I have a jar file that contains a java class HelloService with @Service annotation. I would like to Autowire it into my a @Component class GoodByeComponent that I am writing (autowire into the constructor). So, the skeleton for HelloService could look something like this: And the GoodByeComponent would look l…
Tag: spring
How to properly use 3 – layers architerchture in Spring MVC – Java
I come before you with a confusion that, perhaps, you can clarify to me. I’m learning now how to use 3-layers architecture with Spring MVC (using Repository, Service, Controllers), but I don’t understand the following things and how I should do it: -Service Layer, here, I do not understand, the me…
How to hide/show thymeleaf fields based on controller condition?
I have a Spring MVC application with thymeleaf. Depending on a condition tested in the controller method I want to show or hide an html element from the view (input, span, div, button…). How to do that? For instance, in asp.net you can do myButton.Visible = false (or true) if you want or don’t wan…
Spring Boot – having all autowired config variables in one class
I am working on a microservice in Spring Boot, and I have a common configuration class where I store all the config variabes that I got from application.properties file. It looks something like this: Config.java Then whenever I need these variables in other classes, I autowire Config.java class, and simply us…
Error creating bean with name ‘liquibase’ in Spring Boot App
I have difficulties with adding Liquibase to my existing Spring Boot application. I added the necessary dependency in pom.xml. Then I have added an empty changelog-master.xml file Here is the code: http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.4.xsd”> But when I run the program I got an e…
How to set JBoss Wildfly context root with XML-less Spring web application?
Having a Spring application with Maven where all the configuration is done in Java (all configuration previously stored in web.xml is now in annotated @Configuration files or in WebAppInitializer that extends AbstractAnnotationConfigDispatcherServletInitializer), how can I set the context root for my applicat…
Join tables in spring data jpa
I have an issue in joining two tables column. I have two entities Status Report and Employee. and I want the data of employee inside StatusReport. Another class is the employee: As you can see employee entity itself have some other joins on other tables. Which is a deparment table. When I join Status Report w…
using spring boot data redis template get a null pointer error
config: use: and this always get a error, warn stack trace is: I just want to use spring boot date redis to do some CRUD operations like template<String, Object>. please help me Answer Field injection can’t happen until after the constructor is already finished. Make the template a constructor par…
Field authenticationManager in service.SecurityServiceImpl required a bean of type ‘org.springframework.security.authentication.AuthenticationManager’
I am new to Spring Boot and trying to implement whatever I’ve learned from this link: login-registration-feature. My aim is to build a user login and registration feature but i’m stuck with this error: My folder structure, code is same as the one mentioned in the link. But couldn’t figure ou…
How to print in console in Spring MVC application(Dynamic web project)?
I have a Dynamic Web app in Eclipse which has a normal Controller, Entity and a DAO class. I am using Hibernate to get the data from the database and then displaying it in JSP page. But when I try to use System.out.print(); in Controller class to see weather my data is being fetched from the database it is no…