I’ve been going through my head the best way to design a JSON API using Spring MVC. As we all know IO is expensive, and thus I don’t want to make the client make several API calls to get what they need. However at the same time I don’t necessarily want to return the kitchen sink. As an examp…
Tag: spring
How to inject property value using @Value into static fields
I have one property file config.properties which is configured using spring property placeholder. This is how it’s configured in my spring configuration file: Now I need to set its value to static field using @Value annotation. How can I achieve this? Answer The only way is to use setter for this value …
Spring Batch Item Reader is executing only once
Trying to implement Spring batch,but facing a strange problem,Our ItemReader class is executing only once. Here below is the detail. If we have 1000 rows in DB. Our Item reader fetch 1000 rows from DB,and pass list to ItemWriter ItemWriter successfully delete all items. Now ItemReader again tries to fetch the…
Spring/Java org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [C:launchCodeFilessrcmainjavaRunMario.java]
I am learning Java and told to learn Spring. I am writing a simple program and get this error message (I am using IntelliJ Idea IDE): My ApplicationContext.xml file is as follows. I copied and pasted the RunMario class file path from the project panel so it should be the fully qualified path. Here is the RunM…
Spring Boot Actuator without Spring Boot
I’ve been working on a Spring/Spring MVC application and I’m looking to add performance metrics. I’ve come across Spring Boot Actuator and it looks like a great solution. However my application is not a Spring Boot application. My application is running in a traditional container Tomcat 8. I…
How to exclude older versions of maven dependency and use new version of it?
I am working with Maven project and I have two projects, ProjectA and ProjectB. My ProjectA is a maven library whose pom looks like this: In my above pom, PartialKernel is bringing older version of various Spring Framework dependencies like spring-core, spring-web. It is bringing 3.2.8.RELEASE version and I w…
Change deferredResult HTTP status code on timeout
I am using deferredResult on Spring MVC, but using this code, the timeout still are sending back the HTTP code 503 to the client. Any idea what else to try? Answer I ran into the same issue. My Spring MVC Controller method originally returned DeferredResult<Object>, but then I realised I wanted to contr…
How to write an Aspect pointcut based on an annotated parameter
I’m having a bit of trouble working out how to create a pointcut that will operate on beans that have a specific annotated parameter. My eventual aim is to validate the value of the parameter before it’s processed, but for the moment I just need to create the pointcut. Consider the following annot…
Reading line breaks in CSV which are quoted in the file in FlatfileItemReader of spring batch
I am trying to parse a CSV file with FlatFileItemReader. This CSV contains some quoted newline characters as shown below. But this parsing is failing with required fields are 2 but actual is 1. What I am missing in my FlatFileReader configuration? Answer out of the box the FlatFileItemReader uses a SimpleReco…
Spring-boot thymeleaf load HTML file from classpath
I’ve a multi module project structure like : and on my controller: I’m getting the error message as below: Is there configuration needed to configure something specially for spring for searching templates on class path? Answer Adding following properties solves my problem: