I want to implement retry mechanism and I did something like this: And used this method here: But I want to create a generic one to use it across all application to not write first method in all classes, how can I do this more efficiently? Answer The way that I decided to implement this is as follows: And cal…
Tag: spring
Spring 5 Oauth2 – How to provide the check token URL in my Resource server?
I need some help.. I set up an AuthorizationServer using @EnableAuthorizationServer from Spring-security-oauth2 for grant type “client_credentials”. Able to create, check tokens and everything good with this. /oauth/token /oauth/checkToken Followed this sample for Authorization server I have a sep…
Make Redis as optional
I am using spring boot with Redis.Redis is running as Docker container Redis is a memory DB, if it finds data in Redis based on the key, it retrieved from Redis otherwise go into actual db call. when Redis is running, code works fine. but sometimes for any reason, if Redis is down, I am getting exception Redi…
Failed to configure a DataSource: ‘url’ attribute is not specified using Spring Boot
this is a first time i am doing a simple spring boot crud i ran in to the problem with i don’t how to solve the problem I added in drivers correct way but I got the error pls solve this problem application.properties porm.xml Answer It seems that you failed to provide driver-class name. You can refer to…
Why are related entities being escaped when converted to JSON?
I have a Spring MVC controller which fetches some entities via a query. These entities have a related entity that is eagerly fetched. However, when I use JSONObject.toString() it escapes the related model data: The value in the language property is an escaped JSON object from the related entity. Why is it bei…
NoSuchBeanDefinitionException for NamedParameterJdbcTemplate in test class
I have a problem with running unit tests with JDBCTemplate in my spring boot application. I have the following code for configuration: and this is for repository class: that works by calling the Rest service from postman for example. I wrote this unit test to test only the repository part: but when i run the …
post data for foreign key in postman
this is my model class.There is foreign key from another table AssessmentProperties .now when iam posting the data with postman my data looks like this but my input should be looking like this can anyone say me what should i do for this? and by the way this is the controller for post method Answer Instead of …
How does java IoC framework ensure thread safety?
Recently I have read a great tutorial of Java Memory Model. It says JVM only guarantees the visibility of final field if no synchronization used. Then it occurs to me that when we use some IoC frameworks, we usually use setter injection/field injection which are not protected by final semantics. For example, …
Pass Thymeleaf block content as variable to fragment
I’m trying to create a fragment that represents a card with custom content. I would like to do something like: And then use as This would make it a lot easier to work with bigger html that would be kinda ugly to write in an attribute. (Basically I’m looking for a similar functionality to BladeR…
How do I access values from forms on different JSP pages in the same controller in Spring MVC?
I am trying to make a Book Management project where I have three buttons on the home.jsp page. Each button redirects to a separate page and each of these pages has a form. I have one Controller class that has three methods to handle each form submissions from each of these pages but when I try to use @ModelAt…