What methods can be used to intercept or capture HTTP requests?

In Java, the following methods are commonly used to intercept HTTP requests:

1. Servlet Filters

   • Allow intercepting requests and responses before they reach the servlet.
   • Used for logging, authentication, modifying requests/responses.

2. Interceptors in JAX-RS or Spring

   • In REST applications, Client or Server Interceptors can be used to handle requests and responses.

3. Aspect-Oriented Programming (AOP)

   • In Spring AOP, you can create aspects that intercept controller method calls.

4. HttpServletRequestWrapper

   • A wrapper around the request that allows modifying or analyzing the request content.

Example of using a filter:

@WebFilter("/*")
public class LoggingFilter implements Filter {
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        System.out.println("Request: " + req.getMethod() + " " + req.getRequestURI());
        chain.doFilter(request, response); // pass further
    }
}

Thus, filters and interceptors are the main ways to intercept HTTP requests in Java.