一、在 Spring 配置中创建一个过滤器，将 HttpServletRequest 包装为 ContentCachingRequestWrapper

import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.util.ContentCachingRequestWrapper;
import java.io.IOException;@Component
public class xxxxFilter extends OncePerRequestFilter {@Overrideprotected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {ContentCachingRequestWrapper wrappedRequest = new ContentCachingRequestWrapper(request);filterChain.doFilter(wrappedRequest, response);}
}

二、添加注解

import java.lang.annotation.*;@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface MyAnotation {String XXXX() default "";
}

三、添加切面

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;public class MyAspect {@Around("logPointcut() && @annotation(logAnnotation)")public Object around(ProceedingJoinPoint joinPoint, MyAnotation  myAnotation ) throws Throwable {// 获取当前 HttpServletRequestHttpServletRequest request = getCurrentHttpRequest();if (request != null) {// 判断请求方法if ("GET".equalsIgnoreCase(request.getMethod())) {String paramName = request.getParameter("name");System.out.println("GET 请求参数 name: " + paramName);} else if ("POST".equalsIgnoreCase(request.getMethod())) {String body = getRequestBody(request);String paramName = getParamFromBody(body, "name");System.out.println("POST 请求 body 参数 name: " + paramName);}}return joinPoint.proceed();}// 获取当前 HttpServletRequestprivate HttpServletRequest getCurrentHttpRequest() {ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();return attributes != null ? attributes.getRequest() : null;}// 读取 POST 请求体内容private String getRequestBody(HttpServletRequest request) {StringBuilder body = new StringBuilder();try (BufferedReader reader = request.getReader()) {String line;while ((line = reader.readLine()) != null) {body.append(line);}} catch (IOException e) {e.printStackTrace();}return body.toString();}// 从 JSON 请求体中解析指定参数private String getParamFromBody(String body, String paramName) {JSONObject jsonObject = JSON.parseObject(body);return jsonObject.getString(paramName);}
}