👀 Views: 83 💬 Answers: 1 📅 Created: 2025-06-13

spring-mvc interceptors http-status Java

I'm prototyping a solution and I'm optimizing some code but I'm working on a project and hit a roadblock... I'm currently developing a Spring MVC application and working with an scenario with handling custom response statuses in my interceptors. I have an interceptor that checks for certain conditions and, if they are not met, it sets a different `HttpStatus` and returns a custom response entity. However, I notice that the response does not reflect the set `HttpStatus`, and instead defaults to 200 OK. Here's a snippet of my interceptor code: ```java import org.springframework.stereotype.Component; import org.springframework.web.servlet.HandlerInterceptor; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.concurrent.CompletableFuture; @Component public class CustomInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { if (someConditionFails()) { response.setStatus(HttpServletResponse.SC_BAD_REQUEST); response.getWriter().write("Custom behavior message"); return false; } return true; } private boolean someConditionFails() { // Your condition logic here return true; // Just for demonstration } } ``` I have registered this interceptor in my `WebMvcConfigurer` implementation: ```java import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @Configuration public class WebConfig implements WebMvcConfigurer { private final CustomInterceptor customInterceptor; public WebConfig(CustomInterceptor customInterceptor) { this.customInterceptor = customInterceptor; } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(customInterceptor); } } ``` Despite setting the status in the interceptor, the controller still returns 200 OK when conditions are not met. I have verified that the logic in `someConditionFails()` is being executed, but it seems like the response is being overridden later in the request processing pipeline. I have tried various combinations of setting the status, including using `ResponseEntity` in the controller directly, but I still encounter the same question. The application is running on Spring Boot 2.6 and I’m using Java 11. Any insights on why the HTTP status might not be properly set in this scenario? Am I missing something in the interceptor configuration or handling? I'm working on a API that needs to handle this. This is happening in both development and production on Ubuntu 20.04. Is there a simpler solution I'm overlooking? I'm on CentOS using the latest version of Java. Am I missing something obvious?