Introduction You have integrated spring security in you project. Using keycloak as authentication and authorization server. Backend as resource server guarded by jwks-keys After every successful authentication you get all user details inside Controller but it is still pointing to Authentication or Jwt Object from …

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Introduction While developing spring-boot apps I have faced challenge of handling exception from service methods. Any exception that are propogated from the Controllers are handled by @ControllerAdvice. AFAIK there is nothing called as @ServiceAdvice to handle any exception being thrown from service layer. Spring tool …

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Complatable Future with RestTemplate In the previous article we learned how to use RestTemplate to call apis in sequence and compose their result and write to the client. We will try to optimize this now by makeing these 2 request work in parallel and return this response. We will same UserProfileSupplier & …

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Use case RestTemplate is a synchronous web-client to perform http/s requests from spring applications. Configuration We first define the bean to be injected in our services using following config: 1@Configuration 2public class Config { 3 4 @Bean 5 public RestTemplate restTemplate() { 6 return new RestTemplate(); 7 } 8 …

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Logging ndjson to a file We will configure spring-boot application to redirect logs to a file in ndjson format. See more information on ndjson Dependencies Add following dependencies to the pom.xml 1 <dependency> 2 <groupId>ch.qos.logback.contrib</groupId> 3 <artifactId>logback-json-classic</artifactId> 4 …

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