详解AOP与Filter拦截请求打印日志实用例子

相信各位同道在写代码的时候，肯定会写一些日志打印，因为这对往后的运维而言，至关重要的。

那么我们请求一个restfull接口的时候，哪些信息是应该被日志记录的呢？

以下做了一个基本的简单例子，这里只是示例说明基本常规实现记录的信息，根据项目的真实情况选用:

1 . Http请求拦截器(Filter) : 从HttpServletRequest获取基本的请求信息

import name.ealen.util.HttpUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


@Configuration
public class FilterConfiguration {

  private static final Logger log = LoggerFactory.getLogger(FilterConfig.class);

  @Bean
  @Order(Integer.MIN_VALUE)
  @Qualifier("filterRegistration")
  public FilterRegistrationBean filterRegistration() {
    FilterRegistrationBean registration = new FilterRegistrationBean<>();
    registration.setFilter(controllerFilter());
    registration.addUrlPatterns("
@Aspect
@Component
public class ControllerInterceptor {

  private static final Logger log = LoggerFactory.getLogger(ControllerInterceptor.class);
  @Resource
  private Environment environment;

  @Around(value = "execution (* name.ealen.web.*.*(..))")
  public Object processApiFacade(ProceedingJoinPoint pjp) {
    String appName;
    try {
      appName = environment.getProperty("spring.application.name").toUpperCase();
    } catch (Exception e) {
      appName = "UNNAMED";
    }
    long startTime = System.currentTimeMillis();
    String name = pjp.getTarget().getClass().getSimpleName();
    String method = pjp.getSignature().getName();
    Object result = null;
    HttpStatus status = null;
    try {
      result = pjp.proceed();
      log.info("RequestTarget : " + appName + "." + name + "." + method);
      log.info("RequestParam : " + JSON.toJSON(pjp.getArgs()));
      if (result instanceof ResponseEntity) {
 status = ((ResponseEntity) result).getStatusCode();
      } else {
 status = HttpStatus.OK;
      }
    } catch (Throwable throwable) {
      status = HttpStatus.INTERNAL_SERVER_ERROR;
      result = new ResponseEntity<>("{"Internal Server Error" : "" + throwable.getMessage() + ""}", status);
      throwable.printStackTrace();
    } finally {
      log.info("ResponseEntity : {" + ""HttpStatus":"" + status.toString() + """ + ","ResponseBody": " + JSON.toJSON(result) + "}");
      log.info("Internal Method Cost Time: {}ms", System.currentTimeMillis() - startTime);
    }
    return result;
  }
}

3 . 提供一个简单的restfull接口 :

package name.ealen.web;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class SayHelloController {

  @RequestMapping("/sayHello")
  public String sayHello() {
    return "hello world";
  }

  @RequestMapping("/say")
  public ResponseEntity say(@RequestBody Object o) {
    return new ResponseEntity<>(o, HttpStatus.OK);
  }

}

4 . 使用Postman进行基本测试 :

5 . 控制台可以看到基本效果 :

以上只是关于Controller应该记录日志的一个简单的例子，完整代码可见 https://github.com/EalenXie/springboot-controller-logger

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。