I am trying to implement the hello world web application using spring boot, gradle and tomcat by following “Building a RESTful Web Service” but have been unable to run make it run so far. The code is pretty much the same as the one provided on the website, I have wasted hours debugging it thinking…
Tag: spring-boot
How to update only the incoming fields in a model using spring data jpa?
I am using Spring data jpa for persistence. Say, I have to update a model. This model has ‘n’ number of fields along with a primary Key. Considering above json as a representation of my model, I want to update only those fields which are incoming in the json (primary key is Id which will always be…
Error creating bean with name ‘userController’ defined in file
i got Error creating bean with name ‘userController’ defined in file. Unfortunately, i’m new in Java and Spring at all so can’t understand how to fix all of this. In my class “UserController” class constructor and method is never used (actually i don’t know why too). …
Spring Boot JPA unknown column in field list
In MySQL I have script that create table In java class i have model to this table In Repository package In client site i try send in request login and password but i have error in server site ‘ That mean I should change my column name in MySQL table to account_id? Answer “That means I should chang…
The method toByteArray(InputStream) is undefined for the type IOUtils
I am working on spring boot.I have a method to return a file using byte array.while i am trying to return byteArray I got this error.my code is given below- Answer Very likely, you have imported the wrong IOUtils from tomcat (import org.apache.tomcat.util.http.fileupload.IOUtils;) Add Apache Commons IO depend…
java.lang.IllegalArgumentException referenced from a method is not visible from class loader
I obtained an exception when generated a stub for a WS service by wsimport in /target/class/….. and run a spring boot application with devtools. Caused by: java.lang.IllegalArgumentException: com….Service referenced from a method is not visible from class loader I found that an issue with spring d…
Parameter 0 of constructor in ….. Spring Boot
I have a problem when launch my app. Could somebody help me to solve this issue? GenericRepository GenericRepositoryImpl BookRepositorySearch BookService BookServiceImpl Answer From your previous comments, looks like you want to keep BookRepositorySearch as an interface. If that’s the case, you need to …
Spring boot read array from YAML (properties) file
This is my project structure and i have this in application.yml in my Endpoint i have the following in any function i can access something like System.out.println(hello) and its perfectly working but for the fileTypes its not even compiling and i receive this error : Error creating bean with name ‘confi…
Is Spring Framework used in a unit test?
I am getting ready to take my Spring Certification v5.0 and there appears to be a question: Do you use Spring in a unit test? Link to Exam Guide questions. From Spring reference guide I know this: The POJOs that make up your application should be testable in JUnit or TestNG tests, with objects simply instanti…
Spring unit test issue with Validator
I am trying to write unit test for a validator class that I have. So within my UniqueEmailValidator class, I injected a @Service component to check if it exist. And I tried to write unit test for this constraint validator. How do I initialize the AccountService within the Validator class? It seem like it wasn…