Please find this project on GITHUB as studentsbooks I am getting errror as below, even after following a proper tutorial. Kindly guide where i am going wrong. Feel free to clone the project. Committed Just now. Answer I created a class InsertInitialData class annotated as @Component and used WebApplicationCon…
Tag: spring-boot
Junit Force to throw Exception on method call
I am trying to throw the exception whenever simpleJdbcCall.execute(namedParameters) called but I see it is not throwing the error, is there something i am missing here ? Here is my class here is my Junit Class Answer When writing spring-boot integration test you should inject the mock beans using @MockBean an…
Getting Picocli to work with Springboot application
I have to convert a large Spring boot application into a flexible CLI tool, where the requests sent by the Spring boot application (among other things) are determined by user input at the command line. I decided to use picocli to implement the command line functionality, however I can’t figure out how t…
spring boot – integration test autowired interface no such bean found
I have a spring-boot app that now needs to support multiple Object stores and selectively use the desired store based on the environment. Essentially what i have done is create an interface that each store repository then implements. I have simplified the code for the examples. I have created 2 beans for each…
Springboot property typemismatch
I have a common issue and none of all the other similar questions on the forum helped me sofar. Pls bear with me, im still learning. l have a Spring boot app. Unfortunately the first property that I declare doesn’t work due to type mismatch from String to int. The other works just fine. my application.p…
How to run a gatling test from a java code and pass the url of test in parameters of simulation?
I want to be able to pass parameters to a Gatling Simulation from a java code and specially the url of test. I use Gatling with maven method. Someone help me please. Answer one way would be: for example, i need to pass the URL under the test http://127.0.0.1:5000 to pick this variable in scala code: and to ut…
Is it possibe to map a query with nested select statements to a DTO?
I have a query with nested select There is a DTO Class The method of new packageName.Result(a,b) in the query wont work here because of nested select, so what can be done here? Thanks in advance Answer The JPQL constructor expression is really just syntax sugar, so you could just as well transform the resulti…
Spring Data JPA- ignore parameter if it has a null value in between condition
I’m trying to write the following query Now it’s work fine but I want if fromDate is null to bring all data till toDate and if toDate is null to bring all data from selected date in fromDate till current date and if both are null to ignore the condition Answer You can try next pattern
Difference between connecting to a database using DriverManager and SpringBoot(Hibernate)
There are 2 ways to connect to a database when developing Java apps. Using DriverManager Connection conn = DriverManager.getConnection(url, name, password); // execute the query. Using application property file in SpringBoot spring.jpa.hibernate.ddl-auto=none spring.datasource.url=jdbc:mysql://localhost:5432/…
Is there a way to execute only some packages in SpringBoot?
I have a use case where I have a lot of services running in the same code base but they are in different packages. So, whenever I start SpringBoot all those services start. Is there a way I can specify SpringBoot to start the code in a particular package? Thanks in advance Answer you can use component scan an…