Spring Boot拦截器和监听器实现对请求和响应处理实战

import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RequestLoggingInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 记录请求的URL、HTTP方法和时间戳
        System.out.println("RequestLoggingInterceptor"+"启动了");
        System.out.println("Request URL: " + request.getRequestURL());
        System.out.println("HTTP Method: " + request.getMethod());
        System.out.println("Timestamp: " + System.currentTimeMillis());
        return true;
    }
}

import org.springframework.beans.factory.annotation.Autowired;
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 RequestLoggingInterceptor requestLoggingInterceptor;
    @Autowired
    public WebConfig(RequestLoggingInterceptor requestLoggingInterceptor) {
        this.requestLoggingInterceptor = requestLoggingInterceptor;
    }
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 注册拦截器
        registry.addInterceptor(requestLoggingInterceptor);
    }
}

import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;
import javax.servlet.annotation.WebListener;
import javax.servlet.http.HttpServletRequest;
@WebListener
public class RequestListener implements ServletRequestListener {
    @Override
    public void requestInitialized(ServletRequestEvent sre) {
        HttpServletRequest request = (HttpServletRequest) sre.getServletRequest();
        System.out.println("RequestListener"+"启动了");
        // 记录请求的URL、HTTP方法和时间戳
        System.out.println("Request URL: " + request.getRequestURL());
        System.out.println("HTTP Method: " + request.getMethod());
        System.out.println("Timestamp: " + System.currentTimeMillis());
    }
    @Override
    public void requestDestroyed(ServletRequestEvent sre) {
        // 请求处理完成后的操作
        System.out.println("Request processing completed.");
    }
}

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class UserController {
    @GetMapping("/user")
    public String getUser() {
        return "Get User";
    }
    @PostMapping("/user")
    public String saveUser(@RequestBody String user) {
        return "Save User: " + user;
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
@SpringBootApplication
@ServletComponentScan
public class HelloWorldApplication {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldApplication.class, args);
    }
}