How can i use multiple interceptors for specific request such as POST, Get and PUT? - spring

Question

I am using spring boot and cloud in the project. For logging, I am using Interceptors. Since I am new to interceptors I am having difficulty using multiple interceptors. Like can I use a specific interceptor for the specific task? For example, when I request a post, the POST interceptor is called, when I use GET the get interceptor is called. and how can I code for multiple interceptors too?
I never tried anything yet for that because I am not getting the logic

Answer 1

You can define all HTTP interceptors that you want, every interceptor should implement the logic of intercept an HTTP request.
#Slf4j
#Component
public class GetRequestInterceptor extends HandlerInterceptorAdapter {
#Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (request.getMethod().equals(HttpMethod.GET.name())) {
log.info("intercepting GET request {}", request.getRequestURI());
}
return true;
}
}
#Slf4j
#Component
public class PostRequestInterceptor extends HandlerInterceptorAdapter {
#Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (request.getMethod().equals(HttpMethod.POST.name())) {
log.info("intercepting POST request {}", request.getRequestURI());
}
return true;
}
}
And then you have to register them in spring.
#RequiredArgsConstructor
#Configuration
public class WebConfigurer implements WebMvcConfigurer {
private final GetRequestInterceptor getInterceptor;
private final PostRequestInterceptor postRequestInterceptor;
#Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(getInterceptor);
registry.addInterceptor(postRequestInterceptor);
}
}

Answer 2

#earandap
Your comment worked Thanks a lot.
Here is my code:
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
long startTime = System.currentTimeMillis();
request.setAttribute("startTime", startTime);
log.info("[START] [" + request.getMethod() + "] [ URL is: " + request.getRequestURL().toString()
+ " Body is: {}]");
return true;
}
#Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
long startTime = (long) request.getAttribute("startTime");
request.removeAttribute("startTime");
long endTime = System.currentTimeMillis();
log.info("[END] [" + request.getMethod() + "] [ URL is:" + request.getRequestURL().toString()
+ "] [Execution Time: {} miliseconds]", (endTime - startTime));
}