Category "spring"

Mono class in Java: what is, and when to use?

I have this following code: import org.springframework.http.MediaType; import org.springframework.stereotype.Component; import org.springframework.web.reactive

How to resolve the Exception from WebTestClient?

How can I achieve the following with WebTestClient? @Autowired private MockMvc mvc; mvc.perform(req) .andExpect(status) .andReturn().getResolve

Why I get 404 error in spring boot post request using Thymeleaf

I user spring boot to create an integral calculator. I got a strange 404 error while I try to handle post request. Here is my controller class that should handl

Exception in thread "main" java.time.DateTimeException: Invalid value for MonthOfYear (valid values 1 - 12): 0 when i am using Google Map jar

I am working on Geo Fencing So I am using Google Dependencies "android-maps-utils" and "geopackage-android-map" I installed these jar in my system and using t

Using Ribbon load balancing in spring cloud and autowiring the annotated interface

We are new to spring-cloud and struck with Ribbon Client dependencies. The code is working fine with FeignClient but using RibbonClient annotations resulting in

Use WebSphere MQ as the messaging layer for Springboot applications

I need to use WebSphere MQ as the messaging layer for my Springboot apps. Using RabbitMQ, Kafka or activeMQ is straight forward with Springboot and there are to

Using @TestConfiguration doesn't work as Context for @SpringBootTest

I've written an integration test that uses @SpringBootTest annotation. Since my app has many beans, I want to load in the integration test only the beans that a

Failed to convert from type [java.lang.Object[]] to type

I have spring web app (JPA/Hibernate + MySQL). I have two DAO classes. CustomerDAO @Entity @Table(name = "customers") public class Customer { @Id @Column

Spring cache and Spring data redis

Spring cache + Spring redis: Spring provides a caching abstraction package spring-boot-starter-cache which basically provides method level annotations to cache

@DataMongoTest is creating a null MongoTemplate

I have been trying to follow the instructions in the link below to try to add an automatically configured Embedded MongoDB Instance for Cucumber Integration tes

Caused by: com.jcraft.jsch.JSchException: connection is closed by foreign host while using DefaultSftpSessionFactory and SftpInboundFileSynchronizer

I am using spring batch remote partitioning to read input files and process them. To make input files available on all servers, I have added step listener which

How to generate form and crud using Spring and React

I want to dynamically generate crud form based on my API. I am using spring, spring-data-rest and spring-hateoas. I don't wan't to render react from java. I

SpringBoot Web MVC Application cannot resolve JSP views

I am trying to implement a web application using Springboot. but when I request methods I get 404 Error. Springboot cannot find Jsp files. this is my Controller

How to convert a multipart file to File?

Can any one tell me what is a the best way to convert a multipart file (org.springframework.web.multipart.MultipartFile) to File (java.io.File) ? In my spring

Junit (4.12) is not executing after spring-boot 2.6.2 migration

I have migrated from Spring to Spring-boot version 2.6.2. mvn clean install is successful but none of the junit(version 4.12) is executing. After few research I

Creating JPA session for background threads

We use Hibernate through JPA and Spring to manage object persistence in our web application. We use open-session-in-view pattern to create sessions for threads

Spring PreparedStatementCallback; uncategorized SQLException for SQL Invalid Column Type Oracle

I have migrated mysql database to oracle. When I used sql query with modification as with rownum as following, SELECT id, frameTypeId, ownerId, locationId FROM

Authorisation in microservices - how to approach domain object or entity level access control using ACL?

I am currently building microservices based system on java Spring Cloud. Some microservices use PostgreSQL and some of them MongoDB. REST and JMS is used for co

@EventListener for AuthenticationSuccessEvent or InteractiveAuthenticationSuccessEvent not fired

I have this listener in the context of Spring: package listeners; import java.util.Date; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.s

IllegalArgumentException: At least one JPA metamodel must be present

while starting with spring rest I got following error as > org.springframework.beans.factory.BeanCreationException: Error > creating bean with name 'jpaM