the header has wrong value, the config is missing for the locale. Two first points are resolved by provided Loca…
How can I use Spring scheduler to do some work at 0 a.m. in each time zone?
Just like the title , some task need to execute at 0 a.m. in each time zone, but @Scheduled annotation only support setting one zone, as shown below: I only can do task at 0 a.m. in “Asia/Shanghai”, how can I execute this task at each time zone? Can the Spring scheduler support or any other tool h…
Invoke private static method with MethodUtils from Apache commons-lang3
Is it possible to invoke a private static method with MethodUtils? This code throws the exception: If I change method’s access modifier to public it works. Answer No, because MethodUtils.invokeStaticMethod() calls Class.getMethod() under the hood. Even if you try to hack the modifier it won’t be v…
Snapping Effect in HorizontalScrollView
I want to achieve Snapping effect in HorizontalScrollView i.e when the user scrolls horizontally the item which is most visible (item visible > 50%) comes to the center. I tried to do this using: But the value is not constant even when we do not touch the screen. Here is some part of logcat: I’ve alr…
Spring MVC with hibernate validation doesn’t work
I have some problems with hibernate validations with Spring. I did everything as explained in an online tutorial, but it’s not working and I just go to the next page without validation error. Controller: customer-form.jsp So, there are no errors in BindingResult when I have an empty field for lastName. …